multi: rename RPC AssetLeaf proof field to account for transfer proofs

cmd/tapcli/universe.go

@@ -526,8 +526,8 @@ func universeProofInsert(ctx *cli.Context) error {
 			LeafKey: assetKey,
 		},
 		AssetLeaf: &unirpc.AssetLeaf{
-			Asset:         rpcAsset,
-			IssuanceProof: rawProof,
+			Asset: rpcAsset,
+			Proof: rawProof,
 		},
 	}
 	resp, err := client.InsertProof(ctxc, req)

itest/assertions.go

@@ -1186,8 +1186,8 @@ func AssertUniverseLeavesEqual(t *testing.T, uniIDs []*unirpc.ID,
 			)
 
 			require.Equal(
-				t, aLeaves.Leaves[i].IssuanceProof,
-				bLeaves.Leaves[i].IssuanceProof,
+				t, aLeaves.Leaves[i].Proof,
+				bLeaves.Leaves[i].Proof,
 			)
 		}
 	}

proof/courier.go

@@ -1085,8 +1085,8 @@ func (c *UniverseRpcCourier) DeliverProof(ctx context.Context,
 		}
 
 		assetLeaf := unirpc.AssetLeaf{
-			Asset:         rpcAsset,
-			IssuanceProof: proofBuf.Bytes(),
+			Asset: rpcAsset,
+			Proof: proofBuf.Bytes(),
 		}
 
 		// Construct universe key.
@@ -1202,7 +1202,7 @@ func (c *UniverseRpcCourier) ReceiveProof(ctx context.Context,
 					err)
 			}
 
-			proofBlob = resp.AssetLeaf.IssuanceProof
+			proofBlob = resp.AssetLeaf.Proof
 
 			return nil
 		}

rpcserver.go

@@ -3314,8 +3314,8 @@ func marshalAssetLeaf(ctx context.Context, keys taprpc.KeyLookup,
 	}
 
 	return &unirpc.AssetLeaf{
-		Asset:         rpcAsset,
-		IssuanceProof: buf.Bytes(),
+		Asset: rpcAsset,
+		Proof: buf.Bytes(),
 	}, nil
 }
 
@@ -3622,7 +3622,7 @@ func unmarshalAssetLeaf(leaf *unirpc.AssetLeaf) (*universe.Leaf, error) {
 	// itself.
 	var assetProof proof.Proof
 	if err := assetProof.Decode(
-		bytes.NewReader(leaf.IssuanceProof),
+		bytes.NewReader(leaf.Proof),
 	); err != nil {
 		return nil, err
 	}

taprpc/universerpc/universe.proto

@@ -294,10 +294,10 @@ message AssetLeaf {
 
     // TODO(roasbeef): only needed for display? can get from proof below ^
 
-    // The asset issuance proof, which proves that the asset specified above
-    // was issued properly. This is always just an individual mint/transfer
-    // proof and never a proof file.
-    bytes issuance_proof = 2;
+    // The asset issuance or transfer proof, which proves that the asset
+    // specified above was issued or transferred properly. This is always just
+    // an individual mint/transfer proof and never a proof file.
+    bytes proof = 2;
 }
 
 message AssetLeafResponse {

taprpc/universerpc/universe.swagger.json

@@ -1590,10 +1590,10 @@
           "$ref": "#/definitions/taprpcAsset",
           "description": "The asset included in the leaf."
         },
-        "issuance_proof": {
+        "proof": {
           "type": "string",
           "format": "byte",
-          "description": "The asset issuance proof, which proves that the asset specified above\nwas issued properly. This is always just an individual mint/transfer\nproof and never a proof file."
+          "description": "The asset issuance or transfer proof, which proves that the asset\nspecified above was issued or transferred properly. This is always just\nan individual mint/transfer proof and never a proof file."
         }
       }
     },