taprpc: TransferOutputAnchor to include the anchor pkscript

Author: bhandras

rpcserver.go

@@ -3589,6 +3589,7 @@ func marshalOutboundParcel(
 			MerkleRoot:       out.Anchor.MerkleRoot[:],
 			TapscriptSibling: out.Anchor.TapscriptSibling,
 			NumPassiveAssets: out.Anchor.NumPassiveAssets,
+			PkScript:         out.Anchor.PkScript,
 		}
 		scriptPubKey := out.ScriptKey.PubKey
 

tapfreighter/interface.go

@@ -224,6 +224,9 @@ type Anchor struct {
 	// NumPassiveAssets is the number of passive assets in the commitment
 	// for this anchor output.
 	NumPassiveAssets uint32
+
+	// PkScript is the pkScript of the anchor output.
+	PkScript []byte
 }
 
 // OutputIdentifier is a key that can be used to uniquely identify a transfer

tapfreighter/parcel.go

@@ -726,6 +726,7 @@ func outputAnchor(anchorTx *tapsend.AnchorTransaction, vOut *tappsbt.VOutput,
 		MerkleRoot:        merkleRoot[:],
 		TapscriptSibling:  preimageBytes,
 		NumPassiveAssets:  numPassiveAssets,
+		PkScript:          txOut.PkScript,
 	}, nil
 }
 

taprpc/assetwalletrpc/assetwallet.swagger.json

@@ -1147,6 +1147,11 @@
         "num_passive_assets": {
           "type": "integer",
           "format": "int64"
+        },
+        "pk_script": {
+          "type": "string",
+          "format": "byte",
+          "description": "pk_script is the pkscript of the anchor output."
         }
       }
     }

taprpc/taprootassets.pb.go

@@ -779,6 +779,9 @@ message TransferOutputAnchor {
     bytes tapscript_sibling = 6;
 
     uint32 num_passive_assets = 7;
+
+    // pk_script is the pkscript of the anchor output.
+    bytes pk_script = 8;
 }
 
 enum OutputType {

taprpc/taprootassets.proto

@@ -2527,6 +2527,11 @@
         "num_passive_assets": {
           "type": "integer",
           "format": "int64"
+        },
+        "pk_script": {
+          "type": "string",
+          "format": "byte",
+          "description": "pk_script is the pkscript of the anchor output."
         }
       }
     },