diff --git a/client/balance.go b/client/balance.go
index 3fd4ae8..5fe34e5 100644
--- a/client/balance.go
+++ b/client/balance.go
@@ -18,7 +18,7 @@ var expiryDetailsFlag = cli.BoolFlag{
 
 var balanceCommand = cli.Command{
 	Name:   "balance",
-	Usage:  "Print balance of the Ark wallet",
+	Usage:  "Shows the onchain and offchain balance of the Ark wallet",
 	Action: balanceAction,
 	Flags:  []cli.Flag{&expiryDetailsFlag},
 }
diff --git a/client/common.go b/client/common.go
index 2e4dc58..2339003 100644
--- a/client/common.go
+++ b/client/common.go
@@ -15,6 +15,7 @@ import (
 	arkv1 "github.com/ark-network/ark/api-spec/protobuf/gen/ark/v1"
 	"github.com/ark-network/ark/common"
 	"github.com/ark-network/ark/common/tree"
+	"github.com/btcsuite/btcd/btcec/v2/schnorr"
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/decred/dcrd/dcrec/secp256k1/v4"
 	"github.com/urfave/cli/v2"
@@ -596,7 +597,7 @@ func handleRoundStream(
 						if len(output.Script) == 0 {
 							continue
 						}
-						if bytes.Equal(output.Script[2:], outputTapKey.SerializeCompressed()) {
+						if bytes.Equal(output.Script[2:], schnorr.SerializePubKey(outputTapKey)) {
 							if output.Value != receiver.Amount {
 								continue
 							}
@@ -733,6 +734,29 @@ func toCongestionTree(treeFromProto *arkv1.Tree) (tree.CongestionTree, error) {
 	return levels, nil
 }
 
+// castCongestionTree converts a tree.CongestionTree to a repeated arkv1.TreeLevel
+func castCongestionTree(congestionTree tree.CongestionTree) *arkv1.Tree {
+	levels := make([]*arkv1.TreeLevel, 0, len(congestionTree))
+	for _, level := range congestionTree {
+		levelProto := &arkv1.TreeLevel{
+			Nodes: make([]*arkv1.Node, 0, len(level)),
+		}
+
+		for _, node := range level {
+			levelProto.Nodes = append(levelProto.Nodes, &arkv1.Node{
+				Txid:       node.Txid,
+				Tx:         node.Tx,
+				ParentTxid: node.ParentTxid,
+			})
+		}
+
+		levels = append(levels, levelProto)
+	}
+	return &arkv1.Tree{
+		Levels: levels,
+	}
+}
+
 func decodeReceiverAddress(addr string) (
 	isOnChainAddress bool,
 	onchainScript []byte,
diff --git a/client/config.go b/client/config.go
index 9b48d7c..15d00b6 100644
--- a/client/config.go
+++ b/client/config.go
@@ -6,7 +6,7 @@ import (
 
 var configCommand = cli.Command{
 	Name:   "config",
-	Usage:  "Print local configuration of the Ark CLI",
+	Usage:  "Shows configuration of the Ark wallet",
 	Action: printConfigAction,
 }
 
diff --git a/client/dump.go b/client/dump.go
index 862b0f4..985a1ac 100644
--- a/client/dump.go
+++ b/client/dump.go
@@ -8,12 +8,12 @@ import (
 
 var dumpCommand = cli.Command{
 	Name:   "dump-privkey",
-	Usage:  "Dump private key of the Ark wallet",
+	Usage:  "Dumps private key of the Ark wallet",
 	Action: dumpAction,
 }
 
 func dumpAction(ctx *cli.Context) error {
-  privateKey, err := privateKeyFromPassword()
+	privateKey, err := privateKeyFromPassword()
 	if err != nil {
 		return err
 	}
diff --git a/client/faucet.go b/client/faucet.go
deleted file mode 100644
index 2e3ff0a..0000000
--- a/client/faucet.go
+++ /dev/null
@@ -1,71 +0,0 @@
-package main
-
-import (
-	"context"
-	"fmt"
-	"io"
-
-	arkv1 "github.com/ark-network/ark/api-spec/protobuf/gen/ark/v1"
-	"github.com/urfave/cli/v2"
-)
-
-var faucetCommand = cli.Command{
-	Name:   "faucet",
-	Usage:  "Faucet your wallet",
-	Action: faucetAction,
-}
-
-func faucetAction(ctx *cli.Context) error {
-	addr, _, err := getAddress()
-	if err != nil {
-		return err
-	}
-
-	client, close, err := getClientFromState(ctx)
-	if err != nil {
-		return err
-	}
-	defer close()
-
-	_, err = client.Faucet(ctx.Context, &arkv1.FaucetRequest{
-		Address: addr,
-	})
-	if err != nil {
-		return err
-	}
-
-	eventStream, err := client.GetEventStream(ctx.Context, &arkv1.GetEventStreamRequest{})
-	if err != nil {
-		return err
-	}
-
-	for {
-		event, err := eventStream.Recv()
-		if err == io.EOF {
-			break
-		}
-		if err != nil {
-			return err
-		}
-
-		if event.GetRoundFinalization() != nil {
-			if _, err := client.FinalizePayment(context.Background(), &arkv1.FinalizePaymentRequest{
-				SignedForfeitTxs: event.GetRoundFinalization().GetForfeitTxs(),
-			}); err != nil {
-				return err
-			}
-		}
-
-		if event.GetRoundFailed() != nil {
-			return fmt.Errorf("faucet failed: %s", event.GetRoundFailed().GetReason())
-		}
-
-		if event.GetRoundFinalized() != nil {
-			return printJSON(map[string]interface{}{
-				"pool_txid": event.GetRoundFinalized().GetPoolTxid(),
-			})
-		}
-	}
-
-	return nil
-}
diff --git a/client/init.go b/client/init.go
index 50b1209..d31108c 100644
--- a/client/init.go
+++ b/client/init.go
@@ -36,7 +36,7 @@ var (
 
 var initCommand = cli.Command{
 	Name:   "init",
-	Usage:  "initialize the wallet with an encryption password, and connect it to an ASP",
+	Usage:  "Initialize your Ark wallet with an encryption password, and connect it to an ASP",
 	Action: initAction,
 	Flags:  []cli.Flag{&passwordFlag, &privateKeyFlag, &networkFlag, &urlFlag},
 }
diff --git a/client/main.go b/client/main.go
index 01c98b7..c33ab00 100644
--- a/client/main.go
+++ b/client/main.go
@@ -57,17 +57,17 @@ func main() {
 
 	app.Version = version
 	app.Name = "Ark CLI"
-	app.Usage = "command line interface for Ark wallet"
+	app.Usage = "ark wallet command line interface"
 	app.Commands = append(
 		app.Commands,
 		&balanceCommand,
 		&configCommand,
 		&dumpCommand,
-		&faucetCommand,
 		&initCommand,
 		&receiveCommand,
 		&redeemCommand,
 		&sendCommand,
+		&onboardCommand,
 	)
 
 	app.Before = func(ctx *cli.Context) error {
diff --git a/client/onboard.go b/client/onboard.go
new file mode 100644
index 0000000..398a528
--- /dev/null
+++ b/client/onboard.go
@@ -0,0 +1,147 @@
+package main
+
+import (
+	"encoding/hex"
+	"fmt"
+	"time"
+
+	arkv1 "github.com/ark-network/ark/api-spec/protobuf/gen/ark/v1"
+	"github.com/ark-network/ark/common/tree"
+	"github.com/urfave/cli/v2"
+	"github.com/vulpemventures/go-elements/payment"
+	"github.com/vulpemventures/go-elements/psetv2"
+)
+
+const (
+	minRelayFee = 30
+)
+
+var (
+	amountOnboardFlag = cli.Uint64Flag{
+		Name:     "amount",
+		Usage:    "amount to onboard in sats",
+		Required: true,
+	}
+)
+
+var onboardCommand = cli.Command{
+	Name:   "onboard",
+	Usage:  "Onboard the Ark by lifting your funds",
+	Action: onboardAction,
+	Flags:  []cli.Flag{&amountOnboardFlag},
+}
+
+func onboardAction(ctx *cli.Context) error {
+	amount := ctx.Uint64("amount")
+
+	if amount <= 0 {
+		return fmt.Errorf("missing amount flag (--amount)")
+	}
+
+	_, net := getNetwork()
+
+	aspPubkey, err := getServiceProviderPublicKey()
+	if err != nil {
+		return err
+	}
+
+	lifetime, err := getLifetime()
+	if err != nil {
+		return err
+	}
+
+	exitDelay, err := getExitDelay()
+	if err != nil {
+		return err
+	}
+
+	userPubKey, err := getWalletPublicKey()
+	if err != nil {
+		return err
+	}
+
+	congestionTreeLeaf := tree.Receiver{
+		Pubkey: hex.EncodeToString(userPubKey.SerializeCompressed()),
+		Amount: amount,
+	}
+
+	treeFactoryFn, sharedOutputScript, sharedOutputAmount, err := tree.CraftCongestionTree(
+		net.AssetID, aspPubkey, []tree.Receiver{congestionTreeLeaf}, minRelayFee, lifetime, exitDelay,
+	)
+	if err != nil {
+		return err
+	}
+
+	pay, err := payment.FromScript(sharedOutputScript, net, nil)
+	if err != nil {
+		return err
+	}
+
+	address, err := pay.TaprootAddress()
+	if err != nil {
+		return err
+	}
+
+	onchainReceiver := receiver{
+		To:     address,
+		Amount: sharedOutputAmount,
+	}
+
+	pset, err := sendOnchain(ctx, []receiver{onchainReceiver})
+	if err != nil {
+		return err
+	}
+
+	txid, err := broadcastPset(pset)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println("onboard txid:", txid)
+	fmt.Println("waiting for confirmation... (this may take a while, do not cancel the process)")
+
+	// wait for the transaction to be confirmed
+	if err := waitForTxConfirmation(ctx, txid); err != nil {
+		return err
+	}
+
+	fmt.Println("transaction confirmed")
+
+	congestionTree, err := treeFactoryFn(psetv2.InputArgs{
+		Txid:    txid,
+		TxIndex: 0,
+	})
+
+	if err != nil {
+		return err
+	}
+
+	client, close, err := getClientFromState(ctx)
+	if err != nil {
+		return err
+	}
+	defer close()
+
+	_, err = client.Onboard(ctx.Context, &arkv1.OnboardRequest{
+		BoardingTx:     pset,
+		CongestionTree: castCongestionTree(congestionTree),
+		UserPubkey:     hex.EncodeToString(userPubKey.SerializeCompressed()),
+	})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func waitForTxConfirmation(ctx *cli.Context, txid string) error {
+	isConfirmed := false
+
+	for !isConfirmed {
+		time.Sleep(5 * time.Second)
+
+		isConfirmed, _, _ = getTxBlocktime(txid)
+	}
+
+	return nil
+}
diff --git a/client/receive.go b/client/receive.go
index 0e6a30b..25db261 100644
--- a/client/receive.go
+++ b/client/receive.go
@@ -6,7 +6,7 @@ import (
 
 var receiveCommand = cli.Command{
 	Name:   "receive",
-	Usage:  "Print the Ark address associated with your wallet and the connected Ark",
+	Usage:  "Shows both onchain and offchain addresses",
 	Action: receiveAction,
 }
 
diff --git a/client/redeem.go b/client/redeem.go
index 241610b..b605193 100644
--- a/client/redeem.go
+++ b/client/redeem.go
@@ -38,7 +38,7 @@ var (
 
 var redeemCommand = cli.Command{
 	Name:   "redeem",
-	Usage:  "Redeem VTXO(s) to onchain",
+	Usage:  "Redeem your offchain funds, either collaboratively or unilaterally",
 	Flags:  []cli.Flag{&addressFlag, &amountToRedeemFlag, &forceFlag},
 	Action: redeemAction,
 }
diff --git a/client/send.go b/client/send.go
index c90369c..f47250c 100644
--- a/client/send.go
+++ b/client/send.go
@@ -40,7 +40,7 @@ var (
 
 var sendCommand = cli.Command{
 	Name:   "send",
-	Usage:  "Send VTXOs to a list of addresses",
+	Usage:  "Send your onchain or offchain funds to one or many receivers",
 	Action: sendAction,
 	Flags:  []cli.Flag{&receiversFlag, &toFlag, &amountFlag},
 }
@@ -83,9 +83,19 @@ func sendAction(ctx *cli.Context) error {
 	}
 
 	if len(onchainReceivers) > 0 {
-		if err := sendOnchain(ctx, onchainReceivers); err != nil {
+		pset, err := sendOnchain(ctx, onchainReceivers)
+		if err != nil {
 			return err
 		}
+
+		txid, err := broadcastPset(pset)
+		if err != nil {
+			return err
+		}
+
+		return printJSON(map[string]interface{}{
+			"txid": txid,
+		})
 	}
 
 	if len(offchainReceivers) > 0 {
@@ -203,14 +213,14 @@ func sendOffchain(ctx *cli.Context, receivers []receiver) error {
 	})
 }
 
-func sendOnchain(ctx *cli.Context, receivers []receiver) error {
+func sendOnchain(ctx *cli.Context, receivers []receiver) (string, error) {
 	pset, err := psetv2.New(nil, nil, nil)
 	if err != nil {
-		return err
+		return "", err
 	}
 	updater, err := psetv2.NewUpdater(pset)
 	if err != nil {
-		return err
+		return "", err
 	}
 
 	_, net := getNetwork()
@@ -219,12 +229,12 @@ func sendOnchain(ctx *cli.Context, receivers []receiver) error {
 	for _, receiver := range receivers {
 		targetAmount += receiver.Amount
 		if receiver.Amount < DUST {
-			return fmt.Errorf("invalid amount (%d), must be greater than dust %d", receiver.Amount, DUST)
+			return "", fmt.Errorf("invalid amount (%d), must be greater than dust %d", receiver.Amount, DUST)
 		}
 
 		script, err := address.ToOutputScript(receiver.To)
 		if err != nil {
-			return err
+			return "", err
 		}
 
 		if err := updater.AddOutputs([]psetv2.OutputArgs{
@@ -234,28 +244,28 @@ func sendOnchain(ctx *cli.Context, receivers []receiver) error {
 				Script: script,
 			},
 		}); err != nil {
-			return err
+			return "", err
 		}
 	}
 
 	selected, delayedSelected, change, err := coinSelectOnchain(targetAmount, nil)
 	if err != nil {
-		return err
+		return "", err
 	}
 
 	if err := addInputs(updater, selected, delayedSelected, net); err != nil {
-		return err
+		return "", err
 	}
 
 	if change > 0 {
 		_, changeAddr, err := getAddress()
 		if err != nil {
-			return err
+			return "", err
 		}
 
 		changeScript, err := address.ToOutputScript(changeAddr)
 		if err != nil {
-			return err
+			return "", err
 		}
 
 		if err := updater.AddOutputs([]psetv2.OutputArgs{
@@ -265,13 +275,13 @@ func sendOnchain(ctx *cli.Context, receivers []receiver) error {
 				Script: changeScript,
 			},
 		}); err != nil {
-			return err
+			return "", err
 		}
 	}
 
-	utx, err := updater.Pset.UnsignedTx()
+	utx, err := pset.UnsignedTx()
 	if err != nil {
-		return err
+		return "", err
 	}
 
 	vBytes := utx.VirtualSize()
@@ -291,22 +301,22 @@ func sendOnchain(ctx *cli.Context, receivers []receiver) error {
 			append(selected, delayedSelected...),
 		)
 		if err != nil {
-			return err
+			return "", err
 		}
 
 		if err := addInputs(updater, selected, delayedSelected, net); err != nil {
-			return err
+			return "", err
 		}
 
 		if newChange > 0 {
 			_, changeAddr, err := getAddress()
 			if err != nil {
-				return err
+				return "", err
 			}
 
 			changeScript, err := address.ToOutputScript(changeAddr)
 			if err != nil {
-				return err
+				return "", err
 			}
 
 			if err := updater.AddOutputs([]psetv2.OutputArgs{
@@ -316,7 +326,7 @@ func sendOnchain(ctx *cli.Context, receivers []receiver) error {
 					Script: changeScript,
 				},
 			}); err != nil {
-				return err
+				return "", err
 			}
 		}
 	}
@@ -327,40 +337,42 @@ func sendOnchain(ctx *cli.Context, receivers []receiver) error {
 			Amount: feeAmount,
 		},
 	}); err != nil {
-		return err
+		return "", err
 	}
 
 	prvKey, err := privateKeyFromPassword()
 	if err != nil {
-		return err
+		return "", err
 	}
 
 	explorer := NewExplorer()
 
 	if err := signPset(updater.Pset, explorer, prvKey); err != nil {
-		return err
+		return "", err
 	}
 
 	if err := psetv2.FinalizeAll(updater.Pset); err != nil {
-		return err
+		return "", err
+	}
+
+	return updater.Pset.ToBase64()
+}
+
+func broadcastPset(psetB64 string) (string, error) {
+	pset, err := psetv2.NewPsetFromBase64(psetB64)
+	if err != nil {
+		return "", err
 	}
 
 	extracted, err := psetv2.Extract(pset)
 	if err != nil {
-		return err
+		return "", err
 	}
 
 	hex, err := extracted.ToHex()
 	if err != nil {
-		return err
+		return "", err
 	}
 
-	txid, err := explorer.Broadcast(hex)
-	if err != nil {
-		return err
-	}
-
-	return printJSON(map[string]interface{}{
-		"txid": txid,
-	})
+	return NewExplorer().Broadcast(hex)
 }
diff --git a/server/internal/infrastructure/tx-builder/covenant/tree.go b/common/tree/builder.go
similarity index 81%
rename from server/internal/infrastructure/tx-builder/covenant/tree.go
rename to common/tree/builder.go
index 98cd45c..464a8f1 100644
--- a/server/internal/infrastructure/tx-builder/covenant/tree.go
+++ b/common/tree/builder.go
@@ -1,22 +1,49 @@
-package txbuilder
+package tree
 
 import (
 	"encoding/hex"
 	"fmt"
 
-	"github.com/ark-network/ark/common/tree"
-	"github.com/ark-network/ark/internal/core/domain"
+	"github.com/btcsuite/btcd/btcec/v2/schnorr"
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/txscript"
 	"github.com/decred/dcrd/dcrec/secp256k1/v4"
 	"github.com/vulpemventures/go-elements/psetv2"
 	"github.com/vulpemventures/go-elements/taproot"
 )
 
-type treeFactory func(outpoint psetv2.InputArgs) (tree.CongestionTree, error)
+func CraftCongestionTree(
+	asset string, aspPublicKey *secp256k1.PublicKey,
+	receivers []Receiver, feeSatsPerNode uint64, roundLifetime int64, exitDelay int64,
+) (
+	buildCongestionTree TreeFactory,
+	sharedOutputScript []byte, sharedOutputAmount uint64, err error,
+) {
+	root, err := createPartialCongestionTree(
+		receivers, aspPublicKey, asset, feeSatsPerNode, roundLifetime, exitDelay,
+	)
+	if err != nil {
+		return
+	}
+
+	taprootKey, _, err := root.getWitnessData()
+	if err != nil {
+		return
+	}
+
+	sharedOutputScript, err = taprootOutputScript(taprootKey)
+	if err != nil {
+		return
+	}
+	sharedOutputAmount = root.getAmount() + root.feeSats
+	buildCongestionTree = root.createFinalCongestionTree()
+
+	return
+}
 
 type node struct {
 	sweepKey      *secp256k1.PublicKey
-	receivers     []domain.Receiver
+	receivers     []Receiver
 	left          *node
 	right         *node
 	asset         string
@@ -131,7 +158,7 @@ func (n *node) getWitnessData() (
 		return n._inputTaprootKey, n._inputTaprootTree, nil
 	}
 
-	sweepClosure := &tree.CSVSigClosure{
+	sweepClosure := &CSVSigClosure{
 		Pubkey:  n.sweepKey,
 		Seconds: uint(n.roundLifetime),
 	}
@@ -147,7 +174,7 @@ func (n *node) getWitnessData() (
 			return nil, nil, err
 		}
 
-		unrollClosure := &tree.UnrollClosure{
+		unrollClosure := &UnrollClosure{
 			LeftKey:    taprootKey,
 			LeftAmount: n.getAmount(),
 		}
@@ -163,7 +190,7 @@ func (n *node) getWitnessData() (
 		root := branchTaprootTree.RootNode.TapHash()
 
 		inputTapkey := taproot.ComputeTaprootOutputKey(
-			tree.UnspendableKey(),
+			UnspendableKey(),
 			root[:],
 		)
 
@@ -186,7 +213,7 @@ func (n *node) getWitnessData() (
 	leftAmount := n.left.getAmount() + n.feeSats
 	rightAmount := n.right.getAmount() + n.feeSats
 
-	unrollClosure := &tree.UnrollClosure{
+	unrollClosure := &UnrollClosure{
 		LeftKey:     leftKey,
 		LeftAmount:  leftAmount,
 		RightKey:    rightKey,
@@ -204,7 +231,7 @@ func (n *node) getWitnessData() (
 	root := branchTaprootTree.RootNode.TapHash()
 
 	taprootKey := taproot.ComputeTaprootOutputKey(
-		tree.UnspendableKey(),
+		UnspendableKey(),
 		root[:],
 	)
 
@@ -231,7 +258,7 @@ func (n *node) getVtxoWitnessData() (
 		return nil, nil, err
 	}
 
-	redeemClosure := &tree.CSVSigClosure{
+	redeemClosure := &CSVSigClosure{
 		Pubkey:  pubkey,
 		Seconds: uint(n.exitDelay),
 	}
@@ -241,7 +268,7 @@ func (n *node) getVtxoWitnessData() (
 		return nil, nil, err
 	}
 
-	forfeitClosure := &tree.ForfeitClosure{
+	forfeitClosure := &ForfeitClosure{
 		Pubkey:    pubkey,
 		AspPubkey: n.sweepKey,
 	}
@@ -257,7 +284,7 @@ func (n *node) getVtxoWitnessData() (
 	root := leafTaprootTree.RootNode.TapHash()
 
 	taprootKey := taproot.ComputeTaprootOutputKey(
-		tree.UnspendableKey(),
+		UnspendableKey(),
 		root[:],
 	)
 
@@ -266,25 +293,24 @@ func (n *node) getVtxoWitnessData() (
 
 func (n *node) getTreeNode(
 	input psetv2.InputArgs, tapTree *taproot.IndexedElementsTapScriptTree,
-) (tree.Node, error) {
+) (Node, error) {
 	pset, err := n.getTx(input, tapTree)
 	if err != nil {
-		return tree.Node{}, err
+		return Node{}, err
 	}
 
 	txid, err := getPsetId(pset)
 	if err != nil {
-		return tree.Node{}, err
+		return Node{}, err
 	}
 
 	tx, err := pset.ToBase64()
 	if err != nil {
-		return tree.Node{}, err
+		return Node{}, err
 	}
-
 	parentTxid := chainhash.Hash(pset.Inputs[0].PreviousTxid).String()
 
-	return tree.Node{
+	return Node{
 		Txid:       txid,
 		Tx:         tx,
 		ParentTxid: parentTxid,
@@ -306,7 +332,7 @@ func (n *node) getTx(
 	}
 
 	if err := addTaprootInput(
-		updater, input, tree.UnspendableKey(), inputTapTree,
+		updater, input, UnspendableKey(), inputTapTree,
 	); err != nil {
 		return nil, err
 	}
@@ -328,9 +354,9 @@ func (n *node) getTx(
 	return pset, nil
 }
 
-func (n *node) createFinalCongestionTree() treeFactory {
-	return func(poolTxInput psetv2.InputArgs) (tree.CongestionTree, error) {
-		congestionTree := make(tree.CongestionTree, 0)
+func (n *node) createFinalCongestionTree() TreeFactory {
+	return func(poolTxInput psetv2.InputArgs) (CongestionTree, error) {
+		congestionTree := make(CongestionTree, 0)
 
 		_, taprootTree, err := n.getWitnessData()
 		if err != nil {
@@ -346,7 +372,7 @@ func (n *node) createFinalCongestionTree() treeFactory {
 			nextInputsArgs := make([]psetv2.InputArgs, 0)
 			nextTaprootTrees := make([]*taproot.IndexedElementsTapScriptTree, 0)
 
-			treeLevel := make([]tree.Node, 0)
+			treeLevel := make([]Node, 0)
 
 			for i, node := range nodes {
 				treeNode, err := node.getTreeNode(ins[i], inTrees[i])
@@ -385,38 +411,8 @@ func (n *node) createFinalCongestionTree() treeFactory {
 	}
 }
 
-func craftCongestionTree(
-	asset string, aspPublicKey *secp256k1.PublicKey,
-	payments []domain.Payment, feeSatsPerNode uint64, roundLifetime int64, exitDelay int64,
-) (
-	buildCongestionTree treeFactory,
-	sharedOutputScript []byte, sharedOutputAmount uint64, err error,
-) {
-	receivers := getOffchainReceivers(payments)
-	root, err := createPartialCongestionTree(
-		receivers, aspPublicKey, asset, feeSatsPerNode, roundLifetime, exitDelay,
-	)
-	if err != nil {
-		return
-	}
-
-	taprootKey, _, err := root.getWitnessData()
-	if err != nil {
-		return
-	}
-
-	sharedOutputScript, err = taprootOutputScript(taprootKey)
-	if err != nil {
-		return
-	}
-	sharedOutputAmount = root.getAmount() + root.feeSats
-	buildCongestionTree = root.createFinalCongestionTree()
-
-	return
-}
-
 func createPartialCongestionTree(
-	receivers []domain.Receiver,
+	receivers []Receiver,
 	aspPublicKey *secp256k1.PublicKey,
 	asset string,
 	feeSatsPerNode uint64,
@@ -431,7 +427,7 @@ func createPartialCongestionTree(
 	for _, r := range receivers {
 		leafNode := &node{
 			sweepKey:      aspPublicKey,
-			receivers:     []domain.Receiver{r},
+			receivers:     []Receiver{r},
 			asset:         asset,
 			feeSats:       feeSatsPerNode,
 			roundLifetime: roundLifetime,
@@ -478,3 +474,45 @@ func createUpperLevel(nodes []*node) ([]*node, error) {
 	}
 	return pairs, nil
 }
+
+func taprootOutputScript(taprootKey *secp256k1.PublicKey) ([]byte, error) {
+	return txscript.NewScriptBuilder().AddOp(txscript.OP_1).AddData(schnorr.SerializePubKey(taprootKey)).Script()
+}
+
+func getPsetId(pset *psetv2.Pset) (string, error) {
+	utx, err := pset.UnsignedTx()
+	if err != nil {
+		return "", err
+	}
+
+	return utx.TxHash().String(), nil
+}
+
+// wrapper of updater methods adding a taproot input to the pset with all the necessary data to spend it via any taproot script
+func addTaprootInput(
+	updater *psetv2.Updater,
+	input psetv2.InputArgs,
+	internalTaprootKey *secp256k1.PublicKey,
+	taprootTree *taproot.IndexedElementsTapScriptTree,
+) error {
+	if err := updater.AddInputs([]psetv2.InputArgs{input}); err != nil {
+		return err
+	}
+
+	if err := updater.AddInTapInternalKey(0, schnorr.SerializePubKey(internalTaprootKey)); err != nil {
+		return err
+	}
+
+	for _, proof := range taprootTree.LeafMerkleProofs {
+		controlBlock := proof.ToControlBlock(internalTaprootKey)
+
+		if err := updater.AddInTapLeafScript(0, psetv2.TapLeafScript{
+			TapElementsLeaf: taproot.NewBaseTapElementsLeaf(proof.Script),
+			ControlBlock:    controlBlock,
+		}); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
diff --git a/common/tree/type.go b/common/tree/type.go
new file mode 100644
index 0000000..239b2fa
--- /dev/null
+++ b/common/tree/type.go
@@ -0,0 +1,10 @@
+package tree
+
+import "github.com/vulpemventures/go-elements/psetv2"
+
+type TreeFactory func(outpoint psetv2.InputArgs) (CongestionTree, error)
+
+type Receiver struct {
+	Pubkey string
+	Amount uint64
+}
diff --git a/common/tree/validation.go b/common/tree/validation.go
index 4c08a8e..f56f0dd 100644
--- a/common/tree/validation.go
+++ b/common/tree/validation.go
@@ -236,7 +236,7 @@ func validateNodeTransaction(
 
 			switch c := close.(type) {
 			case *CSVSigClosure:
-				isASP := c.Pubkey.IsEqual(expectedPublicKeyASP)
+				isASP := bytes.Equal(schnorr.SerializePubKey(c.Pubkey), schnorr.SerializePubKey(expectedPublicKeyASP))
 				isSweepDelay := int64(c.Seconds) == expectedSequenceSeconds
 
 				if isASP && !isSweepDelay {
diff --git a/server/README.md b/server/README.md
index c760fd3..00c4721 100755
--- a/server/README.md
+++ b/server/README.md
@@ -71,24 +71,36 @@ This will add a `state.json` file to the following directory:
 **Note:** you can use a different datadir by exporting the env var `ARK_WALLET_DATADIR` like:
 
 ```bash
-$ export ARK_WALLET_DATADIR=path/to/custom 
+$ export ARK_WALLET_DATADIR=path/to/custom
 $ ark init --password <password> --ark-url localhost:6000
+```
 
 Add funds to the ark wallet:
 
 ```
-$ ark faucet
-# ark now has 10000 sats on its offchain balance
+$ ark receive
+{
+	"offchain_address": <address starting with "tark1q...">,
+	"onchain_address": <address starting with "tex1q...">
+}
 ```
 
+Fund the `onchain_address` with https://liquidtestnet.com/faucet.
+
+Onboard the ark:
+
+```
+$ ark onboard --amount 21000
+```
+
+After confirmation, ark wallet will be funded and ready to spend offchain.
+
 In **another tab**, setup another ark wallet with:
 
 ```
 $ export ARK_WALLET_DATADIR=./datadir
 $ alias ark2=$(pwd)/build/ark-cli-<os>-<arch>
 $ ark2 init --password <password> --ark-url localhost:6000
-$ ark2 faucet
-# ark2 now has 10000 sats on ark
 ```
 
 **Note:** `ark2` should always run in the second tab.
@@ -98,7 +110,7 @@ $ ark2 faucet
 You can now make ark payments between the 2 ark wallets:
 
 ```
-$ ark receive
+$ ark2 receive
 {
 	"offchain_address": <address starting with "tark1q...">,
 	"onchain_address": <address starting with "tex1q...">,
@@ -109,7 +121,7 @@ $ ark receive
 ```
 
 ```
-$ ark2 send --to <offchain_address> --amount 2100
+$ ark send --to <ark2 offchain address> --amount 2100
 ```
 
 Both balances should reflect the payment:
@@ -117,15 +129,15 @@ Both balances should reflect the payment:
 ```
 $ ark balance
 {
-	"offchain_balance": 12100,
-	"onchain_balance": 0
+	"offchain_balance": 18900,
+	"onchain_balance": 78872
 }
 ```
 
 ```
 $ ark2 balance
 {
-	"offchain_balance": 7900,
+	"offchain_balance": 2100,
 	"onchain_balance": 0
 }
 ```
diff --git a/server/api-spec/openapi/swagger/ark/v1/service.swagger.json b/server/api-spec/openapi/swagger/ark/v1/service.swagger.json
index 111f586..72cec64 100644
--- a/server/api-spec/openapi/swagger/ark/v1/service.swagger.json
+++ b/server/api-spec/openapi/swagger/ark/v1/service.swagger.json
@@ -47,36 +47,6 @@
         ]
       }
     },
-    "/v1/faucet/{address}": {
-      "post": {
-        "operationId": "ArkService_Faucet",
-        "responses": {
-          "200": {
-            "description": "A successful response.",
-            "schema": {
-              "$ref": "#/definitions/v1FaucetResponse"
-            }
-          },
-          "default": {
-            "description": "An unexpected error response.",
-            "schema": {
-              "$ref": "#/definitions/rpcStatus"
-            }
-          }
-        },
-        "parameters": [
-          {
-            "name": "address",
-            "in": "path",
-            "required": true,
-            "type": "string"
-          }
-        ],
-        "tags": [
-          "ArkService"
-        ]
-      }
-    },
     "/v1/info": {
       "get": {
         "operationId": "ArkService_GetInfo",
@@ -99,6 +69,38 @@
         ]
       }
     },
+    "/v1/onboard": {
+      "post": {
+        "operationId": "ArkService_Onboard",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/v1OnboardResponse"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/rpcStatus"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "body",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/v1OnboardRequest"
+            }
+          }
+        ],
+        "tags": [
+          "ArkService"
+        ]
+      }
+    },
     "/v1/payment/claim": {
       "post": {
         "operationId": "ArkService_ClaimPayment",
@@ -335,9 +337,6 @@
     "v1ClaimPaymentResponse": {
       "type": "object"
     },
-    "v1FaucetResponse": {
-      "type": "object"
-    },
     "v1FinalizePaymentRequest": {
       "type": "object",
       "properties": {
@@ -429,6 +428,23 @@
         }
       }
     },
+    "v1OnboardRequest": {
+      "type": "object",
+      "properties": {
+        "boardingTx": {
+          "type": "string"
+        },
+        "congestionTree": {
+          "$ref": "#/definitions/v1Tree"
+        },
+        "userPubkey": {
+          "type": "string"
+        }
+      }
+    },
+    "v1OnboardResponse": {
+      "type": "object"
+    },
     "v1Output": {
       "type": "object",
       "properties": {
diff --git a/server/api-spec/protobuf/ark/v1/service.proto b/server/api-spec/protobuf/ark/v1/service.proto
index 7edd7be..4e487c3 100755
--- a/server/api-spec/protobuf/ark/v1/service.proto
+++ b/server/api-spec/protobuf/ark/v1/service.proto
@@ -38,11 +38,6 @@ service ArkService {
       get: "/v1/ping/{payment_id}"
     };
   };
-  rpc Faucet(FaucetRequest) returns (FaucetResponse) {
-    option (google.api.http) = {
-      post: "/v1/faucet/{address}"
-    };
-  }
   rpc ListVtxos(ListVtxosRequest) returns (ListVtxosResponse) {
     option (google.api.http) = {
       get: "/v1/vtxos/{address}"
@@ -53,6 +48,21 @@ service ArkService {
       get: "/v1/info"
     };
   }
+  rpc Onboard(OnboardRequest) returns (OnboardResponse) {
+    option (google.api.http) = {
+      post: "/v1/onboard"
+      body: "*"
+    };
+  }
+}
+
+message OnboardRequest {
+  string boarding_tx = 1;
+  Tree congestion_tree = 2;
+  string user_pubkey = 3;
+}
+
+message OnboardResponse {
 }
 
 message RegisterPaymentRequest {
@@ -151,12 +161,6 @@ message PingRequest {
 
 message PingResponse {}
 
-message FaucetRequest {
-  string address = 1;
-}
-
-message FaucetResponse {}
-
 message ListVtxosRequest {
   string address = 1;
 }
diff --git a/server/api-spec/protobuf/gen/ark/v1/service.pb.go b/server/api-spec/protobuf/gen/ark/v1/service.pb.go
index 9f65c51..513ab32 100644
--- a/server/api-spec/protobuf/gen/ark/v1/service.pb.go
+++ b/server/api-spec/protobuf/gen/ark/v1/service.pb.go
@@ -21,6 +21,107 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type OnboardRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	BoardingTx     string `protobuf:"bytes,1,opt,name=boarding_tx,json=boardingTx,proto3" json:"boarding_tx,omitempty"`
+	CongestionTree *Tree  `protobuf:"bytes,2,opt,name=congestion_tree,json=congestionTree,proto3" json:"congestion_tree,omitempty"`
+	UserPubkey     string `protobuf:"bytes,3,opt,name=user_pubkey,json=userPubkey,proto3" json:"user_pubkey,omitempty"`
+}
+
+func (x *OnboardRequest) Reset() {
+	*x = OnboardRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ark_v1_service_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *OnboardRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*OnboardRequest) ProtoMessage() {}
+
+func (x *OnboardRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_ark_v1_service_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use OnboardRequest.ProtoReflect.Descriptor instead.
+func (*OnboardRequest) Descriptor() ([]byte, []int) {
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *OnboardRequest) GetBoardingTx() string {
+	if x != nil {
+		return x.BoardingTx
+	}
+	return ""
+}
+
+func (x *OnboardRequest) GetCongestionTree() *Tree {
+	if x != nil {
+		return x.CongestionTree
+	}
+	return nil
+}
+
+func (x *OnboardRequest) GetUserPubkey() string {
+	if x != nil {
+		return x.UserPubkey
+	}
+	return ""
+}
+
+type OnboardResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *OnboardResponse) Reset() {
+	*x = OnboardResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ark_v1_service_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *OnboardResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*OnboardResponse) ProtoMessage() {}
+
+func (x *OnboardResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_ark_v1_service_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use OnboardResponse.ProtoReflect.Descriptor instead.
+func (*OnboardResponse) Descriptor() ([]byte, []int) {
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{1}
+}
+
 type RegisterPaymentRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -32,7 +133,7 @@ type RegisterPaymentRequest struct {
 func (x *RegisterPaymentRequest) Reset() {
 	*x = RegisterPaymentRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[0]
+		mi := &file_ark_v1_service_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -45,7 +146,7 @@ func (x *RegisterPaymentRequest) String() string {
 func (*RegisterPaymentRequest) ProtoMessage() {}
 
 func (x *RegisterPaymentRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[0]
+	mi := &file_ark_v1_service_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -58,7 +159,7 @@ func (x *RegisterPaymentRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RegisterPaymentRequest.ProtoReflect.Descriptor instead.
 func (*RegisterPaymentRequest) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{0}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *RegisterPaymentRequest) GetInputs() []*Input {
@@ -80,7 +181,7 @@ type RegisterPaymentResponse struct {
 func (x *RegisterPaymentResponse) Reset() {
 	*x = RegisterPaymentResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[1]
+		mi := &file_ark_v1_service_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -93,7 +194,7 @@ func (x *RegisterPaymentResponse) String() string {
 func (*RegisterPaymentResponse) ProtoMessage() {}
 
 func (x *RegisterPaymentResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[1]
+	mi := &file_ark_v1_service_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -106,7 +207,7 @@ func (x *RegisterPaymentResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RegisterPaymentResponse.ProtoReflect.Descriptor instead.
 func (*RegisterPaymentResponse) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{1}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *RegisterPaymentResponse) GetId() string {
@@ -130,7 +231,7 @@ type ClaimPaymentRequest struct {
 func (x *ClaimPaymentRequest) Reset() {
 	*x = ClaimPaymentRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[2]
+		mi := &file_ark_v1_service_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -143,7 +244,7 @@ func (x *ClaimPaymentRequest) String() string {
 func (*ClaimPaymentRequest) ProtoMessage() {}
 
 func (x *ClaimPaymentRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[2]
+	mi := &file_ark_v1_service_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -156,7 +257,7 @@ func (x *ClaimPaymentRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ClaimPaymentRequest.ProtoReflect.Descriptor instead.
 func (*ClaimPaymentRequest) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{2}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *ClaimPaymentRequest) GetId() string {
@@ -182,7 +283,7 @@ type ClaimPaymentResponse struct {
 func (x *ClaimPaymentResponse) Reset() {
 	*x = ClaimPaymentResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[3]
+		mi := &file_ark_v1_service_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -195,7 +296,7 @@ func (x *ClaimPaymentResponse) String() string {
 func (*ClaimPaymentResponse) ProtoMessage() {}
 
 func (x *ClaimPaymentResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[3]
+	mi := &file_ark_v1_service_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -208,7 +309,7 @@ func (x *ClaimPaymentResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ClaimPaymentResponse.ProtoReflect.Descriptor instead.
 func (*ClaimPaymentResponse) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{3}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{5}
 }
 
 type FinalizePaymentRequest struct {
@@ -223,7 +324,7 @@ type FinalizePaymentRequest struct {
 func (x *FinalizePaymentRequest) Reset() {
 	*x = FinalizePaymentRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[4]
+		mi := &file_ark_v1_service_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -236,7 +337,7 @@ func (x *FinalizePaymentRequest) String() string {
 func (*FinalizePaymentRequest) ProtoMessage() {}
 
 func (x *FinalizePaymentRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[4]
+	mi := &file_ark_v1_service_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -249,7 +350,7 @@ func (x *FinalizePaymentRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use FinalizePaymentRequest.ProtoReflect.Descriptor instead.
 func (*FinalizePaymentRequest) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{4}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *FinalizePaymentRequest) GetSignedForfeitTxs() []string {
@@ -268,7 +369,7 @@ type FinalizePaymentResponse struct {
 func (x *FinalizePaymentResponse) Reset() {
 	*x = FinalizePaymentResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[5]
+		mi := &file_ark_v1_service_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -281,7 +382,7 @@ func (x *FinalizePaymentResponse) String() string {
 func (*FinalizePaymentResponse) ProtoMessage() {}
 
 func (x *FinalizePaymentResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[5]
+	mi := &file_ark_v1_service_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -294,7 +395,7 @@ func (x *FinalizePaymentResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use FinalizePaymentResponse.ProtoReflect.Descriptor instead.
 func (*FinalizePaymentResponse) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{5}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{7}
 }
 
 type GetRoundRequest struct {
@@ -308,7 +409,7 @@ type GetRoundRequest struct {
 func (x *GetRoundRequest) Reset() {
 	*x = GetRoundRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[6]
+		mi := &file_ark_v1_service_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -321,7 +422,7 @@ func (x *GetRoundRequest) String() string {
 func (*GetRoundRequest) ProtoMessage() {}
 
 func (x *GetRoundRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[6]
+	mi := &file_ark_v1_service_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -334,7 +435,7 @@ func (x *GetRoundRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetRoundRequest.ProtoReflect.Descriptor instead.
 func (*GetRoundRequest) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{6}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *GetRoundRequest) GetTxid() string {
@@ -355,7 +456,7 @@ type GetRoundResponse struct {
 func (x *GetRoundResponse) Reset() {
 	*x = GetRoundResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[7]
+		mi := &file_ark_v1_service_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -368,7 +469,7 @@ func (x *GetRoundResponse) String() string {
 func (*GetRoundResponse) ProtoMessage() {}
 
 func (x *GetRoundResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[7]
+	mi := &file_ark_v1_service_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -381,7 +482,7 @@ func (x *GetRoundResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetRoundResponse.ProtoReflect.Descriptor instead.
 func (*GetRoundResponse) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{7}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *GetRoundResponse) GetRound() *Round {
@@ -406,7 +507,7 @@ type Round struct {
 func (x *Round) Reset() {
 	*x = Round{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[8]
+		mi := &file_ark_v1_service_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -419,7 +520,7 @@ func (x *Round) String() string {
 func (*Round) ProtoMessage() {}
 
 func (x *Round) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[8]
+	mi := &file_ark_v1_service_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -432,7 +533,7 @@ func (x *Round) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Round.ProtoReflect.Descriptor instead.
 func (*Round) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{8}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *Round) GetId() string {
@@ -482,7 +583,7 @@ type Input struct {
 func (x *Input) Reset() {
 	*x = Input{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[9]
+		mi := &file_ark_v1_service_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -495,7 +596,7 @@ func (x *Input) String() string {
 func (*Input) ProtoMessage() {}
 
 func (x *Input) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[9]
+	mi := &file_ark_v1_service_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -508,7 +609,7 @@ func (x *Input) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Input.ProtoReflect.Descriptor instead.
 func (*Input) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{9}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *Input) GetTxid() string {
@@ -539,7 +640,7 @@ type Output struct {
 func (x *Output) Reset() {
 	*x = Output{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[10]
+		mi := &file_ark_v1_service_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -552,7 +653,7 @@ func (x *Output) String() string {
 func (*Output) ProtoMessage() {}
 
 func (x *Output) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[10]
+	mi := &file_ark_v1_service_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -565,7 +666,7 @@ func (x *Output) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Output.ProtoReflect.Descriptor instead.
 func (*Output) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{10}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *Output) GetAddress() string {
@@ -596,7 +697,7 @@ type RoundFinalizationEvent struct {
 func (x *RoundFinalizationEvent) Reset() {
 	*x = RoundFinalizationEvent{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[11]
+		mi := &file_ark_v1_service_proto_msgTypes[13]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -609,7 +710,7 @@ func (x *RoundFinalizationEvent) String() string {
 func (*RoundFinalizationEvent) ProtoMessage() {}
 
 func (x *RoundFinalizationEvent) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[11]
+	mi := &file_ark_v1_service_proto_msgTypes[13]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -622,7 +723,7 @@ func (x *RoundFinalizationEvent) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RoundFinalizationEvent.ProtoReflect.Descriptor instead.
 func (*RoundFinalizationEvent) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{11}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{13}
 }
 
 func (x *RoundFinalizationEvent) GetId() string {
@@ -664,7 +765,7 @@ type Tree struct {
 func (x *Tree) Reset() {
 	*x = Tree{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[12]
+		mi := &file_ark_v1_service_proto_msgTypes[14]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -677,7 +778,7 @@ func (x *Tree) String() string {
 func (*Tree) ProtoMessage() {}
 
 func (x *Tree) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[12]
+	mi := &file_ark_v1_service_proto_msgTypes[14]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -690,7 +791,7 @@ func (x *Tree) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Tree.ProtoReflect.Descriptor instead.
 func (*Tree) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{12}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{14}
 }
 
 func (x *Tree) GetLevels() []*TreeLevel {
@@ -711,7 +812,7 @@ type TreeLevel struct {
 func (x *TreeLevel) Reset() {
 	*x = TreeLevel{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[13]
+		mi := &file_ark_v1_service_proto_msgTypes[15]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -724,7 +825,7 @@ func (x *TreeLevel) String() string {
 func (*TreeLevel) ProtoMessage() {}
 
 func (x *TreeLevel) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[13]
+	mi := &file_ark_v1_service_proto_msgTypes[15]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -737,7 +838,7 @@ func (x *TreeLevel) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TreeLevel.ProtoReflect.Descriptor instead.
 func (*TreeLevel) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{13}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{15}
 }
 
 func (x *TreeLevel) GetNodes() []*Node {
@@ -760,7 +861,7 @@ type Node struct {
 func (x *Node) Reset() {
 	*x = Node{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[14]
+		mi := &file_ark_v1_service_proto_msgTypes[16]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -773,7 +874,7 @@ func (x *Node) String() string {
 func (*Node) ProtoMessage() {}
 
 func (x *Node) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[14]
+	mi := &file_ark_v1_service_proto_msgTypes[16]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -786,7 +887,7 @@ func (x *Node) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Node.ProtoReflect.Descriptor instead.
 func (*Node) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{14}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{16}
 }
 
 func (x *Node) GetTxid() string {
@@ -822,7 +923,7 @@ type RoundFinalizedEvent struct {
 func (x *RoundFinalizedEvent) Reset() {
 	*x = RoundFinalizedEvent{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[15]
+		mi := &file_ark_v1_service_proto_msgTypes[17]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -835,7 +936,7 @@ func (x *RoundFinalizedEvent) String() string {
 func (*RoundFinalizedEvent) ProtoMessage() {}
 
 func (x *RoundFinalizedEvent) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[15]
+	mi := &file_ark_v1_service_proto_msgTypes[17]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -848,7 +949,7 @@ func (x *RoundFinalizedEvent) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RoundFinalizedEvent.ProtoReflect.Descriptor instead.
 func (*RoundFinalizedEvent) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{15}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{17}
 }
 
 func (x *RoundFinalizedEvent) GetId() string {
@@ -877,7 +978,7 @@ type RoundFailed struct {
 func (x *RoundFailed) Reset() {
 	*x = RoundFailed{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[16]
+		mi := &file_ark_v1_service_proto_msgTypes[18]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -890,7 +991,7 @@ func (x *RoundFailed) String() string {
 func (*RoundFailed) ProtoMessage() {}
 
 func (x *RoundFailed) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[16]
+	mi := &file_ark_v1_service_proto_msgTypes[18]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -903,7 +1004,7 @@ func (x *RoundFailed) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RoundFailed.ProtoReflect.Descriptor instead.
 func (*RoundFailed) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{16}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{18}
 }
 
 func (x *RoundFailed) GetId() string {
@@ -929,7 +1030,7 @@ type GetEventStreamRequest struct {
 func (x *GetEventStreamRequest) Reset() {
 	*x = GetEventStreamRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[17]
+		mi := &file_ark_v1_service_proto_msgTypes[19]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -942,7 +1043,7 @@ func (x *GetEventStreamRequest) String() string {
 func (*GetEventStreamRequest) ProtoMessage() {}
 
 func (x *GetEventStreamRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[17]
+	mi := &file_ark_v1_service_proto_msgTypes[19]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -955,7 +1056,7 @@ func (x *GetEventStreamRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetEventStreamRequest.ProtoReflect.Descriptor instead.
 func (*GetEventStreamRequest) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{17}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{19}
 }
 
 type GetEventStreamResponse struct {
@@ -974,7 +1075,7 @@ type GetEventStreamResponse struct {
 func (x *GetEventStreamResponse) Reset() {
 	*x = GetEventStreamResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[18]
+		mi := &file_ark_v1_service_proto_msgTypes[20]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -987,7 +1088,7 @@ func (x *GetEventStreamResponse) String() string {
 func (*GetEventStreamResponse) ProtoMessage() {}
 
 func (x *GetEventStreamResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[18]
+	mi := &file_ark_v1_service_proto_msgTypes[20]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1000,7 +1101,7 @@ func (x *GetEventStreamResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetEventStreamResponse.ProtoReflect.Descriptor instead.
 func (*GetEventStreamResponse) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{18}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{20}
 }
 
 func (m *GetEventStreamResponse) GetEvent() isGetEventStreamResponse_Event {
@@ -1064,7 +1165,7 @@ type PingRequest struct {
 func (x *PingRequest) Reset() {
 	*x = PingRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[19]
+		mi := &file_ark_v1_service_proto_msgTypes[21]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1077,7 +1178,7 @@ func (x *PingRequest) String() string {
 func (*PingRequest) ProtoMessage() {}
 
 func (x *PingRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[19]
+	mi := &file_ark_v1_service_proto_msgTypes[21]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1090,7 +1191,7 @@ func (x *PingRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PingRequest.ProtoReflect.Descriptor instead.
 func (*PingRequest) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{19}
+	return file_ark_v1_service_proto_rawDescGZIP(), []int{21}
 }
 
 func (x *PingRequest) GetPaymentId() string {
@@ -1109,7 +1210,7 @@ type PingResponse struct {
 func (x *PingResponse) Reset() {
 	*x = PingResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[20]
+		mi := &file_ark_v1_service_proto_msgTypes[22]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1122,7 +1223,7 @@ func (x *PingResponse) String() string {
 func (*PingResponse) ProtoMessage() {}
 
 func (x *PingResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[20]
+	mi := &file_ark_v1_service_proto_msgTypes[22]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1135,91 +1236,6 @@ func (x *PingResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PingResponse.ProtoReflect.Descriptor instead.
 func (*PingResponse) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{20}
-}
-
-type FaucetRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Address string `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
-}
-
-func (x *FaucetRequest) Reset() {
-	*x = FaucetRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[21]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *FaucetRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*FaucetRequest) ProtoMessage() {}
-
-func (x *FaucetRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[21]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use FaucetRequest.ProtoReflect.Descriptor instead.
-func (*FaucetRequest) Descriptor() ([]byte, []int) {
-	return file_ark_v1_service_proto_rawDescGZIP(), []int{21}
-}
-
-func (x *FaucetRequest) GetAddress() string {
-	if x != nil {
-		return x.Address
-	}
-	return ""
-}
-
-type FaucetResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *FaucetResponse) Reset() {
-	*x = FaucetResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_ark_v1_service_proto_msgTypes[22]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *FaucetResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*FaucetResponse) ProtoMessage() {}
-
-func (x *FaucetResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_ark_v1_service_proto_msgTypes[22]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use FaucetResponse.ProtoReflect.Descriptor instead.
-func (*FaucetResponse) Descriptor() ([]byte, []int) {
 	return file_ark_v1_service_proto_rawDescGZIP(), []int{22}
 }
 
@@ -1495,191 +1511,197 @@ var file_ark_v1_service_proto_rawDesc = []byte{
 	0x0a, 0x14, 0x61, 0x72, 0x6b, 0x2f, 0x76, 0x31, 0x2f, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65,
 	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x06, 0x61, 0x72, 0x6b, 0x2e, 0x76, 0x31, 0x1a, 0x1c,
 	0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74,
-	0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x3f, 0x0a, 0x16,
+	0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x89, 0x01, 0x0a,
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+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1696,29 +1718,29 @@ func file_ark_v1_service_proto_rawDescGZIP() []byte {
 
 var file_ark_v1_service_proto_msgTypes = make([]protoimpl.MessageInfo, 28)
 var file_ark_v1_service_proto_goTypes = []interface{}{
-	(*RegisterPaymentRequest)(nil),  // 0: ark.v1.RegisterPaymentRequest
-	(*RegisterPaymentResponse)(nil), // 1: ark.v1.RegisterPaymentResponse
-	(*ClaimPaymentRequest)(nil),     // 2: ark.v1.ClaimPaymentRequest
-	(*ClaimPaymentResponse)(nil),    // 3: ark.v1.ClaimPaymentResponse
-	(*FinalizePaymentRequest)(nil),  // 4: ark.v1.FinalizePaymentRequest
-	(*FinalizePaymentResponse)(nil), // 5: ark.v1.FinalizePaymentResponse
-	(*GetRoundRequest)(nil),         // 6: ark.v1.GetRoundRequest
-	(*GetRoundResponse)(nil),        // 7: ark.v1.GetRoundResponse
-	(*Round)(nil),                   // 8: ark.v1.Round
-	(*Input)(nil),                   // 9: ark.v1.Input
-	(*Output)(nil),                  // 10: ark.v1.Output
-	(*RoundFinalizationEvent)(nil),  // 11: ark.v1.RoundFinalizationEvent
-	(*Tree)(nil),                    // 12: ark.v1.Tree
-	(*TreeLevel)(nil),               // 13: ark.v1.TreeLevel
-	(*Node)(nil),                    // 14: ark.v1.Node
-	(*RoundFinalizedEvent)(nil),     // 15: ark.v1.RoundFinalizedEvent
-	(*RoundFailed)(nil),             // 16: ark.v1.RoundFailed
-	(*GetEventStreamRequest)(nil),   // 17: ark.v1.GetEventStreamRequest
-	(*GetEventStreamResponse)(nil),  // 18: ark.v1.GetEventStreamResponse
-	(*PingRequest)(nil),             // 19: ark.v1.PingRequest
-	(*PingResponse)(nil),            // 20: ark.v1.PingResponse
-	(*FaucetRequest)(nil),           // 21: ark.v1.FaucetRequest
-	(*FaucetResponse)(nil),          // 22: ark.v1.FaucetResponse
+	(*OnboardRequest)(nil),          // 0: ark.v1.OnboardRequest
+	(*OnboardResponse)(nil),         // 1: ark.v1.OnboardResponse
+	(*RegisterPaymentRequest)(nil),  // 2: ark.v1.RegisterPaymentRequest
+	(*RegisterPaymentResponse)(nil), // 3: ark.v1.RegisterPaymentResponse
+	(*ClaimPaymentRequest)(nil),     // 4: ark.v1.ClaimPaymentRequest
+	(*ClaimPaymentResponse)(nil),    // 5: ark.v1.ClaimPaymentResponse
+	(*FinalizePaymentRequest)(nil),  // 6: ark.v1.FinalizePaymentRequest
+	(*FinalizePaymentResponse)(nil), // 7: ark.v1.FinalizePaymentResponse
+	(*GetRoundRequest)(nil),         // 8: ark.v1.GetRoundRequest
+	(*GetRoundResponse)(nil),        // 9: ark.v1.GetRoundResponse
+	(*Round)(nil),                   // 10: ark.v1.Round
+	(*Input)(nil),                   // 11: ark.v1.Input
+	(*Output)(nil),                  // 12: ark.v1.Output
+	(*RoundFinalizationEvent)(nil),  // 13: ark.v1.RoundFinalizationEvent
+	(*Tree)(nil),                    // 14: ark.v1.Tree
+	(*TreeLevel)(nil),               // 15: ark.v1.TreeLevel
+	(*Node)(nil),                    // 16: ark.v1.Node
+	(*RoundFinalizedEvent)(nil),     // 17: ark.v1.RoundFinalizedEvent
+	(*RoundFailed)(nil),             // 18: ark.v1.RoundFailed
+	(*GetEventStreamRequest)(nil),   // 19: ark.v1.GetEventStreamRequest
+	(*GetEventStreamResponse)(nil),  // 20: ark.v1.GetEventStreamResponse
+	(*PingRequest)(nil),             // 21: ark.v1.PingRequest
+	(*PingResponse)(nil),            // 22: ark.v1.PingResponse
 	(*ListVtxosRequest)(nil),        // 23: ark.v1.ListVtxosRequest
 	(*ListVtxosResponse)(nil),       // 24: ark.v1.ListVtxosResponse
 	(*Vtxo)(nil),                    // 25: ark.v1.Vtxo
@@ -1726,42 +1748,43 @@ var file_ark_v1_service_proto_goTypes = []interface{}{
 	(*GetInfoResponse)(nil),         // 27: ark.v1.GetInfoResponse
 }
 var file_ark_v1_service_proto_depIdxs = []int32{
-	9,  // 0: ark.v1.RegisterPaymentRequest.inputs:type_name -> ark.v1.Input
-	10, // 1: ark.v1.ClaimPaymentRequest.outputs:type_name -> ark.v1.Output
-	8,  // 2: ark.v1.GetRoundResponse.round:type_name -> ark.v1.Round
-	12, // 3: ark.v1.Round.congestion_tree:type_name -> ark.v1.Tree
-	12, // 4: ark.v1.RoundFinalizationEvent.congestion_tree:type_name -> ark.v1.Tree
-	13, // 5: ark.v1.Tree.levels:type_name -> ark.v1.TreeLevel
-	14, // 6: ark.v1.TreeLevel.nodes:type_name -> ark.v1.Node
-	11, // 7: ark.v1.GetEventStreamResponse.round_finalization:type_name -> ark.v1.RoundFinalizationEvent
-	15, // 8: ark.v1.GetEventStreamResponse.round_finalized:type_name -> ark.v1.RoundFinalizedEvent
-	16, // 9: ark.v1.GetEventStreamResponse.round_failed:type_name -> ark.v1.RoundFailed
-	25, // 10: ark.v1.ListVtxosResponse.vtxos:type_name -> ark.v1.Vtxo
-	9,  // 11: ark.v1.Vtxo.outpoint:type_name -> ark.v1.Input
-	10, // 12: ark.v1.Vtxo.receiver:type_name -> ark.v1.Output
-	0,  // 13: ark.v1.ArkService.RegisterPayment:input_type -> ark.v1.RegisterPaymentRequest
-	2,  // 14: ark.v1.ArkService.ClaimPayment:input_type -> ark.v1.ClaimPaymentRequest
-	4,  // 15: ark.v1.ArkService.FinalizePayment:input_type -> ark.v1.FinalizePaymentRequest
-	6,  // 16: ark.v1.ArkService.GetRound:input_type -> ark.v1.GetRoundRequest
-	17, // 17: ark.v1.ArkService.GetEventStream:input_type -> ark.v1.GetEventStreamRequest
-	19, // 18: ark.v1.ArkService.Ping:input_type -> ark.v1.PingRequest
-	21, // 19: ark.v1.ArkService.Faucet:input_type -> ark.v1.FaucetRequest
+	14, // 0: ark.v1.OnboardRequest.congestion_tree:type_name -> ark.v1.Tree
+	11, // 1: ark.v1.RegisterPaymentRequest.inputs:type_name -> ark.v1.Input
+	12, // 2: ark.v1.ClaimPaymentRequest.outputs:type_name -> ark.v1.Output
+	10, // 3: ark.v1.GetRoundResponse.round:type_name -> ark.v1.Round
+	14, // 4: ark.v1.Round.congestion_tree:type_name -> ark.v1.Tree
+	14, // 5: ark.v1.RoundFinalizationEvent.congestion_tree:type_name -> ark.v1.Tree
+	15, // 6: ark.v1.Tree.levels:type_name -> ark.v1.TreeLevel
+	16, // 7: ark.v1.TreeLevel.nodes:type_name -> ark.v1.Node
+	13, // 8: ark.v1.GetEventStreamResponse.round_finalization:type_name -> ark.v1.RoundFinalizationEvent
+	17, // 9: ark.v1.GetEventStreamResponse.round_finalized:type_name -> ark.v1.RoundFinalizedEvent
+	18, // 10: ark.v1.GetEventStreamResponse.round_failed:type_name -> ark.v1.RoundFailed
+	25, // 11: ark.v1.ListVtxosResponse.vtxos:type_name -> ark.v1.Vtxo
+	11, // 12: ark.v1.Vtxo.outpoint:type_name -> ark.v1.Input
+	12, // 13: ark.v1.Vtxo.receiver:type_name -> ark.v1.Output
+	2,  // 14: ark.v1.ArkService.RegisterPayment:input_type -> ark.v1.RegisterPaymentRequest
+	4,  // 15: ark.v1.ArkService.ClaimPayment:input_type -> ark.v1.ClaimPaymentRequest
+	6,  // 16: ark.v1.ArkService.FinalizePayment:input_type -> ark.v1.FinalizePaymentRequest
+	8,  // 17: ark.v1.ArkService.GetRound:input_type -> ark.v1.GetRoundRequest
+	19, // 18: ark.v1.ArkService.GetEventStream:input_type -> ark.v1.GetEventStreamRequest
+	21, // 19: ark.v1.ArkService.Ping:input_type -> ark.v1.PingRequest
 	23, // 20: ark.v1.ArkService.ListVtxos:input_type -> ark.v1.ListVtxosRequest
 	26, // 21: ark.v1.ArkService.GetInfo:input_type -> ark.v1.GetInfoRequest
-	1,  // 22: ark.v1.ArkService.RegisterPayment:output_type -> ark.v1.RegisterPaymentResponse
-	3,  // 23: ark.v1.ArkService.ClaimPayment:output_type -> ark.v1.ClaimPaymentResponse
-	5,  // 24: ark.v1.ArkService.FinalizePayment:output_type -> ark.v1.FinalizePaymentResponse
-	7,  // 25: ark.v1.ArkService.GetRound:output_type -> ark.v1.GetRoundResponse
-	18, // 26: ark.v1.ArkService.GetEventStream:output_type -> ark.v1.GetEventStreamResponse
-	20, // 27: ark.v1.ArkService.Ping:output_type -> ark.v1.PingResponse
-	22, // 28: ark.v1.ArkService.Faucet:output_type -> ark.v1.FaucetResponse
+	0,  // 22: ark.v1.ArkService.Onboard:input_type -> ark.v1.OnboardRequest
+	3,  // 23: ark.v1.ArkService.RegisterPayment:output_type -> ark.v1.RegisterPaymentResponse
+	5,  // 24: ark.v1.ArkService.ClaimPayment:output_type -> ark.v1.ClaimPaymentResponse
+	7,  // 25: ark.v1.ArkService.FinalizePayment:output_type -> ark.v1.FinalizePaymentResponse
+	9,  // 26: ark.v1.ArkService.GetRound:output_type -> ark.v1.GetRoundResponse
+	20, // 27: ark.v1.ArkService.GetEventStream:output_type -> ark.v1.GetEventStreamResponse
+	22, // 28: ark.v1.ArkService.Ping:output_type -> ark.v1.PingResponse
 	24, // 29: ark.v1.ArkService.ListVtxos:output_type -> ark.v1.ListVtxosResponse
 	27, // 30: ark.v1.ArkService.GetInfo:output_type -> ark.v1.GetInfoResponse
-	22, // [22:31] is the sub-list for method output_type
-	13, // [13:22] is the sub-list for method input_type
-	13, // [13:13] is the sub-list for extension type_name
-	13, // [13:13] is the sub-list for extension extendee
-	0,  // [0:13] is the sub-list for field type_name
+	1,  // 31: ark.v1.ArkService.Onboard:output_type -> ark.v1.OnboardResponse
+	23, // [23:32] is the sub-list for method output_type
+	14, // [14:23] is the sub-list for method input_type
+	14, // [14:14] is the sub-list for extension type_name
+	14, // [14:14] is the sub-list for extension extendee
+	0,  // [0:14] is the sub-list for field type_name
 }
 
 func init() { file_ark_v1_service_proto_init() }
@@ -1771,7 +1794,7 @@ func file_ark_v1_service_proto_init() {
 	}
 	if !protoimpl.UnsafeEnabled {
 		file_ark_v1_service_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RegisterPaymentRequest); i {
+			switch v := v.(*OnboardRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1783,7 +1806,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RegisterPaymentResponse); i {
+			switch v := v.(*OnboardResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1795,7 +1818,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ClaimPaymentRequest); i {
+			switch v := v.(*RegisterPaymentRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1807,7 +1830,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ClaimPaymentResponse); i {
+			switch v := v.(*RegisterPaymentResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1819,7 +1842,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FinalizePaymentRequest); i {
+			switch v := v.(*ClaimPaymentRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1831,7 +1854,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FinalizePaymentResponse); i {
+			switch v := v.(*ClaimPaymentResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1843,7 +1866,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetRoundRequest); i {
+			switch v := v.(*FinalizePaymentRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1855,7 +1878,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetRoundResponse); i {
+			switch v := v.(*FinalizePaymentResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1867,7 +1890,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Round); i {
+			switch v := v.(*GetRoundRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1879,7 +1902,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Input); i {
+			switch v := v.(*GetRoundResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1891,7 +1914,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Output); i {
+			switch v := v.(*Round); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1903,7 +1926,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RoundFinalizationEvent); i {
+			switch v := v.(*Input); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1915,7 +1938,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Tree); i {
+			switch v := v.(*Output); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1927,7 +1950,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*TreeLevel); i {
+			switch v := v.(*RoundFinalizationEvent); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1939,7 +1962,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Node); i {
+			switch v := v.(*Tree); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1951,7 +1974,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RoundFinalizedEvent); i {
+			switch v := v.(*TreeLevel); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1963,7 +1986,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RoundFailed); i {
+			switch v := v.(*Node); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1975,7 +1998,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetEventStreamRequest); i {
+			switch v := v.(*RoundFinalizedEvent); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1987,7 +2010,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetEventStreamResponse); i {
+			switch v := v.(*RoundFailed); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1999,7 +2022,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[19].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PingRequest); i {
+			switch v := v.(*GetEventStreamRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2011,7 +2034,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[20].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PingResponse); i {
+			switch v := v.(*GetEventStreamResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2023,7 +2046,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[21].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FaucetRequest); i {
+			switch v := v.(*PingRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2035,7 +2058,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 		file_ark_v1_service_proto_msgTypes[22].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FaucetResponse); i {
+			switch v := v.(*PingResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2107,7 +2130,7 @@ func file_ark_v1_service_proto_init() {
 			}
 		}
 	}
-	file_ark_v1_service_proto_msgTypes[18].OneofWrappers = []interface{}{
+	file_ark_v1_service_proto_msgTypes[20].OneofWrappers = []interface{}{
 		(*GetEventStreamResponse_RoundFinalization)(nil),
 		(*GetEventStreamResponse_RoundFinalized)(nil),
 		(*GetEventStreamResponse_RoundFailed)(nil),
diff --git a/server/api-spec/protobuf/gen/ark/v1/service.pb.gw.go b/server/api-spec/protobuf/gen/ark/v1/service.pb.gw.go
index d436bb8..c981689 100644
--- a/server/api-spec/protobuf/gen/ark/v1/service.pb.gw.go
+++ b/server/api-spec/protobuf/gen/ark/v1/service.pb.gw.go
@@ -230,58 +230,6 @@ func local_request_ArkService_Ping_0(ctx context.Context, marshaler runtime.Mars
 
 }
 
-func request_ArkService_Faucet_0(ctx context.Context, marshaler runtime.Marshaler, client ArkServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq FaucetRequest
-	var metadata runtime.ServerMetadata
-
-	var (
-		val string
-		ok  bool
-		err error
-		_   = err
-	)
-
-	val, ok = pathParams["address"]
-	if !ok {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "address")
-	}
-
-	protoReq.Address, err = runtime.String(val)
-	if err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "address", err)
-	}
-
-	msg, err := client.Faucet(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
-	return msg, metadata, err
-
-}
-
-func local_request_ArkService_Faucet_0(ctx context.Context, marshaler runtime.Marshaler, server ArkServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq FaucetRequest
-	var metadata runtime.ServerMetadata
-
-	var (
-		val string
-		ok  bool
-		err error
-		_   = err
-	)
-
-	val, ok = pathParams["address"]
-	if !ok {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "address")
-	}
-
-	protoReq.Address, err = runtime.String(val)
-	if err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "address", err)
-	}
-
-	msg, err := server.Faucet(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
 func request_ArkService_ListVtxos_0(ctx context.Context, marshaler runtime.Marshaler, client ArkServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
 	var protoReq ListVtxosRequest
 	var metadata runtime.ServerMetadata
@@ -352,6 +300,32 @@ func local_request_ArkService_GetInfo_0(ctx context.Context, marshaler runtime.M
 
 }
 
+func request_ArkService_Onboard_0(ctx context.Context, marshaler runtime.Marshaler, client ArkServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq OnboardRequest
+	var metadata runtime.ServerMetadata
+
+	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	msg, err := client.Onboard(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_ArkService_Onboard_0(ctx context.Context, marshaler runtime.Marshaler, server ArkServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq OnboardRequest
+	var metadata runtime.ServerMetadata
+
+	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	msg, err := server.Onboard(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
 // RegisterArkServiceHandlerServer registers the http handlers for service ArkService to "mux".
 // UnaryRPC     :call ArkServiceServer directly.
 // StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
@@ -490,31 +464,6 @@ func RegisterArkServiceHandlerServer(ctx context.Context, mux *runtime.ServeMux,
 
 	})
 
-	mux.Handle("POST", pattern_ArkService_Faucet_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		var stream runtime.ServerTransportStream
-		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/ark.v1.ArkService/Faucet", runtime.WithHTTPPathPattern("/v1/faucet/{address}"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_ArkService_Faucet_0(annotatedContext, inboundMarshaler, server, req, pathParams)
-		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_ArkService_Faucet_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
 	mux.Handle("GET", pattern_ArkService_ListVtxos_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@@ -565,6 +514,31 @@ func RegisterArkServiceHandlerServer(ctx context.Context, mux *runtime.ServeMux,
 
 	})
 
+	mux.Handle("POST", pattern_ArkService_Onboard_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		var err error
+		var annotatedContext context.Context
+		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/ark.v1.ArkService/Onboard", runtime.WithHTTPPathPattern("/v1/onboard"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_ArkService_Onboard_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_ArkService_Onboard_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
@@ -738,28 +712,6 @@ func RegisterArkServiceHandlerClient(ctx context.Context, mux *runtime.ServeMux,
 
 	})
 
-	mux.Handle("POST", pattern_ArkService_Faucet_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/ark.v1.ArkService/Faucet", runtime.WithHTTPPathPattern("/v1/faucet/{address}"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := request_ArkService_Faucet_0(annotatedContext, inboundMarshaler, client, req, pathParams)
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_ArkService_Faucet_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
 	mux.Handle("GET", pattern_ArkService_ListVtxos_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@@ -804,6 +756,28 @@ func RegisterArkServiceHandlerClient(ctx context.Context, mux *runtime.ServeMux,
 
 	})
 
+	mux.Handle("POST", pattern_ArkService_Onboard_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		var err error
+		var annotatedContext context.Context
+		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/ark.v1.ArkService/Onboard", runtime.WithHTTPPathPattern("/v1/onboard"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_ArkService_Onboard_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_ArkService_Onboard_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
@@ -820,11 +794,11 @@ var (
 
 	pattern_ArkService_Ping_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2}, []string{"v1", "ping", "payment_id"}, ""))
 
-	pattern_ArkService_Faucet_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2}, []string{"v1", "faucet", "address"}, ""))
-
 	pattern_ArkService_ListVtxos_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2}, []string{"v1", "vtxos", "address"}, ""))
 
 	pattern_ArkService_GetInfo_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1}, []string{"v1", "info"}, ""))
+
+	pattern_ArkService_Onboard_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1}, []string{"v1", "onboard"}, ""))
 )
 
 var (
@@ -840,9 +814,9 @@ var (
 
 	forward_ArkService_Ping_0 = runtime.ForwardResponseMessage
 
-	forward_ArkService_Faucet_0 = runtime.ForwardResponseMessage
-
 	forward_ArkService_ListVtxos_0 = runtime.ForwardResponseMessage
 
 	forward_ArkService_GetInfo_0 = runtime.ForwardResponseMessage
+
+	forward_ArkService_Onboard_0 = runtime.ForwardResponseMessage
 )
diff --git a/server/api-spec/protobuf/gen/ark/v1/service_grpc.pb.go b/server/api-spec/protobuf/gen/ark/v1/service_grpc.pb.go
index 4bf44d1..12d9057 100644
--- a/server/api-spec/protobuf/gen/ark/v1/service_grpc.pb.go
+++ b/server/api-spec/protobuf/gen/ark/v1/service_grpc.pb.go
@@ -24,9 +24,9 @@ type ArkServiceClient interface {
 	GetRound(ctx context.Context, in *GetRoundRequest, opts ...grpc.CallOption) (*GetRoundResponse, error)
 	GetEventStream(ctx context.Context, in *GetEventStreamRequest, opts ...grpc.CallOption) (ArkService_GetEventStreamClient, error)
 	Ping(ctx context.Context, in *PingRequest, opts ...grpc.CallOption) (*PingResponse, error)
-	Faucet(ctx context.Context, in *FaucetRequest, opts ...grpc.CallOption) (*FaucetResponse, error)
 	ListVtxos(ctx context.Context, in *ListVtxosRequest, opts ...grpc.CallOption) (*ListVtxosResponse, error)
 	GetInfo(ctx context.Context, in *GetInfoRequest, opts ...grpc.CallOption) (*GetInfoResponse, error)
+	Onboard(ctx context.Context, in *OnboardRequest, opts ...grpc.CallOption) (*OnboardResponse, error)
 }
 
 type arkServiceClient struct {
@@ -114,15 +114,6 @@ func (c *arkServiceClient) Ping(ctx context.Context, in *PingRequest, opts ...gr
 	return out, nil
 }
 
-func (c *arkServiceClient) Faucet(ctx context.Context, in *FaucetRequest, opts ...grpc.CallOption) (*FaucetResponse, error) {
-	out := new(FaucetResponse)
-	err := c.cc.Invoke(ctx, "/ark.v1.ArkService/Faucet", in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
 func (c *arkServiceClient) ListVtxos(ctx context.Context, in *ListVtxosRequest, opts ...grpc.CallOption) (*ListVtxosResponse, error) {
 	out := new(ListVtxosResponse)
 	err := c.cc.Invoke(ctx, "/ark.v1.ArkService/ListVtxos", in, out, opts...)
@@ -141,6 +132,15 @@ func (c *arkServiceClient) GetInfo(ctx context.Context, in *GetInfoRequest, opts
 	return out, nil
 }
 
+func (c *arkServiceClient) Onboard(ctx context.Context, in *OnboardRequest, opts ...grpc.CallOption) (*OnboardResponse, error) {
+	out := new(OnboardResponse)
+	err := c.cc.Invoke(ctx, "/ark.v1.ArkService/Onboard", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // ArkServiceServer is the server API for ArkService service.
 // All implementations should embed UnimplementedArkServiceServer
 // for forward compatibility
@@ -151,9 +151,9 @@ type ArkServiceServer interface {
 	GetRound(context.Context, *GetRoundRequest) (*GetRoundResponse, error)
 	GetEventStream(*GetEventStreamRequest, ArkService_GetEventStreamServer) error
 	Ping(context.Context, *PingRequest) (*PingResponse, error)
-	Faucet(context.Context, *FaucetRequest) (*FaucetResponse, error)
 	ListVtxos(context.Context, *ListVtxosRequest) (*ListVtxosResponse, error)
 	GetInfo(context.Context, *GetInfoRequest) (*GetInfoResponse, error)
+	Onboard(context.Context, *OnboardRequest) (*OnboardResponse, error)
 }
 
 // UnimplementedArkServiceServer should be embedded to have forward compatible implementations.
@@ -178,15 +178,15 @@ func (UnimplementedArkServiceServer) GetEventStream(*GetEventStreamRequest, ArkS
 func (UnimplementedArkServiceServer) Ping(context.Context, *PingRequest) (*PingResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Ping not implemented")
 }
-func (UnimplementedArkServiceServer) Faucet(context.Context, *FaucetRequest) (*FaucetResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Faucet not implemented")
-}
 func (UnimplementedArkServiceServer) ListVtxos(context.Context, *ListVtxosRequest) (*ListVtxosResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListVtxos not implemented")
 }
 func (UnimplementedArkServiceServer) GetInfo(context.Context, *GetInfoRequest) (*GetInfoResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetInfo not implemented")
 }
+func (UnimplementedArkServiceServer) Onboard(context.Context, *OnboardRequest) (*OnboardResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Onboard not implemented")
+}
 
 // UnsafeArkServiceServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to ArkServiceServer will
@@ -310,24 +310,6 @@ func _ArkService_Ping_Handler(srv interface{}, ctx context.Context, dec func(int
 	return interceptor(ctx, in, info, handler)
 }
 
-func _ArkService_Faucet_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(FaucetRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(ArkServiceServer).Faucet(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/ark.v1.ArkService/Faucet",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(ArkServiceServer).Faucet(ctx, req.(*FaucetRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
 func _ArkService_ListVtxos_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(ListVtxosRequest)
 	if err := dec(in); err != nil {
@@ -364,6 +346,24 @@ func _ArkService_GetInfo_Handler(srv interface{}, ctx context.Context, dec func(
 	return interceptor(ctx, in, info, handler)
 }
 
+func _ArkService_Onboard_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(OnboardRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ArkServiceServer).Onboard(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/ark.v1.ArkService/Onboard",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ArkServiceServer).Onboard(ctx, req.(*OnboardRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // ArkService_ServiceDesc is the grpc.ServiceDesc for ArkService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -391,10 +391,6 @@ var ArkService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "Ping",
 			Handler:    _ArkService_Ping_Handler,
 		},
-		{
-			MethodName: "Faucet",
-			Handler:    _ArkService_Faucet_Handler,
-		},
 		{
 			MethodName: "ListVtxos",
 			Handler:    _ArkService_ListVtxos_Handler,
@@ -403,6 +399,10 @@ var ArkService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "GetInfo",
 			Handler:    _ArkService_GetInfo_Handler,
 		},
+		{
+			MethodName: "Onboard",
+			Handler:    _ArkService_Onboard_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
diff --git a/server/internal/app-config/config.go b/server/internal/app-config/config.go
index f7b5839..17f5043 100644
--- a/server/internal/app-config/config.go
+++ b/server/internal/app-config/config.go
@@ -11,7 +11,6 @@ import (
 	oceanwallet "github.com/ark-network/ark/internal/infrastructure/ocean-wallet"
 	scheduler "github.com/ark-network/ark/internal/infrastructure/scheduler/gocron"
 	txbuilder "github.com/ark-network/ark/internal/infrastructure/tx-builder/covenant"
-	txbuilderdummy "github.com/ark-network/ark/internal/infrastructure/tx-builder/dummy"
 	log "github.com/sirupsen/logrus"
 	"github.com/vulpemventures/go-elements/network"
 )
@@ -24,7 +23,6 @@ var (
 		"gocron": {},
 	}
 	supportedTxBuilders = supportedType{
-		"dummy":    {},
 		"covenant": {},
 	}
 	supportedScanners = supportedType{
@@ -167,8 +165,6 @@ func (c *Config) txBuilderService() error {
 	net := c.mainChain()
 
 	switch c.TxBuilderType {
-	case "dummy":
-		svc = txbuilderdummy.NewTxBuilder(c.wallet, net)
 	case "covenant":
 		svc = txbuilder.NewTxBuilder(c.wallet, net, c.RoundLifetime, c.ExitDelay)
 	default:
diff --git a/server/internal/core/application/service.go b/server/internal/core/application/service.go
index 99342b7..3f1eb97 100644
--- a/server/internal/core/application/service.go
+++ b/server/internal/core/application/service.go
@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/ark-network/ark/common"
+	"github.com/ark-network/ark/common/tree"
 	"github.com/ark-network/ark/internal/core/domain"
 	"github.com/ark-network/ark/internal/core/ports"
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
@@ -20,10 +21,6 @@ import (
 var (
 	paymentsThreshold = int64(128)
 	dustAmount        = uint64(450)
-	faucetVtxo        = domain.VtxoKey{
-		Txid: "0000000000000000000000000000000000000000000000000000000000000000",
-		VOut: 0,
-	}
 )
 
 type Service interface {
@@ -32,12 +29,12 @@ type Service interface {
 	SpendVtxos(ctx context.Context, inputs []domain.VtxoKey) (string, error)
 	ClaimVtxos(ctx context.Context, creds string, receivers []domain.Receiver) error
 	SignVtxos(ctx context.Context, forfeitTxs []string) error
-	FaucetVtxos(ctx context.Context, pubkey *secp256k1.PublicKey) error
 	GetRoundByTxid(ctx context.Context, poolTxid string) (*domain.Round, error)
 	GetEventsChannel(ctx context.Context) <-chan domain.RoundEvent
 	UpdatePaymentStatus(ctx context.Context, id string) error
 	ListVtxos(ctx context.Context, pubkey *secp256k1.PublicKey) ([]domain.Vtxo, error)
 	GetInfo(ctx context.Context) (string, int64, int64, error)
+	Onboard(ctx context.Context, boardingTx string, congestionTree tree.CongestionTree, userPubkey *secp256k1.PublicKey) error
 }
 
 type service struct {
@@ -88,8 +85,9 @@ func NewService(
 	}
 	repoManager.RegisterEventsHandler(
 		func(round *domain.Round) {
-			svc.updateProjectionStore(round)
-			svc.propagateEvents(round)
+			go svc.updateVtxoSet(round)
+			go svc.propagateEvents(round)
+			go svc.scheduleSweepVtxosForRound(round)
 		},
 	)
 
@@ -165,43 +163,6 @@ func (s *service) UpdatePaymentStatus(_ context.Context, id string) error {
 	return s.paymentRequests.updatePingTimestamp(id)
 }
 
-func (s *service) FaucetVtxos(ctx context.Context, userPubkey *secp256k1.PublicKey) error {
-	pubkey := hex.EncodeToString(userPubkey.SerializeCompressed())
-
-	payment, err := domain.NewPayment([]domain.Vtxo{
-		{
-			VtxoKey: faucetVtxo,
-			Receiver: domain.Receiver{
-				Pubkey: pubkey,
-				Amount: 10000,
-			},
-		},
-	})
-	if err != nil {
-		return err
-	}
-
-	if err := payment.AddReceivers([]domain.Receiver{
-		{Pubkey: pubkey, Amount: 1000},
-		{Pubkey: pubkey, Amount: 1000},
-		{Pubkey: pubkey, Amount: 1000},
-		{Pubkey: pubkey, Amount: 1000},
-		{Pubkey: pubkey, Amount: 1000},
-		{Pubkey: pubkey, Amount: 1000},
-		{Pubkey: pubkey, Amount: 1000},
-		{Pubkey: pubkey, Amount: 1000},
-		{Pubkey: pubkey, Amount: 1000},
-		{Pubkey: pubkey, Amount: 1000},
-	}); err != nil {
-		return err
-	}
-
-	if err := s.paymentRequests.push(*payment); err != nil {
-		return err
-	}
-	return s.paymentRequests.updatePingTimestamp(payment.Id)
-}
-
 func (s *service) SignVtxos(ctx context.Context, forfeitTxs []string) error {
 	return s.forfeitTxs.sign(forfeitTxs)
 }
@@ -223,6 +184,40 @@ func (s *service) GetInfo(ctx context.Context) (string, int64, int64, error) {
 	return hex.EncodeToString(s.pubkey.SerializeCompressed()), s.roundLifetime, s.exitDelay, nil
 }
 
+func (s *service) Onboard(
+	ctx context.Context, boardingTx string,
+	congestionTree tree.CongestionTree, userPubkey *secp256k1.PublicKey,
+) error {
+	if err := tree.ValidateCongestionTree(
+		congestionTree, boardingTx, s.pubkey, s.roundLifetime,
+	); err != nil {
+		return err
+	}
+	ptx, err := psetv2.NewPsetFromBase64(boardingTx)
+	if err != nil {
+		return fmt.Errorf("failed to parse boarding tx: %s", err)
+	}
+
+	utx, _ := ptx.UnsignedTx()
+	txid := utx.TxHash().String()
+
+	isConfirmed, _, err := s.wallet.IsTransactionConfirmed(ctx, txid)
+	if err != nil {
+		return fmt.Errorf("failed to fetch confirmation info for boaridng tx: %s", err)
+	}
+	if !isConfirmed {
+		return fmt.Errorf("boarding tx not confirmed yet, please retry later")
+	}
+
+	pubkey := hex.EncodeToString(userPubkey.SerializeCompressed())
+	payments := getPaymentsFromOnboarding(congestionTree, pubkey)
+	round := domain.NewFinalizedRound(
+		dustAmount, pubkey, txid, boardingTx, congestionTree, payments,
+	)
+
+	return s.saveEvents(ctx, round.Id, round.Events())
+}
+
 func (s *service) start() {
 	s.startRound()
 }
@@ -365,15 +360,6 @@ func (s *service) finalizeRound() {
 		return
 	}
 
-	now := time.Now().Unix()
-	expirationTimestamp := now + s.roundLifetime + 30 // add 30 secs to be sure that the tx is confirmed
-
-	if err := s.sweeper.schedule(expirationTimestamp, txid, round.CongestionTree); err != nil {
-		changes = round.Fail(fmt.Errorf("failed to schedule sweep tx: %s", err))
-		log.WithError(err).Warn("failed to schedule sweep tx")
-		return
-	}
-
 	changes, _ = round.EndFinalization(forfeitTxs, txid)
 
 	log.Debugf("finalized round %s with pool tx %s", round.Id, round.Txid)
@@ -403,49 +389,50 @@ func (s *service) listenToRedemptions() {
 	}
 }
 
-func (s *service) updateProjectionStore(round *domain.Round) {
-	ctx := context.Background()
-	lastChange := round.Events()[len(round.Events())-1]
+func (s *service) updateVtxoSet(round *domain.Round) {
 	// Update the vtxo set only after a round is finalized.
-	if _, ok := lastChange.(domain.RoundFinalized); ok {
-		repo := s.repoManager.Vtxos()
-		spentVtxos := getSpentVtxos(round.Payments)
-		if len(spentVtxos) > 0 {
-			for {
-				if err := repo.SpendVtxos(ctx, spentVtxos); err != nil {
-					log.WithError(err).Warn("failed to add new vtxos, retrying soon")
-					time.Sleep(100 * time.Millisecond)
-					continue
-				}
-				log.Debugf("spent %d vtxos", len(spentVtxos))
-				break
-			}
-		}
+	if !round.IsEnded() {
+		return
+	}
 
-		newVtxos := s.getNewVtxos(round)
+	ctx := context.Background()
+	repo := s.repoManager.Vtxos()
+	spentVtxos := getSpentVtxos(round.Payments)
+	if len(spentVtxos) > 0 {
 		for {
-			if err := repo.AddVtxos(ctx, newVtxos); err != nil {
+			if err := repo.SpendVtxos(ctx, spentVtxos); err != nil {
 				log.WithError(err).Warn("failed to add new vtxos, retrying soon")
 				time.Sleep(100 * time.Millisecond)
 				continue
 			}
-			log.Debugf("added %d new vtxos", len(newVtxos))
+			log.Debugf("spent %d vtxos", len(spentVtxos))
 			break
 		}
-
-		go func() {
-			for {
-				if err := s.startWatchingVtxos(newVtxos); err != nil {
-					log.WithError(err).Warn(
-						"failed to start watching vtxos, retrying in a moment...",
-					)
-					continue
-				}
-				log.Debugf("started watching %d vtxos", len(newVtxos))
-				return
-			}
-		}()
 	}
+
+	newVtxos := s.getNewVtxos(round)
+	for {
+		if err := repo.AddVtxos(ctx, newVtxos); err != nil {
+			log.WithError(err).Warn("failed to add new vtxos, retrying soon")
+			time.Sleep(100 * time.Millisecond)
+			continue
+		}
+		log.Debugf("added %d new vtxos", len(newVtxos))
+		break
+	}
+
+	go func() {
+		for {
+			if err := s.startWatchingVtxos(newVtxos); err != nil {
+				log.WithError(err).Warn(
+					"failed to start watching vtxos, retrying in a moment...",
+				)
+				continue
+			}
+			log.Debugf("started watching %d vtxos", len(newVtxos))
+			return
+		}
+	}()
 }
 
 func (s *service) propagateEvents(round *domain.Round) {
@@ -465,6 +452,23 @@ func (s *service) propagateEvents(round *domain.Round) {
 	}
 }
 
+func (s *service) scheduleSweepVtxosForRound(round *domain.Round) {
+	// Schedule the sweeping procedure only for completed round.
+	if !round.IsEnded() {
+		return
+	}
+
+	expirationTimestamp := time.Now().Add(
+		time.Duration(s.roundLifetime+30) * time.Second,
+	)
+
+	if err := s.sweeper.schedule(
+		expirationTimestamp.Unix(), round.Txid, round.CongestionTree,
+	); err != nil {
+		log.WithError(err).Warn("failed to schedule sweep tx")
+	}
+}
+
 func (s *service) getNewVtxos(round *domain.Round) []domain.Vtxo {
 	leaves := round.CongestionTree.Leaves()
 	vtxos := make([]domain.Vtxo, 0)
@@ -590,11 +594,25 @@ func getSpentVtxos(payments map[string]domain.Payment) []domain.VtxoKey {
 	vtxos := make([]domain.VtxoKey, 0)
 	for _, p := range payments {
 		for _, vtxo := range p.Inputs {
-			if vtxo.VtxoKey == faucetVtxo {
-				continue
-			}
 			vtxos = append(vtxos, vtxo.VtxoKey)
 		}
 	}
 	return vtxos
 }
+
+func getPaymentsFromOnboarding(
+	congestionTree tree.CongestionTree, userKey string,
+) []domain.Payment {
+	leaves := congestionTree.Leaves()
+	receivers := make([]domain.Receiver, 0, len(leaves))
+	for _, node := range leaves {
+		ptx, _ := psetv2.NewPsetFromBase64(node.Tx)
+		receiver := domain.Receiver{
+			Pubkey: userKey,
+			Amount: ptx.Outputs[0].Value,
+		}
+		receivers = append(receivers, receiver)
+	}
+	payment := domain.NewPaymentUnsafe(nil, receivers)
+	return []domain.Payment{*payment}
+}
diff --git a/server/internal/core/application/sweeper.go b/server/internal/core/application/sweeper.go
index 1ac1f3a..7165743 100644
--- a/server/internal/core/application/sweeper.go
+++ b/server/internal/core/application/sweeper.go
@@ -82,7 +82,7 @@ func (s *sweeper) schedule(
 
 	task := s.createTask(roundTxid, congestionTree)
 	fancyTime := time.Unix(expirationTimestamp, 0).Format("2006-01-02 15:04:05")
-	log.Debugf("scheduled sweep task at %s", fancyTime)
+	log.Debugf("scheduled sweep for round %s at %s", roundTxid, fancyTime)
 	if err := s.scheduler.ScheduleTaskOnce(expirationTimestamp, task); err != nil {
 		return err
 	}
@@ -290,7 +290,7 @@ func (s *sweeper) findSweepableOutputs(
 		newNodesToCheck := make([]tree.Node, 0)
 
 		for _, node := range nodesToCheck {
-			isPublished, blocktime, err := s.wallet.IsTransactionPublished(ctx, node.Txid)
+			isConfirmed, blocktime, err := s.wallet.IsTransactionConfirmed(ctx, node.Txid)
 			if err != nil {
 				return nil, err
 			}
@@ -298,10 +298,10 @@ func (s *sweeper) findSweepableOutputs(
 			var expirationTime int64
 			var sweepInputs []ports.SweepInput
 
-			if !isPublished {
+			if !isConfirmed {
 				if _, ok := blocktimeCache[node.ParentTxid]; !ok {
-					isPublished, blocktime, err := s.wallet.IsTransactionPublished(ctx, node.ParentTxid)
-					if !isPublished || err != nil {
+					isConfirmed, blocktime, err := s.wallet.IsTransactionConfirmed(ctx, node.ParentTxid)
+					if !isConfirmed || err != nil {
 						return nil, fmt.Errorf("tx %s not found", node.Txid)
 					}
 
diff --git a/server/internal/core/application/utils.go b/server/internal/core/application/utils.go
index d6575c2..b421a39 100644
--- a/server/internal/core/application/utils.go
+++ b/server/internal/core/application/utils.go
@@ -1,8 +1,6 @@
 package application
 
 import (
-	"bytes"
-	"encoding/hex"
 	"fmt"
 	"sort"
 	"sync"
@@ -154,23 +152,13 @@ func (m *forfeitTxsMap) push(txs []string) {
 	m.lock.Lock()
 	defer m.lock.Unlock()
 
-	faucetTxID, _ := hex.DecodeString(faucetVtxo.Txid)
-
 	for _, tx := range txs {
 		ptx, _ := psetv2.NewPsetFromBase64(tx)
 		utx, _ := ptx.UnsignedTx()
-
+		txid := utx.TxHash().String()
 		signed := false
 
-		// find the faucet vtxos, and mark them as signed
-		for _, input := range ptx.Inputs {
-			if bytes.Equal(input.PreviousTxid, faucetTxID) {
-				signed = true
-				break
-			}
-		}
-
-		m.forfeitTxs[utx.TxHash().String()] = &signedTx{tx, signed}
+		m.forfeitTxs[txid] = &signedTx{tx, signed}
 	}
 }
 
diff --git a/server/internal/core/domain/payment.go b/server/internal/core/domain/payment.go
index b8c3207..71b4cd8 100644
--- a/server/internal/core/domain/payment.go
+++ b/server/internal/core/domain/payment.go
@@ -28,6 +28,14 @@ func NewPayment(inputs []Vtxo) (*Payment, error) {
 	return p, nil
 }
 
+func NewPaymentUnsafe(inputs []Vtxo, receivers []Receiver) *Payment {
+	return &Payment{
+		Id:        uuid.New().String(),
+		Inputs:    inputs,
+		Receivers: receivers,
+	}
+}
+
 func (p *Payment) AddReceivers(receivers []Receiver) (err error) {
 	if p.Receivers == nil {
 		p.Receivers = make([]Receiver, 0)
diff --git a/server/internal/core/domain/round.go b/server/internal/core/domain/round.go
index ca64634..87ae6a1 100644
--- a/server/internal/core/domain/round.go
+++ b/server/internal/core/domain/round.go
@@ -59,6 +59,39 @@ func NewRound(dustAmount uint64) *Round {
 	}
 }
 
+func NewFinalizedRound(
+	dustAmount uint64, userKey, poolTxid, poolTx string,
+	congestionTree tree.CongestionTree, payments []Payment,
+) *Round {
+	r := NewRound(dustAmount)
+	events := []RoundEvent{
+		RoundStarted{
+			Id:        r.Id,
+			Timestamp: time.Now().Unix(),
+		},
+		PaymentsRegistered{
+			Id:       r.Id,
+			Payments: payments,
+		},
+		RoundFinalizationStarted{
+			Id:             r.Id,
+			CongestionTree: congestionTree,
+			PoolTx:         poolTx,
+		},
+		RoundFinalized{
+			Id:        r.Id,
+			Txid:      poolTxid,
+			Timestamp: time.Now().Unix(),
+		},
+	}
+
+	for _, event := range events {
+		r.raise(event)
+	}
+
+	return r
+}
+
 func NewRoundFromEvents(events []RoundEvent) *Round {
 	r := &Round{}
 
diff --git a/server/internal/core/ports/wallet.go b/server/internal/core/ports/wallet.go
index baa15b2..3963055 100644
--- a/server/internal/core/ports/wallet.go
+++ b/server/internal/core/ports/wallet.go
@@ -17,7 +17,7 @@ type WalletService interface {
 	SelectUtxos(ctx context.Context, asset string, amount uint64) ([]TxInput, uint64, error)
 	BroadcastTransaction(ctx context.Context, txHex string) (string, error)
 	SignPsetWithKey(ctx context.Context, pset string, inputIndexes []int) (string, error) // inputIndexes == nil means sign all inputs
-	IsTransactionPublished(ctx context.Context, txid string) (isPublished bool, blocktime int64, err error)
+	IsTransactionConfirmed(ctx context.Context, txid string) (isConfirmed bool, blocktime int64, err error)
 	EstimateFees(ctx context.Context, pset string) (uint64, error)
 	Close()
 }
diff --git a/server/internal/infrastructure/ocean-wallet/transaction.go b/server/internal/infrastructure/ocean-wallet/transaction.go
index c644e3e..bfafb51 100644
--- a/server/internal/infrastructure/ocean-wallet/transaction.go
+++ b/server/internal/infrastructure/ocean-wallet/transaction.go
@@ -117,7 +117,7 @@ func (s *service) BroadcastTransaction(
 	return res.GetTxid(), nil
 }
 
-func (s *service) IsTransactionPublished(
+func (s *service) IsTransactionConfirmed(
 	ctx context.Context, txid string,
 ) (bool, int64, error) {
 	_, blocktime, err := s.GetTransaction(ctx, txid)
diff --git a/server/internal/infrastructure/tx-builder/covenant/builder.go b/server/internal/infrastructure/tx-builder/covenant/builder.go
index f5f6e9c..6534021 100644
--- a/server/internal/infrastructure/tx-builder/covenant/builder.go
+++ b/server/internal/infrastructure/tx-builder/covenant/builder.go
@@ -113,8 +113,8 @@ func (b *txBuilder) BuildPoolTx(
 	// generated in the process and takes the shared utxo outpoint as argument.
 	// This is safe as the memory allocated for `craftCongestionTree` is freed
 	// only after `BuildPoolTx` returns.
-	treeFactoryFn, sharedOutputScript, sharedOutputAmount, err := craftCongestionTree(
-		b.net.AssetID, aspPubkey, payments, minRelayFee, b.roundLifetime, b.exitDelay,
+	treeFactoryFn, sharedOutputScript, sharedOutputAmount, err := tree.CraftCongestionTree(
+		b.net.AssetID, aspPubkey, getOffchainReceivers(payments), minRelayFee, b.roundLifetime, b.exitDelay,
 	)
 	if err != nil {
 		return
diff --git a/server/internal/infrastructure/tx-builder/covenant/mocks_test.go b/server/internal/infrastructure/tx-builder/covenant/mocks_test.go
index 574d251..9c38874 100644
--- a/server/internal/infrastructure/tx-builder/covenant/mocks_test.go
+++ b/server/internal/infrastructure/tx-builder/covenant/mocks_test.go
@@ -97,7 +97,7 @@ func (m *mockedWallet) EstimateFees(ctx context.Context, pset string) (uint64, e
 	return res, args.Error(1)
 }
 
-func (m *mockedWallet) IsTransactionPublished(ctx context.Context, txid string) (bool, int64, error) {
+func (m *mockedWallet) IsTransactionConfirmed(ctx context.Context, txid string) (bool, int64, error) {
 	args := m.Called(ctx, txid)
 
 	var res bool
diff --git a/server/internal/infrastructure/tx-builder/covenant/utils.go b/server/internal/infrastructure/tx-builder/covenant/utils.go
index 07e805e..3bbcbde 100644
--- a/server/internal/infrastructure/tx-builder/covenant/utils.go
+++ b/server/internal/infrastructure/tx-builder/covenant/utils.go
@@ -4,6 +4,7 @@ import (
 	"encoding/hex"
 	"fmt"
 
+	"github.com/ark-network/ark/common/tree"
 	"github.com/ark-network/ark/internal/core/domain"
 	"github.com/ark-network/ark/internal/core/ports"
 	"github.com/btcsuite/btcd/btcec/v2/schnorr"
@@ -14,7 +15,6 @@ import (
 	"github.com/vulpemventures/go-elements/network"
 	"github.com/vulpemventures/go-elements/payment"
 	"github.com/vulpemventures/go-elements/psetv2"
-	"github.com/vulpemventures/go-elements/taproot"
 	"github.com/vulpemventures/go-elements/transaction"
 )
 
@@ -62,12 +62,15 @@ func getOnchainReceivers(
 
 func getOffchainReceivers(
 	payments []domain.Payment,
-) []domain.Receiver {
-	receivers := make([]domain.Receiver, 0)
+) []tree.Receiver {
+	receivers := make([]tree.Receiver, 0)
 	for _, payment := range payments {
 		for _, receiver := range payment.Receivers {
 			if !receiver.IsOnchain() {
-				receivers = append(receivers, receiver)
+				receivers = append(receivers, tree.Receiver{
+					Pubkey: receiver.Pubkey,
+					Amount: receiver.Amount,
+				})
 			}
 		}
 	}
@@ -133,35 +136,6 @@ func addInputs(
 	return nil
 }
 
-// wrapper of updater methods adding a taproot input to the pset with all the necessary data to spend it via any taproot script
-func addTaprootInput(
-	updater *psetv2.Updater,
-	input psetv2.InputArgs,
-	internalTaprootKey *secp256k1.PublicKey,
-	taprootTree *taproot.IndexedElementsTapScriptTree,
-) error {
-	if err := updater.AddInputs([]psetv2.InputArgs{input}); err != nil {
-		return err
-	}
-
-	if err := updater.AddInTapInternalKey(0, schnorr.SerializePubKey(internalTaprootKey)); err != nil {
-		return err
-	}
-
-	for _, proof := range taprootTree.LeafMerkleProofs {
-		controlBlock := proof.ToControlBlock(internalTaprootKey)
-
-		if err := updater.AddInTapLeafScript(0, psetv2.TapLeafScript{
-			TapElementsLeaf: taproot.NewBaseTapElementsLeaf(proof.Script),
-			ControlBlock:    controlBlock,
-		}); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
 func taprootOutputScript(taprootKey *secp256k1.PublicKey) ([]byte, error) {
 	return txscript.NewScriptBuilder().AddOp(txscript.OP_1).AddData(schnorr.SerializePubKey(taprootKey)).Script()
 }
diff --git a/server/internal/infrastructure/tx-builder/dummy/builder.go b/server/internal/infrastructure/tx-builder/dummy/builder.go
deleted file mode 100644
index 59a98b1..0000000
--- a/server/internal/infrastructure/tx-builder/dummy/builder.go
+++ /dev/null
@@ -1,285 +0,0 @@
-package txbuilder
-
-import (
-	"context"
-
-	"github.com/ark-network/ark/common/tree"
-	"github.com/ark-network/ark/internal/core/domain"
-	"github.com/ark-network/ark/internal/core/ports"
-	"github.com/decred/dcrd/dcrec/secp256k1/v4"
-	"github.com/vulpemventures/go-elements/address"
-	"github.com/vulpemventures/go-elements/network"
-	"github.com/vulpemventures/go-elements/payment"
-	"github.com/vulpemventures/go-elements/psetv2"
-	"github.com/vulpemventures/go-elements/transaction"
-)
-
-const (
-	connectorAmount = 450
-	sevenDays       = 7 * 24 * 60 * 60
-)
-
-type txBuilder struct {
-	wallet ports.WalletService
-	net    network.Network
-}
-
-func NewTxBuilder(
-	wallet ports.WalletService, net network.Network,
-) ports.TxBuilder {
-	return &txBuilder{wallet, net}
-}
-
-// BuildSweepTx implements ports.TxBuilder.
-func (*txBuilder) BuildSweepTx(wallet ports.WalletService, inputs []ports.SweepInput) (signedSweepTx string, err error) {
-	panic("unimplemented")
-}
-
-// BuildForfeitTxs implements ports.TxBuilder.
-func (b *txBuilder) BuildForfeitTxs(
-	aspPubkey *secp256k1.PublicKey, poolTx string, payments []domain.Payment,
-) (connectors []string, forfeitTxs []string, err error) {
-	poolTxID, err := getTxid(poolTx)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	aspScript, err := p2wpkhScript(aspPubkey, b.net)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	numberOfConnectors := countSpentVtxos(payments)
-
-	connectors, err = createConnectors(
-		poolTxID,
-		1,
-		psetv2.OutputArgs{
-			Asset:  b.net.AssetID,
-			Amount: connectorAmount,
-			Script: aspScript,
-		},
-		aspScript,
-		numberOfConnectors,
-	)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	connectorsAsInputs, err := connectorsToInputArgs(connectors)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	forfeitTxs = make([]string, 0)
-	for _, payment := range payments {
-		for _, vtxo := range payment.Inputs {
-			for _, connector := range connectorsAsInputs {
-				forfeitTx, err := createForfeitTx(
-					connector,
-					psetv2.InputArgs{
-						Txid:    vtxo.Txid,
-						TxIndex: vtxo.VOut,
-					},
-					vtxo.Amount,
-					aspScript,
-					b.net,
-				)
-				if err != nil {
-					return nil, nil, err
-				}
-
-				forfeitTxs = append(forfeitTxs, forfeitTx)
-			}
-		}
-	}
-
-	return connectors, forfeitTxs, nil
-}
-
-// BuildPoolTx implements ports.TxBuilder.
-func (b *txBuilder) BuildPoolTx(
-	aspPubkey *secp256k1.PublicKey, payments []domain.Payment, minRelayFee uint64,
-) (poolTx string, congestionTree tree.CongestionTree, err error) {
-	aspScriptBytes, err := p2wpkhScript(aspPubkey, b.net)
-	if err != nil {
-		return "", nil, err
-	}
-
-	offchainReceivers, onchainReceivers := receiversFromPayments(payments)
-	sharedOutputAmount := sumReceivers(offchainReceivers)
-
-	numberOfConnectors := countSpentVtxos(payments)
-	connectorOutputAmount := connectorAmount * numberOfConnectors
-
-	ctx := context.Background()
-
-	outputs := []psetv2.OutputArgs{
-		{
-			Asset:  b.net.AssetID,
-			Amount: sharedOutputAmount,
-			Script: aspScriptBytes,
-		},
-		{
-			Asset:  b.net.AssetID,
-			Amount: connectorOutputAmount,
-			Script: aspScriptBytes,
-		},
-	}
-
-	amountToSelect := sharedOutputAmount + connectorOutputAmount
-
-	for _, receiver := range onchainReceivers {
-		amountToSelect += receiver.Amount
-
-		receiverScript, err := address.ToOutputScript(receiver.OnchainAddress)
-		if err != nil {
-			return "", nil, err
-		}
-
-		outputs = append(outputs, psetv2.OutputArgs{
-			Asset:  b.net.AssetID,
-			Amount: receiver.Amount,
-			Script: receiverScript,
-		})
-	}
-
-	utxos, change, err := b.wallet.SelectUtxos(ctx, b.net.AssetID, amountToSelect)
-	if err != nil {
-		return
-	}
-
-	if change > 0 {
-		outputs = append(outputs, psetv2.OutputArgs{
-			Asset:  b.net.AssetID,
-			Amount: change,
-			Script: aspScriptBytes,
-		})
-	}
-
-	ptx, err := psetv2.New(toInputArgs(utxos), outputs, nil)
-	if err != nil {
-		return
-	}
-
-	utx, err := ptx.UnsignedTx()
-	if err != nil {
-		return
-	}
-
-	congestionTree, err = buildCongestionTree(
-		newOutputScriptFactory(aspPubkey, b.net),
-		b.net,
-		utx.TxHash().String(),
-		offchainReceivers,
-	)
-	if err != nil {
-		return
-	}
-
-	poolTx, err = ptx.ToBase64()
-	if err != nil {
-		return
-	}
-
-	return poolTx, congestionTree, err
-}
-
-func (b *txBuilder) GetVtxoScript(userPubkey, _ *secp256k1.PublicKey) ([]byte, error) {
-	p2wpkh := payment.FromPublicKey(userPubkey, &b.net, nil)
-	addr, _ := p2wpkh.WitnessPubKeyHash()
-	return address.ToOutputScript(addr)
-}
-
-func (b *txBuilder) GetLeafSweepClosure(
-	node tree.Node, userPubKey *secp256k1.PublicKey,
-) (*psetv2.TapLeafScript, int64, error) {
-	panic("unimplemented")
-}
-
-func connectorsToInputArgs(connectors []string) ([]psetv2.InputArgs, error) {
-	inputs := make([]psetv2.InputArgs, 0, len(connectors)+1)
-	for i, psetb64 := range connectors {
-		tx, err := psetv2.NewPsetFromBase64(psetb64)
-		if err != nil {
-			return nil, err
-		}
-		utx, err := tx.UnsignedTx()
-		if err != nil {
-			return nil, err
-		}
-		txid := utx.TxHash().String()
-		for j := range tx.Outputs {
-			inputs = append(inputs, psetv2.InputArgs{
-				Txid:    txid,
-				TxIndex: uint32(j),
-			})
-			if i != len(connectors)-1 {
-				break
-			}
-		}
-	}
-	return inputs, nil
-}
-
-func getTxid(txStr string) (string, error) {
-	pset, err := psetv2.NewPsetFromBase64(txStr)
-	if err != nil {
-		tx, err := transaction.NewTxFromHex(txStr)
-		if err != nil {
-			return "", err
-		}
-		return tx.TxHash().String(), nil
-	}
-
-	utx, err := pset.UnsignedTx()
-	if err != nil {
-		return "", err
-	}
-
-	return utx.TxHash().String(), nil
-}
-
-func countSpentVtxos(payments []domain.Payment) uint64 {
-	var sum uint64
-	for _, payment := range payments {
-		sum += uint64(len(payment.Inputs))
-	}
-	return sum
-}
-
-func receiversFromPayments(
-	payments []domain.Payment,
-) (offchainReceivers, onchainReceivers []domain.Receiver) {
-	for _, payment := range payments {
-		for _, receiver := range payment.Receivers {
-			if receiver.IsOnchain() {
-				onchainReceivers = append(onchainReceivers, receiver)
-			} else {
-				offchainReceivers = append(offchainReceivers, receiver)
-			}
-		}
-	}
-	return
-}
-
-func sumReceivers(receivers []domain.Receiver) uint64 {
-	var sum uint64
-	for _, r := range receivers {
-		sum += r.Amount
-	}
-	return sum
-}
-
-func toInputArgs(
-	ins []ports.TxInput,
-) []psetv2.InputArgs {
-	inputs := make([]psetv2.InputArgs, 0, len(ins))
-	for _, in := range ins {
-		inputs = append(inputs, psetv2.InputArgs{
-			Txid:    in.GetTxid(),
-			TxIndex: in.GetIndex(),
-		})
-	}
-	return inputs
-}
diff --git a/server/internal/infrastructure/tx-builder/dummy/builder_test.go b/server/internal/infrastructure/tx-builder/dummy/builder_test.go
deleted file mode 100644
index 3de9074..0000000
--- a/server/internal/infrastructure/tx-builder/dummy/builder_test.go
+++ /dev/null
@@ -1,403 +0,0 @@
-package txbuilder_test
-
-import (
-	"context"
-	"crypto/rand"
-	"encoding/hex"
-	"testing"
-
-	"github.com/ark-network/ark/internal/core/domain"
-	"github.com/ark-network/ark/internal/core/ports"
-	txbuilder "github.com/ark-network/ark/internal/infrastructure/tx-builder/dummy"
-	"github.com/btcsuite/btcd/chaincfg/chainhash"
-	secp256k1 "github.com/decred/dcrd/dcrec/secp256k1/v4"
-	"github.com/stretchr/testify/require"
-	"github.com/vulpemventures/go-elements/network"
-	"github.com/vulpemventures/go-elements/psetv2"
-)
-
-const (
-	testingKey = "0218d5ca8b58797b7dbd65c075dd7ba7784b3f38ab71b1a5a8e3f94ba0257654a6"
-	fakePoolTx = "cHNldP8BAgQCAAAAAQQBAQEFAQMBBgEDAfsEAgAAAAABDiDk7dXxh4KQzgLO8i1ABtaLCe4aPL12GVhN1E9zM1ePLwEPBAAAAAABEAT/////AAEDCOgDAAAAAAAAAQQWABSNnpy01UJqd99eTg2M1IpdKId11gf8BHBzZXQCICWyUQcOKcoZBDzzPM1zJOLdqwPsxK4LXnfE/A5c9slaB/wEcHNldAgEAAAAAAABAwh4BQAAAAAAAAEEFgAUjZ6ctNVCanffXk4NjNSKXSiHddYH/ARwc2V0AiAlslEHDinKGQQ88zzNcyTi3asD7MSuC153xPwOXPbJWgf8BHBzZXQIBAAAAAAAAQMI9AEAAAAAAAABBAAH/ARwc2V0AiAlslEHDinKGQQ88zzNcyTi3asD7MSuC153xPwOXPbJWgf8BHBzZXQIBAAAAAAA"
-)
-
-type input struct {
-	txid string
-	vout uint32
-}
-
-func (i *input) GetTxid() string {
-	return i.txid
-}
-
-func (i *input) GetIndex() uint32 {
-	return i.vout
-}
-
-func (i *input) GetScript() string {
-	return "a914ea9f486e82efb3dd83a69fd96e3f0113757da03c87"
-}
-
-func (i *input) GetAsset() string {
-	return "5ac9f65c0efcc4775e0baec4ec03abdde22473cd3cf33c0419ca290e0751b225"
-}
-
-func (i *input) GetValue() uint64 {
-	return 1000
-}
-
-type mockedWalletService struct{}
-
-// BroadcastTransaction implements ports.WalletService.
-func (*mockedWalletService) BroadcastTransaction(ctx context.Context, txHex string) (string, error) {
-	panic("unimplemented")
-}
-
-// Close implements ports.WalletService.
-func (*mockedWalletService) Close() {
-	panic("unimplemented")
-}
-
-// DeriveAddresses implements ports.WalletService.
-func (*mockedWalletService) DeriveAddresses(ctx context.Context, num int) ([]string, error) {
-	panic("unimplemented")
-}
-
-// GetPubkey implements ports.WalletService.
-func (*mockedWalletService) GetPubkey(ctx context.Context) (*secp256k1.PublicKey, error) {
-	panic("unimplemented")
-}
-
-// SignPset implements ports.WalletService.
-func (*mockedWalletService) SignPset(ctx context.Context, pset string, extractRawTx bool) (string, error) {
-	panic("unimplemented")
-}
-
-// Status implements ports.WalletService.
-func (*mockedWalletService) Status(ctx context.Context) (ports.WalletStatus, error) {
-	panic("unimplemented")
-}
-
-func (*mockedWalletService) WatchScripts(ctx context.Context, scripts []string) error {
-	panic("unimplemented")
-}
-
-func (*mockedWalletService) UnwatchScripts(ctx context.Context, scripts []string) error {
-	panic("unimplemented")
-}
-
-func (*mockedWalletService) GetNotificationChannel(ctx context.Context) chan []domain.VtxoKey {
-	panic("unimplemented")
-}
-
-func (*mockedWalletService) SelectUtxos(ctx context.Context, asset string, amount uint64) ([]ports.TxInput, uint64, error) {
-	// random txid
-	bytes := make([]byte, 32)
-	if _, err := rand.Read(bytes); err != nil {
-		return nil, 0, err
-	}
-	fakeInput := input{
-		txid: hex.EncodeToString(bytes),
-		vout: 0,
-	}
-
-	return []ports.TxInput{&fakeInput}, 0, nil
-}
-
-func (*mockedWalletService) EstimateFees(ctx context.Context, pset string) (uint64, error) {
-	return 100, nil
-}
-
-func (*mockedWalletService) SignPsetWithKey(ctx context.Context, pset string, inputIndex []int) (string, error) {
-	panic("unimplemented")
-}
-
-func (*mockedWalletService) IsTransactionPublished(ctx context.Context, txid string) (bool, int64, error) {
-	panic("unimplemented")
-}
-
-func TestBuildCongestionTree(t *testing.T) {
-	builder := txbuilder.NewTxBuilder(&mockedWalletService{}, network.Liquid)
-
-	fixtures := []struct {
-		payments          []domain.Payment
-		expectedNodesNum  int // 2*len(receivers)-1
-		expectedLeavesNum int
-	}{
-		{
-			payments: []domain.Payment{
-				{
-					Id: "0",
-					Inputs: []domain.Vtxo{
-						{
-							VtxoKey: domain.VtxoKey{
-								Txid: "fd68e3c5796cc7db0a8036d486d5f625b6b2f2c014810ac020e1ac23e82c59d6",
-								VOut: 0,
-							},
-							Receiver: domain.Receiver{
-								Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-								Amount: 600,
-							},
-						},
-					},
-					Receivers: []domain.Receiver{
-						{
-							Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-							Amount: 600,
-						},
-						{
-							Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-							Amount: 400,
-						},
-					},
-				},
-			},
-			expectedNodesNum:  3,
-			expectedLeavesNum: 2,
-		},
-		{
-			payments: []domain.Payment{
-				{
-					Id: "0",
-					Inputs: []domain.Vtxo{
-						{
-							VtxoKey: domain.VtxoKey{
-								Txid: "fd68e3c5796cc7db0a8036d486d5f625b6b2f2c014810ac020e1ac23e82c59d6",
-								VOut: 0,
-							},
-							Receiver: domain.Receiver{
-								Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-								Amount: 600,
-							},
-						},
-					},
-					Receivers: []domain.Receiver{
-						{
-							Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-							Amount: 600,
-						},
-						{
-							Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-							Amount: 400,
-						},
-					},
-				},
-				{
-					Id: "0",
-					Inputs: []domain.Vtxo{
-						{
-							VtxoKey: domain.VtxoKey{
-								Txid: "fd68e3c5796cc7db0a8036d486d5f625b6b2f2c014810ac020e1ac23e82c59d6",
-								VOut: 0,
-							},
-							Receiver: domain.Receiver{
-								Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-								Amount: 600,
-							},
-						},
-					},
-					Receivers: []domain.Receiver{
-						{
-							Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-							Amount: 600,
-						},
-						{
-							Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-							Amount: 400,
-						},
-					},
-				},
-				{
-					Id: "0",
-					Inputs: []domain.Vtxo{
-						{
-							VtxoKey: domain.VtxoKey{
-								Txid: "fd68e3c5796cc7db0a8036d486d5f625b6b2f2c014810ac020e1ac23e82c59d6",
-								VOut: 0,
-							},
-							Receiver: domain.Receiver{
-								Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-								Amount: 600,
-							},
-						},
-					},
-					Receivers: []domain.Receiver{
-						{
-							Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-							Amount: 600,
-						},
-						{
-							Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-							Amount: 400,
-						},
-					},
-				},
-			},
-			expectedNodesNum:  11,
-			expectedLeavesNum: 6,
-		},
-	}
-	pubkeyBytes, _ := hex.DecodeString(testingKey)
-	pubkey, _ := secp256k1.ParsePubKey(pubkeyBytes)
-
-	for _, f := range fixtures {
-		poolTx, tree, err := builder.BuildPoolTx(pubkey, f.payments, 30)
-
-		require.NoError(t, err)
-		require.Equal(t, f.expectedNodesNum, tree.NumberOfNodes())
-		require.Len(t, tree.Leaves(), f.expectedLeavesNum)
-
-		poolPset, err := psetv2.NewPsetFromBase64(poolTx)
-		require.NoError(t, err)
-
-		poolTxUnsigned, err := poolPset.UnsignedTx()
-		require.NoError(t, err)
-
-		poolTxID := poolTxUnsigned.TxHash().String()
-
-		// check the root
-		require.Len(t, tree[0], 1)
-		require.Equal(t, poolTxID, tree[0][0].ParentTxid)
-
-		// check the leaves
-		for _, leaf := range tree.Leaves() {
-			pset, err := psetv2.NewPsetFromBase64(leaf.Tx)
-			require.NoError(t, err)
-
-			require.Len(t, pset.Inputs, 1)
-			require.Len(t, pset.Outputs, 1)
-
-			inputTxID := chainhash.Hash(pset.Inputs[0].PreviousTxid).String()
-			require.Equal(t, leaf.ParentTxid, inputTxID)
-		}
-
-		// check the nodes
-		for _, level := range tree[:len(tree)-2] {
-			for _, node := range level {
-				pset, err := psetv2.NewPsetFromBase64(node.Tx)
-				require.NoError(t, err)
-
-				require.Len(t, pset.Inputs, 1)
-				require.Len(t, pset.Outputs, 2)
-
-				inputTxID := chainhash.Hash(pset.Inputs[0].PreviousTxid).String()
-				require.Equal(t, node.ParentTxid, inputTxID)
-
-				children := tree.Children(node.Txid)
-				require.Len(t, children, 2)
-			}
-		}
-	}
-}
-
-func TestBuildForfeitTxs(t *testing.T) {
-	builder := txbuilder.NewTxBuilder(&mockedWalletService{}, network.Liquid)
-
-	poolPset, err := psetv2.NewPsetFromBase64(fakePoolTx)
-	require.NoError(t, err)
-
-	poolTxUnsigned, err := poolPset.UnsignedTx()
-	require.NoError(t, err)
-
-	poolTxID := poolTxUnsigned.TxHash().String()
-
-	fixtures := []struct {
-		payments                []domain.Payment
-		expectedNumOfForfeitTxs int
-		expectedNumOfConnectors int
-	}{
-		{
-			payments: []domain.Payment{
-				{
-					Id: "0",
-					Inputs: []domain.Vtxo{
-						{
-							VtxoKey: domain.VtxoKey{
-								Txid: "fd68e3c5796cc7db0a8036d486d5f625b6b2f2c014810ac020e1ac23e82c59d6",
-								VOut: 0,
-							},
-							Receiver: domain.Receiver{
-								Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-								Amount: 600,
-							},
-						},
-						{
-							VtxoKey: domain.VtxoKey{
-								Txid: "fd68e3c5796cc7db0a8036d486d5f625b6b2f2c014810ac020e1ac23e82c59d6",
-								VOut: 1,
-							},
-							Receiver: domain.Receiver{
-								Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-								Amount: 400,
-							},
-						},
-					},
-					Receivers: []domain.Receiver{
-						{
-							Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-							Amount: 600,
-						},
-						{
-							Pubkey: "020000000000000000000000000000000000000000000000000000000000000002",
-							Amount: 400,
-						},
-					},
-				},
-			},
-			expectedNumOfForfeitTxs: 4,
-			expectedNumOfConnectors: 1,
-		},
-	}
-
-	pubkeyBytes, _ := hex.DecodeString(testingKey)
-	pubkey, _ := secp256k1.ParsePubKey(pubkeyBytes)
-
-	for _, f := range fixtures {
-		connectors, forfeitTxs, err := builder.BuildForfeitTxs(
-			pubkey, fakePoolTx, f.payments,
-		)
-		require.NoError(t, err)
-		require.Len(t, connectors, f.expectedNumOfConnectors)
-		require.Len(t, forfeitTxs, f.expectedNumOfForfeitTxs)
-
-		// decode and check connectors
-		connectorsPsets := make([]*psetv2.Pset, 0, f.expectedNumOfConnectors)
-		for _, pset := range connectors {
-			p, err := psetv2.NewPsetFromBase64(pset)
-			require.NoError(t, err)
-			connectorsPsets = append(connectorsPsets, p)
-		}
-
-		for i, pset := range connectorsPsets {
-			require.Len(t, pset.Inputs, 1)
-			require.Len(t, pset.Outputs, 2)
-
-			expectedInputTxid := poolTxID
-			expectedInputVout := uint32(1)
-			if i > 0 {
-				tx, err := connectorsPsets[i-1].UnsignedTx()
-				require.NoError(t, err)
-				require.NotNil(t, tx)
-				expectedInputTxid = tx.TxHash().String()
-			}
-
-			inputTxid := chainhash.Hash(pset.Inputs[0].PreviousTxid).String()
-			require.Equal(t, expectedInputTxid, inputTxid)
-			require.Equal(t, expectedInputVout, pset.Inputs[0].PreviousTxIndex)
-		}
-
-		// decode and check forfeit txs
-		forfeitTxsPsets := make([]*psetv2.Pset, 0, f.expectedNumOfForfeitTxs)
-		for _, pset := range forfeitTxs {
-			p, err := psetv2.NewPsetFromBase64(pset)
-			require.NoError(t, err)
-			forfeitTxsPsets = append(forfeitTxsPsets, p)
-		}
-
-		// each forfeit tx should have 2 inputs and 2 outputs
-		for _, pset := range forfeitTxsPsets {
-			require.Len(t, pset.Inputs, 2)
-			require.Len(t, pset.Outputs, 1)
-		}
-	}
-}
diff --git a/server/internal/infrastructure/tx-builder/dummy/connectors.go b/server/internal/infrastructure/tx-builder/dummy/connectors.go
deleted file mode 100644
index 8008295..0000000
--- a/server/internal/infrastructure/tx-builder/dummy/connectors.go
+++ /dev/null
@@ -1,103 +0,0 @@
-package txbuilder
-
-import (
-	"github.com/vulpemventures/go-elements/psetv2"
-)
-
-func createConnectors(
-	poolTxID string,
-	connectorOutputIndex uint32,
-	connectorOutput psetv2.OutputArgs,
-	changeScript []byte,
-	numberOfConnectors uint64,
-) (connectorsPsets []string, err error) {
-	previousInput := psetv2.InputArgs{
-		Txid:    poolTxID,
-		TxIndex: connectorOutputIndex,
-	}
-
-	if numberOfConnectors == 1 {
-		pset, err := psetv2.New(nil, nil, nil)
-		if err != nil {
-			return nil, err
-		}
-		updater, err := psetv2.NewUpdater(pset)
-		if err != nil {
-			return nil, err
-		}
-
-		err = updater.AddInputs([]psetv2.InputArgs{previousInput})
-		if err != nil {
-			return nil, err
-		}
-
-		err = updater.AddOutputs([]psetv2.OutputArgs{connectorOutput})
-		if err != nil {
-			return nil, err
-		}
-
-		base64, err := pset.ToBase64()
-		if err != nil {
-			return nil, err
-		}
-
-		return []string{base64}, nil
-	}
-
-	// compute the initial amount of the connectors output in pool transaction
-	remainingAmount := connectorAmount * numberOfConnectors
-
-	connectorsPset := make([]string, 0, numberOfConnectors-1)
-	for i := uint64(0); i < numberOfConnectors-1; i++ {
-		// create a new pset
-		pset, err := psetv2.New(nil, nil, nil)
-		if err != nil {
-			return nil, err
-		}
-
-		updater, err := psetv2.NewUpdater(pset)
-		if err != nil {
-			return nil, err
-		}
-
-		err = updater.AddInputs([]psetv2.InputArgs{previousInput})
-		if err != nil {
-			return nil, err
-		}
-
-		err = updater.AddOutputs([]psetv2.OutputArgs{connectorOutput})
-		if err != nil {
-			return nil, err
-		}
-
-		changeAmount := remainingAmount - connectorOutput.Amount
-		if changeAmount > 0 {
-			changeOutput := psetv2.OutputArgs{
-				Asset:  connectorOutput.Asset,
-				Amount: changeAmount,
-				Script: changeScript,
-			}
-			err = updater.AddOutputs([]psetv2.OutputArgs{changeOutput})
-			if err != nil {
-				return nil, err
-			}
-			tx, _ := pset.UnsignedTx()
-			txid := tx.TxHash().String()
-
-			// make the change the next previousInput
-			previousInput = psetv2.InputArgs{
-				Txid:    txid,
-				TxIndex: 1,
-			}
-		}
-
-		base64, err := pset.ToBase64()
-		if err != nil {
-			return nil, err
-		}
-
-		connectorsPset = append(connectorsPset, base64)
-	}
-
-	return connectorsPset, nil
-}
diff --git a/server/internal/infrastructure/tx-builder/dummy/forfeit.go b/server/internal/infrastructure/tx-builder/dummy/forfeit.go
deleted file mode 100644
index ff15c68..0000000
--- a/server/internal/infrastructure/tx-builder/dummy/forfeit.go
+++ /dev/null
@@ -1,42 +0,0 @@
-package txbuilder
-
-import (
-	"github.com/vulpemventures/go-elements/network"
-	"github.com/vulpemventures/go-elements/psetv2"
-)
-
-func createForfeitTx(
-	connectorInput psetv2.InputArgs,
-	vtxoInput psetv2.InputArgs,
-	vtxoAmount uint64,
-	aspScript []byte,
-	net network.Network,
-) (forfeitTx string, err error) {
-	pset, err := psetv2.New(nil, nil, nil)
-	if err != nil {
-		return "", err
-	}
-
-	updater, err := psetv2.NewUpdater(pset)
-	if err != nil {
-		return "", err
-	}
-
-	err = updater.AddInputs([]psetv2.InputArgs{connectorInput, vtxoInput})
-	if err != nil {
-		return "", err
-	}
-
-	err = updater.AddOutputs([]psetv2.OutputArgs{
-		{
-			Asset:  net.AssetID,
-			Amount: vtxoAmount,
-			Script: aspScript,
-		},
-	})
-	if err != nil {
-		return "", err
-	}
-
-	return pset.ToBase64()
-}
diff --git a/server/internal/infrastructure/tx-builder/dummy/tree.go b/server/internal/infrastructure/tx-builder/dummy/tree.go
deleted file mode 100644
index e1a1940..0000000
--- a/server/internal/infrastructure/tx-builder/dummy/tree.go
+++ /dev/null
@@ -1,309 +0,0 @@
-package txbuilder
-
-import (
-	"encoding/hex"
-
-	"github.com/ark-network/ark/common/tree"
-	"github.com/ark-network/ark/internal/core/domain"
-	"github.com/btcsuite/btcd/chaincfg/chainhash"
-	"github.com/decred/dcrd/dcrec/secp256k1/v4"
-	"github.com/vulpemventures/go-elements/address"
-	"github.com/vulpemventures/go-elements/network"
-	"github.com/vulpemventures/go-elements/payment"
-	"github.com/vulpemventures/go-elements/psetv2"
-)
-
-const (
-	sharedOutputIndex = 0
-)
-
-type outputScriptFactory func(leaves []domain.Receiver) ([]byte, error)
-
-func p2wpkhScript(publicKey *secp256k1.PublicKey, net network.Network) ([]byte, error) {
-	payment := payment.FromPublicKey(publicKey, &net, nil)
-	addr, err := payment.WitnessPubKeyHash()
-	if err != nil {
-		return nil, err
-	}
-
-	return address.ToOutputScript(addr)
-}
-
-// newOtputScriptFactory returns an output script factory func that lock funds using the ASP public key only on all branches psbt. The leaves are instead locked by the leaf public key.
-func newOutputScriptFactory(aspPublicKey *secp256k1.PublicKey, net network.Network) outputScriptFactory {
-	return func(leaves []domain.Receiver) ([]byte, error) {
-		aspScript, err := p2wpkhScript(aspPublicKey, net)
-		if err != nil {
-			return nil, err
-		}
-
-		switch len(leaves) {
-		case 0:
-			return nil, nil
-		case 1: // it's a leaf
-			buf, err := hex.DecodeString(leaves[0].Pubkey)
-			if err != nil {
-				return nil, err
-			}
-			key, err := secp256k1.ParsePubKey(buf)
-			if err != nil {
-				return nil, err
-			}
-
-			return p2wpkhScript(key, net)
-		default: // it's a branch, lock funds with ASP public key
-			return aspScript, nil
-		}
-	}
-}
-
-// congestionTree builder iteratively creates a binary tree of Pset from a set of receivers
-// it also expect createOutputScript func managing the output script creation and the network to use (mainly for L-BTC asset id)
-func buildCongestionTree(
-	createOutputScript outputScriptFactory,
-	net network.Network,
-	poolTxID string,
-	receivers []domain.Receiver,
-) (congestionTree tree.CongestionTree, err error) {
-	var nodes []*node
-
-	for _, r := range receivers {
-		nodes = append(nodes, newLeaf(createOutputScript, net, r))
-	}
-
-	for len(nodes) > 1 {
-		nodes, err = createTreeLevel(nodes)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	psets, err := nodes[0].psets(psetv2.InputArgs{
-		Txid:    poolTxID,
-		TxIndex: sharedOutputIndex,
-	}, 0)
-	if err != nil {
-		return nil, err
-	}
-
-	maxLevel := 0
-	for _, psetWithLevel := range psets {
-		if psetWithLevel.level > maxLevel {
-			maxLevel = psetWithLevel.level
-		}
-	}
-
-	congestionTree = make(tree.CongestionTree, maxLevel+1)
-
-	for _, psetWithLevel := range psets {
-		utx, err := psetWithLevel.pset.UnsignedTx()
-		if err != nil {
-			return nil, err
-		}
-
-		txid := utx.TxHash().String()
-
-		psetB64, err := psetWithLevel.pset.ToBase64()
-		if err != nil {
-			return nil, err
-		}
-
-		parentTxid := chainhash.Hash(psetWithLevel.pset.Inputs[0].PreviousTxid).String()
-
-		congestionTree[psetWithLevel.level] = append(congestionTree[psetWithLevel.level], tree.Node{
-			Txid:       txid,
-			Tx:         psetB64,
-			ParentTxid: parentTxid,
-			Leaf:       psetWithLevel.leaf,
-		})
-	}
-
-	return congestionTree, nil
-}
-
-func createTreeLevel(nodes []*node) ([]*node, error) {
-	if len(nodes)%2 != 0 {
-		last := nodes[len(nodes)-1]
-		pairs, err := createTreeLevel(nodes[:len(nodes)-1])
-		if err != nil {
-			return nil, err
-		}
-
-		return append(pairs, last), nil
-	}
-
-	pairs := make([]*node, 0, len(nodes)/2)
-	for i := 0; i < len(nodes); i += 2 {
-		pairs = append(pairs, newBranch(nodes[i], nodes[i+1]))
-	}
-	return pairs, nil
-}
-
-// internal struct to build a binary tree of Pset
-type node struct {
-	receivers          []domain.Receiver
-	left               *node
-	right              *node
-	createOutputScript outputScriptFactory
-	network            network.Network
-}
-
-// create a node from a single receiver
-func newLeaf(
-	createOutputScript outputScriptFactory,
-	network network.Network,
-	receiver domain.Receiver,
-) *node {
-	return &node{
-		receivers:          []domain.Receiver{receiver},
-		createOutputScript: createOutputScript,
-		network:            network,
-		left:               nil,
-		right:              nil,
-	}
-}
-
-// aggregate two nodes into a branch node
-func newBranch(
-	left *node,
-	right *node,
-) *node {
-	return &node{
-		receivers:          append(left.receivers, right.receivers...),
-		createOutputScript: left.createOutputScript,
-		network:            left.network,
-		left:               left,
-		right:              right,
-	}
-}
-
-// is it the final node of the tree
-func (n *node) isLeaf() bool {
-	return n.left == nil && n.right == nil
-}
-
-// compute the output amount of a node
-func (n *node) amount() uint64 {
-	var amount uint64
-	for _, r := range n.receivers {
-		amount += r.Amount
-	}
-	return amount
-}
-
-// compute the output script of a node
-func (n *node) script() ([]byte, error) {
-	return n.createOutputScript(n.receivers)
-}
-
-// use script & amount to create OutputArgs
-func (n *node) output() (*psetv2.OutputArgs, error) {
-	script, err := n.script()
-	if err != nil {
-		return nil, err
-	}
-
-	return &psetv2.OutputArgs{
-		Asset:  n.network.AssetID,
-		Amount: n.amount(),
-		Script: script,
-	}, nil
-}
-
-// create the node Pset from the previous node Pset represented by input arg
-// if node is a branch, it adds two outputs to the Pset, one for the left branch and one for the right branch
-// if node is a leaf, it only adds one output to the Pset (the node output)
-func (n *node) pset(input psetv2.InputArgs) (*psetv2.Pset, error) {
-	pset, err := psetv2.New(nil, nil, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	updater, err := psetv2.NewUpdater(pset)
-	if err != nil {
-		return nil, err
-	}
-
-	err = updater.AddInputs([]psetv2.InputArgs{input})
-	if err != nil {
-		return nil, err
-	}
-
-	if n.isLeaf() {
-		output, err := n.output()
-		if err != nil {
-			return nil, err
-		}
-
-		err = updater.AddOutputs([]psetv2.OutputArgs{*output})
-		if err != nil {
-			return nil, err
-		}
-		return pset, nil
-	}
-
-	outputLeft, err := n.left.output()
-	if err != nil {
-		return nil, err
-	}
-
-	outputRight, err := n.right.output()
-	if err != nil {
-		return nil, err
-	}
-
-	err = updater.AddOutputs([]psetv2.OutputArgs{*outputLeft, *outputRight})
-	if err != nil {
-		return nil, err
-	}
-
-	return pset, nil
-}
-
-type psetWithLevel struct {
-	pset  *psetv2.Pset
-	level int
-	leaf  bool
-}
-
-// create the node pset and all the psets of its children recursively, updating the input arg at each step
-// the function stops when it reaches a leaf node
-func (n *node) psets(input psetv2.InputArgs, level int) ([]psetWithLevel, error) {
-	pset, err := n.pset(input)
-	if err != nil {
-		return nil, err
-	}
-
-	nodeResult := []psetWithLevel{
-		{pset, level, n.isLeaf()},
-	}
-
-	if n.isLeaf() {
-		return nodeResult, nil
-	}
-
-	unsignedTx, err := pset.UnsignedTx()
-	if err != nil {
-		return nil, err
-	}
-
-	txID := unsignedTx.TxHash().String()
-
-	psetsLeft, err := n.left.psets(psetv2.InputArgs{
-		Txid:    txID,
-		TxIndex: 0,
-	}, level+1)
-	if err != nil {
-		return nil, err
-	}
-
-	psetsRight, err := n.right.psets(psetv2.InputArgs{
-		Txid:    txID,
-		TxIndex: 1,
-	}, level+1)
-	if err != nil {
-		return nil, err
-	}
-
-	return append(nodeResult, append(psetsLeft, psetsRight...)...), nil
-}
diff --git a/server/internal/interface/grpc/handlers/arkservice.go b/server/internal/interface/grpc/handlers/arkservice.go
index 2267eed..dbe1466 100644
--- a/server/internal/interface/grpc/handlers/arkservice.go
+++ b/server/internal/interface/grpc/handlers/arkservice.go
@@ -40,6 +40,37 @@ func NewHandler(service application.Service) arkv1.ArkServiceServer {
 	return h
 }
 
+func (h *handler) Onboard(ctx context.Context, req *arkv1.OnboardRequest) (*arkv1.OnboardResponse, error) {
+	if req.GetUserPubkey() == "" {
+		return nil, status.Error(codes.InvalidArgument, "missing user pubkey")
+	}
+
+	pubKey, err := hex.DecodeString(req.GetUserPubkey())
+	if err != nil {
+		return nil, status.Error(codes.InvalidArgument, "invalid user pubkey")
+	}
+
+	decodedPubKey, err := secp256k1.ParsePubKey(pubKey)
+	if err != nil {
+		return nil, status.Error(codes.InvalidArgument, "invalid user pubkey")
+	}
+
+	if req.GetBoardingTx() == "" {
+		return nil, status.Error(codes.InvalidArgument, "missing boarding tx id")
+	}
+
+	tree, err := toCongestionTree(req.GetCongestionTree())
+	if err != nil {
+		return nil, status.Error(codes.InvalidArgument, err.Error())
+	}
+
+	if err := h.svc.Onboard(ctx, req.GetBoardingTx(), tree, decodedPubKey); err != nil {
+		return nil, err
+	}
+
+	return &arkv1.OnboardResponse{}, nil
+}
+
 func (h *handler) Ping(ctx context.Context, req *arkv1.PingRequest) (*arkv1.PingResponse, error) {
 	if req.GetPaymentId() == "" {
 		return nil, status.Error(codes.InvalidArgument, "missing payment id")
@@ -96,19 +127,6 @@ func (h *handler) FinalizePayment(ctx context.Context, req *arkv1.FinalizePaymen
 	return &arkv1.FinalizePaymentResponse{}, nil
 }
 
-func (h *handler) Faucet(ctx context.Context, req *arkv1.FaucetRequest) (*arkv1.FaucetResponse, error) {
-	_, pubkey, _, err := parseAddress(req.GetAddress())
-	if err != nil {
-		return nil, status.Error(codes.InvalidArgument, err.Error())
-	}
-
-	if err := h.svc.FaucetVtxos(ctx, pubkey); err != nil {
-		return nil, err
-	}
-
-	return &arkv1.FaucetResponse{}, nil
-}
-
 func (h *handler) GetRound(ctx context.Context, req *arkv1.GetRoundRequest) (*arkv1.GetRoundResponse, error) {
 	if len(req.GetTxid()) <= 0 {
 		return nil, status.Error(codes.InvalidArgument, "missing pool txid")
@@ -305,3 +323,32 @@ func castCongestionTree(congestionTree tree.CongestionTree) *arkv1.Tree {
 		Levels: levels,
 	}
 }
+
+func toCongestionTree(treeFromProto *arkv1.Tree) (tree.CongestionTree, error) {
+	levels := make(tree.CongestionTree, 0, len(treeFromProto.Levels))
+
+	for _, level := range treeFromProto.Levels {
+		nodes := make([]tree.Node, 0, len(level.Nodes))
+
+		for _, node := range level.Nodes {
+			nodes = append(nodes, tree.Node{
+				Txid:       node.Txid,
+				Tx:         node.Tx,
+				ParentTxid: node.ParentTxid,
+				Leaf:       false,
+			})
+		}
+
+		levels = append(levels, nodes)
+	}
+
+	for j, treeLvl := range levels {
+		for i, node := range treeLvl {
+			if len(levels.Children(node.Txid)) == 0 {
+				levels[j][i].Leaf = true
+			}
+		}
+	}
+
+	return levels, nil
+}