From 5f6c93457231f30861500abcacffec789777b69f Mon Sep 17 00:00:00 2001
From: Johannes Tuerk <johannes.tuerk@lissi.id>
Date: Wed, 27 Aug 2025 11:25:23 +0200
Subject: [PATCH 1/2] fix json string formatting

Signed-off-by: Johannes Tuerk <johannes.tuerk@lissi.id>
---
 src/WalletFramework.Oid4Vc/Oid4Vp/Models/WalletMetadata.cs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/WalletFramework.Oid4Vc/Oid4Vp/Models/WalletMetadata.cs b/src/WalletFramework.Oid4Vc/Oid4Vp/Models/WalletMetadata.cs
index c505f430..09ecc5c7 100644
--- a/src/WalletFramework.Oid4Vc/Oid4Vp/Models/WalletMetadata.cs
+++ b/src/WalletFramework.Oid4Vc/Oid4Vp/Models/WalletMetadata.cs
@@ -1,3 +1,4 @@
+using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 
 namespace WalletFramework.Oid4Vc.Oid4Vp.Models;
@@ -47,11 +48,11 @@ public static WalletMetadata CreateDefault()
     
     public string ToJsonString()
     {
-        return new JObject
+        return JsonConvert.SerializeObject(new JObject
         {
             [VpFormatsSupportedIdentifier] = JObject.FromObject(VpFormatsSupported),
             [ClientIdPrefixesSupportedIdentifier] = new JArray {ClientIdPrefixesSupported.Select(x => x.AsString())},
             [ClientIdSchemesSupportedIdentifier] = new JArray {ClientIdPrefixesSupported.Select(x => x.AsString())},
-        }.ToString();
+        });
     }
 } 

From 113afadc9d4090940286c94d9a820c2d7ea3cc9d Mon Sep 17 00:00:00 2001
From: Johannes Tuerk <johannes.tuerk@lissi.id>
Date: Wed, 27 Aug 2025 11:26:16 +0200
Subject: [PATCH 2/2] revert tx data linking behaviour (only take one)

Signed-off-by: Johannes Tuerk <johannes.tuerk@lissi.id>
---
 .../Oid4Vp/TransactionDatas/TransactionDataFun.cs  | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/src/WalletFramework.Oid4Vc/Oid4Vp/TransactionDatas/TransactionDataFun.cs b/src/WalletFramework.Oid4Vc/Oid4Vp/TransactionDatas/TransactionDataFun.cs
index 1d86bc19..55e40b62 100644
--- a/src/WalletFramework.Oid4Vc/Oid4Vp/TransactionDatas/TransactionDataFun.cs
+++ b/src/WalletFramework.Oid4Vc/Oid4Vp/TransactionDatas/TransactionDataFun.cs
@@ -1,7 +1,6 @@
 using LanguageExt;
 using WalletFramework.Core.Base64Url;
 using WalletFramework.Core.Functional;
-using WalletFramework.Core.Functional.Enumerable;
 using WalletFramework.Oid4Vc.Oid4Vp.Errors;
 using WalletFramework.Oid4Vc.Oid4Vp.Models;
 using WalletFramework.Oid4Vc.Oid4Vp.TransactionDatas.Errors;
@@ -123,12 +122,12 @@ internal static Validation<AuthorizationRequestCancellation, PresentationRequest
 
                 foreach (var txData in transactionDatas)
                 {
-                    var findings = indexedCandidates.Where(tuple =>
+                    var found = indexedCandidates.FirstOrDefault(tuple =>
                     {
                         return new[] { tuple.candidate }.FindCandidateForTransactionData(txData).IsSuccess;
-                    }).ToList();
+                    });
 
-                    if (findings.IsEmpty())
+                    if (found == default)
                     {
                         return new InvalidTransactionDataError(
                             $"No credentials found that satisfy the transaction data with type {txData.GetTransactionDataType().AsString()}",
@@ -136,11 +135,8 @@ internal static Validation<AuthorizationRequestCancellation, PresentationRequest
                     }
 
                     // Update the candidate with the transaction data
-                    foreach (var found in findings)
-                    {
-                        var updated = found.candidate.AddTransactionDatas([txData]);
-                        updatedCandidates[(found.setIdx, found.candIdx)] = updated;
-                    }
+                    var updated = found.candidate.AddTransactionDatas([txData]);
+                    updatedCandidates[(found.setIdx, found.candIdx)] = updated;
                 }
 
                 // Reconstruct sets with updated candidates