From 74bbcdf1fed6aab17f5bd718ccc4c0ffba852e84 Mon Sep 17 00:00:00 2001
From: Alejandro Cabeza Romero <alex93cabeza@gmail.com>
Date: Mon, 9 Mar 2026 12:21:52 +0000
Subject: [PATCH] Handle NoProof.

---
 src/models/transactions/operations/proofs.py | 6 +++++-
 src/node/api/serializers/proof.py            | 9 ++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/models/transactions/operations/proofs.py b/src/models/transactions/operations/proofs.py
index a27b145..7f44d53 100644
--- a/src/models/transactions/operations/proofs.py
+++ b/src/models/transactions/operations/proofs.py
@@ -15,6 +15,10 @@ class NbeSignature(NbeSchema):
     type: str
 
 
+class NoProof(NbeSignature):
+    type: Literal["NoProof"] = "NoProof"
+
+
 class Ed25519Signature(NbeSignature):
     type: Literal["Ed25519"] = "Ed25519"
     signature: HexBytes
@@ -31,4 +35,4 @@ class ZkAndEd25519Signature(NbeSignature):
     ed25519_signature: HexBytes
 
 
-OperationProof = Ed25519Signature | ZkSignature | ZkAndEd25519Signature
+OperationProof = NoProof | Ed25519Signature | ZkSignature | ZkAndEd25519Signature
diff --git a/src/node/api/serializers/proof.py b/src/node/api/serializers/proof.py
index c2e2df0..60e4bef 100644
--- a/src/node/api/serializers/proof.py
+++ b/src/node/api/serializers/proof.py
@@ -7,6 +7,7 @@ from core.models import NbeSerializer
 from models.transactions.operations.proofs import (
     Ed25519Signature,
     NbeSignature,
+    NoProof,
     ZkAndEd25519Signature,
     ZkSignature,
 )
@@ -21,6 +22,11 @@ class OperationProofSerializer(EnforceSubclassFromRandom, ABC):
         raise NotImplementedError
 
 
+class NoProofSerializer(OperationProofSerializer):
+    def into_operation_proof(self) -> NbeSignature:
+        return NoProof.model_validate({})
+
+
 class Ed25519SignatureSerializer(OperationProofSerializer, RootModel[bytes]):
     root: BytesFromIntArray
 
@@ -74,6 +80,7 @@ class ZkAndEd25519SignaturesSerializer(OperationProofSerializer, NbeSerializer):
 
 
 PROOF_TAG_TO_SERIALIZER = {
+    "NoProof": NoProofSerializer,
     "Ed25519Sig": Ed25519SignatureSerializer,
     "ZkSig": ZkSignatureSerializer,
     "ZkAndEd25519Sigs": ZkAndEd25519SignaturesSerializer,
@@ -91,7 +98,7 @@ def _parse_proof(data: Any) -> OperationProofSerializer:
 
 
 OperationProofSerializerVariants = Union[
-    Ed25519SignatureSerializer, ZkSignatureSerializer, ZkAndEd25519SignaturesSerializer
+    NoProof, Ed25519SignatureSerializer, ZkSignatureSerializer, ZkAndEd25519SignaturesSerializer
 ]
 OperationProofSerializerField = Annotated[
     OperationProofSerializerVariants,