diff --git a/pkg/readerclient/proof.go b/pkg/readerclient/proof.go
index 4a07121f2..a3e920f68 100644
--- a/pkg/readerclient/proof.go
+++ b/pkg/readerclient/proof.go
@@ -36,7 +36,7 @@ type Proof struct {
 	OutputHashesInEpochSiblings []hexutil.Bytes `json:"outputHashesInEpochSiblings"`
 	// Data that allows the validity proof to be contextualized within submitted claims,
 	// given as a payload in Ethereum hex binary format, starting with '0x'
-	Context string `json:"context"`
+	Context hexutil.Bytes `json:"context"`
 }
 
 func newProof(
@@ -96,8 +96,14 @@ func newProof(
 			return nil, fmt.Errorf("failed to decode MachineStateHash to bytes: %v", err)
 		}
 
-		outputHashEpochSiblings = append(outputHashOutputSiblings, tempHash)
+		outputHashEpochSiblings = append(outputHashEpochSiblings, tempHash)
 	}
+
+	contextBytes, err := hexutil.Decode(context)
+	if err != nil {
+		return nil, fmt.Errorf("failed to decode Context to bytes: %v", err)
+	}
+
 	proof := Proof{
 		inputIndexWithinEpoch,
 		outputIndexWithinInput,
@@ -107,7 +113,7 @@ func newProof(
 		machineHash,
 		outputHashOutputSiblings,
 		outputHashEpochSiblings,
-		context,
+		contextBytes,
 	}
 
 	return &proof, err