diff --git a/cashu/core/helpers.py b/cashu/core/helpers.py
index 0f8c885..680e773 100644
--- a/cashu/core/helpers.py
+++ b/cashu/core/helpers.py
@@ -1,7 +1,8 @@
 import asyncio
 from functools import partial, wraps
 
-from cashu.core.settings import LIGHTNING_FEE_PERCENT, LIGHTNING_RESERVE_FEE_MIN
+from cashu.core.settings import (LIGHTNING_FEE_PERCENT,
+                                 LIGHTNING_RESERVE_FEE_MIN)
 
 
 def async_wrap(func):
diff --git a/cashu/core/script.py b/cashu/core/script.py
index 6961cef..ea2012d 100644
--- a/cashu/core/script.py
+++ b/cashu/core/script.py
@@ -6,15 +6,12 @@ COIN = 100_000_000
 TXID = "bff785da9f8169f49be92fa95e31f0890c385bfb1bd24d6b94d7900057c617ae"
 SEED = b"__not__used"
 
-from bitcoin.core import CMutableTxIn, CMutableTxOut, COutPoint, CTransaction, lx
+from bitcoin.core import (CMutableTxIn, CMutableTxOut, COutPoint, CTransaction,
+                          lx)
 from bitcoin.core.script import *
 from bitcoin.core.script import CScript
-from bitcoin.core.scripteval import (
-    SCRIPT_VERIFY_P2SH,
-    EvalScriptError,
-    VerifyScript,
-    VerifyScriptError,
-)
+from bitcoin.core.scripteval import (SCRIPT_VERIFY_P2SH, EvalScriptError,
+                                     VerifyScript, VerifyScriptError)
 from bitcoin.wallet import CBitcoinSecret, P2SHBitcoinAddress
 
 
diff --git a/cashu/lightning/lnbits.py b/cashu/lightning/lnbits.py
index f174f2d..5a5a6de 100644
--- a/cashu/lightning/lnbits.py
+++ b/cashu/lightning/lnbits.py
@@ -8,13 +8,8 @@ import requests
 
 from cashu.core.settings import LNBITS_ENDPOINT, LNBITS_KEY
 
-from .base import (
-    InvoiceResponse,
-    PaymentResponse,
-    PaymentStatus,
-    StatusResponse,
-    Wallet,
-)
+from .base import (InvoiceResponse, PaymentResponse, PaymentStatus,
+                   StatusResponse, Wallet)
 
 
 class LNbitsWallet(Wallet):
diff --git a/cashu/mint/ledger.py b/cashu/mint/ledger.py
index 12c610d..5813fd0 100644
--- a/cashu/mint/ledger.py
+++ b/cashu/mint/ledger.py
@@ -16,14 +16,9 @@ from cashu.core.secp import PrivateKey, PublicKey
 from cashu.core.settings import LIGHTNING, MAX_ORDER
 from cashu.core.split import amount_split
 from cashu.lightning import WALLET
-from cashu.mint.crud import (
-    get_lightning_invoice,
-    get_proofs_used,
-    invalidate_proof,
-    store_lightning_invoice,
-    store_promise,
-    update_lightning_invoice,
-)
+from cashu.mint.crud import (get_lightning_invoice, get_proofs_used,
+                             invalidate_proof, store_lightning_invoice,
+                             store_promise, update_lightning_invoice)
 
 
 class Ledger:
diff --git a/cashu/mint/router.py b/cashu/mint/router.py
index ad70992..cd2310b 100644
--- a/cashu/mint/router.py
+++ b/cashu/mint/router.py
@@ -3,16 +3,9 @@ from typing import Union
 from fastapi import APIRouter
 from secp256k1 import PublicKey
 
-from cashu.core.base import (
-    CashuError,
-    CheckRequest,
-    GetMeltResponse,
-    GetMintResponse,
-    MeltRequest,
-    MintRequest,
-    PostSplitResponse,
-    SplitRequest,
-)
+from cashu.core.base import (CashuError, CheckRequest, GetMeltResponse,
+                             GetMintResponse, MeltRequest, MintRequest,
+                             PostSplitResponse, SplitRequest)
 from cashu.mint import ledger
 
 router: APIRouter = APIRouter()
diff --git a/cashu/wallet/cli.py b/cashu/wallet/cli.py
index 84a9a92..40ffb47 100755
--- a/cashu/wallet/cli.py
+++ b/cashu/wallet/cli.py
@@ -20,7 +20,8 @@ from cashu.core.base import Proof
 from cashu.core.bolt11 import Invoice
 from cashu.core.helpers import fee_reserve
 from cashu.core.migrations import migrate_databases
-from cashu.core.settings import CASHU_DIR, DEBUG, ENV_FILE, LIGHTNING, MINT_URL, VERSION
+from cashu.core.settings import (CASHU_DIR, DEBUG, ENV_FILE, LIGHTNING,
+                                 MINT_URL, VERSION)
 from cashu.wallet import migrations
 from cashu.wallet.crud import get_reserved_proofs, get_unused_locks
 from cashu.wallet.wallet import Wallet as Wallet
diff --git a/cashu/wallet/wallet.py b/cashu/wallet/wallet.py
index e7f97bb..1c41869 100644
--- a/cashu/wallet/wallet.py
+++ b/cashu/wallet/wallet.py
@@ -8,34 +8,19 @@ import requests
 from loguru import logger
 
 import cashu.core.b_dhke as b_dhke
-from cashu.core.base import (
-    BlindedMessage,
-    BlindedSignature,
-    CheckRequest,
-    MeltRequest,
-    MintRequest,
-    P2SHScript,
-    Proof,
-    SplitRequest,
-)
+from cashu.core.base import (BlindedMessage, BlindedSignature, CheckRequest,
+                             MeltRequest, MintRequest, P2SHScript, Proof,
+                             SplitRequest)
 from cashu.core.db import Database
-from cashu.core.script import (
-    step0_carol_checksig_redeemscrip,
-    step0_carol_privkey,
-    step1_carol_create_p2sh_address,
-    step2_carol_sign_tx,
-)
+from cashu.core.script import (step0_carol_checksig_redeemscrip,
+                               step0_carol_privkey,
+                               step1_carol_create_p2sh_address,
+                               step2_carol_sign_tx)
 from cashu.core.secp import PublicKey
 from cashu.core.settings import DEBUG
 from cashu.core.split import amount_split
-from cashu.wallet.crud import (
-    get_proofs,
-    invalidate_proof,
-    secret_used,
-    store_p2sh,
-    store_proof,
-    update_proof_reserved,
-)
+from cashu.wallet.crud import (get_proofs, invalidate_proof, secret_used,
+                               store_p2sh, store_proof, update_proof_reserved)
 
 
 class LedgerAPI: