diff --git a/server/backtask/task/spec_transfer721/gold_bullion.go b/server/backtask/task/spec_transfer721/gold_bullion.go
new file mode 100644
index 00000000..3abfa940
--- /dev/null
+++ b/server/backtask/task/spec_transfer721/gold_bullion.go
@@ -0,0 +1,19 @@
+package spec_transfer721
+
+type goldBullion struct {
+}
+
+func (this* goldBullion) onMint(dbIdx int64, netId int32, contractAddress string, tokenId string,
+	from string, to string) bool {
+	return true
+}
+
+func (this* goldBullion) onLock(dbIdx int64, netId int32, contractAddress string, tokenId string,
+	from string, to string) bool {
+	return true
+}
+
+func (this *goldBullion) onUnlock(dbIdx int64, netId int32, contractAddress string, tokenId string,
+	from string, to string) bool {
+	return true
+}