minor

diff --git a/asset/builder.go b/asset/builder.go
index cc01fc6..8ed39a5 100644 (file)
--- a/asset/builder.go
+++ b/asset/builder.go
@@ -29,6 +29,8 @@ type crossInAction struct {
        AssetDefinition map[string]interface{} `json:"asset_definition"`
 }
 
+// TODO: filter double spent utxo in txpool?
+// TODO: roll back unconfirmed or orphan?
 func (a *crossInAction) Build(ctx context.Context, builder *txbuilder.TemplateBuilder) error {
        var missing []string
        if a.SourceID.IsZero() {
@@ -44,13 +46,6 @@ func (a *crossInAction) Build(ctx context.Context, builder *txbuilder.TemplateBu
                return txbuilder.MissingFieldsError(missing...)
        }
 
-       sourceKey := []byte(fmt.Sprintf("SC:%v:%v", a.SourceID, a.SourcePos))
-       a.reg.assetMu.Lock()
-       defer a.reg.assetMu.Unlock()
-       if existed := a.reg.db.Get(sourceKey); existed != nil {
-               return errors.New("mainchain output double spent")
-       }
-
        rawDefinitionByte, err := serializeAssetDef(a.AssetDefinition)
        if err != nil {
                return ErrSerializing
@@ -64,7 +59,6 @@ func (a *crossInAction) Build(ctx context.Context, builder *txbuilder.TemplateBu
        tplIn := &txbuilder.SigningInstruction{}
        fed := federation.GetFederation()
        tplIn.AddRawWitnessKeys(fed.XPubs, fed.Path(), fed.Quorum)
-       a.reg.db.Set(sourceKey, []byte("true"))
        return builder.AddInput(txin, tplIn)
 }