Payment　channel　with　penalizing　double-spending　has　been　widely　applied　in　cryptocurrencies　for　achieving　fast　payment.　However,　current　payment　channel　solutions　suffer　at　least　one　of　the　following　problems:　1)　large　overheads　and　communication　costs　are　incurred　to　thwart　double-spending;　2)　payees　must　be　defined　before　building　payment　channels;　3)　a　single　payment　channel　does　not　support　multiple　payees;　4)　no　formally　theoretical　proofs　are　provided　for　the　security　of　payment　channels　(as　an　open　problem　mentioned　in　CCS＇15).　In　this　paper,　we　fill　these　gaps　by　introducing　a　new　fast　payment　protocol　named　super　payment　channel.　We　provide　detailed　construction　based　on　digital　signatures　and　accountable　assertions　with　formal　security　proofs.　We　also　implement　our　proposed　protocol　in　different　circumstances　and　demonstrate　that　our　proposed　protocol　incurs　a　small　overhead　compared　to　ordinary　Bitcoin　transactions.