diff --git a/cashu/core/base.py b/cashu/core/base.py
index 4cb12e6..7db5eb2 100644
--- a/cashu/core/base.py
+++ b/cashu/core/base.py
@@ -24,9 +24,9 @@ class P2SHScript(BaseModel):
 
 class Proof(BaseModel):
     id: str = ""
-    amount: int
+    amount: int = 0
     secret: str = ""
-    C: str
+    C: str = ""
     script: Union[P2SHScript, None] = None
     reserved: bool = False  # whether this proof is reserved for sending
     send_id: str = ""  # unique ID of send attempt
diff --git a/cashu/mint/router.py b/cashu/mint/router.py
index 79b3ca7..b846ae4 100644
--- a/cashu/mint/router.py
+++ b/cashu/mint/router.py
@@ -59,7 +59,6 @@ async def mint(
 
     Call this endpoint after `GET /mint`.
     """
-    print(mint_request.dict())
     try:
         promises = await ledger.mint(
             mint_request.blinded_messages, payment_hash=payment_hash
@@ -74,7 +73,6 @@ async def melt(payload: MeltRequest) -> GetMeltResponse:
     """
     Requests tokens to be destroyed and sent out via Lightning.
     """
-    print(payload)
     ok, preimage = await ledger.melt(payload.proofs, payload.invoice)
     resp = GetMeltResponse(paid=ok, preimage=preimage)
     return resp
@@ -83,7 +81,6 @@ async def melt(payload: MeltRequest) -> GetMeltResponse:
 @router.post("/check")
 async def check_spendable(payload: CheckRequest) -> Dict[int, bool]:
     """Check whether a secret has been spent already or not."""
-    print(payload)
     return await ledger.check_spendable(payload.proofs)
 
 
@@ -94,7 +91,6 @@ async def check_fees(payload: CheckFeesRequest) -> CheckFeesResponse:
     Used by wallets for figuring out the fees they need to supply.
     This is can be useful for checking whether an invoice is internal (Cashu-to-Cashu).
     """
-    print(payload)
     fees_msat = await ledger.check_fees(payload.pr)
     return CheckFeesResponse(fee=fees_msat / 1000)
 
diff --git a/cashu/wallet/wallet.py b/cashu/wallet/wallet.py
index 18362ae..6f17cfa 100644
--- a/cashu/wallet/wallet.py
+++ b/cashu/wallet/wallet.py
@@ -273,9 +273,16 @@ class LedgerAPI:
         Cheks whether the secrets in proofs are already spent or not and returns a list of booleans.
         """
         payload = CheckRequest(proofs=proofs)
+
+        def _check_spendable_include_fields(proofs):
+            """strips away fields from the model that aren't necessary for the /split"""
+            return {
+                "proofs": {i: {"secret"} for i in range(len(proofs))},
+            }
+
         resp = self.s.post(
             self.url + "/check",
-            json=payload.dict(),
+            json=payload.dict(include=_check_spendable_include_fields(proofs)),
         )
         resp.raise_for_status()
         return_dict = resp.json()