With　the　development　of　smart　cities,　not　only　are　all　corners　of　the　city　connected　to　each　other,　but　also　connected　from　city　to　city.　They　form　a　large　distributed　network　together,　which　can　facilitate　the　integration　of　Distributed　Energy　Stations　(DESs)　and　corresponding　smart　aggregators.　Nevertheless,　because　of　potential　security　and　privacy　protection　arising　from　trustless　energies　trading,　how　to　make　such　energies　trading　go　smoothly　is　a　tricky　challenge.　In　this　paper,　we　propose　a　blockchain-based　multiple　energies　trading　(B-MET)　system　for　secure　and　efficient　energies　trading　by　executing　a　smart　contract　we　design.　Because　energies　trading　requires　the　blockchain　in　B-MET　system　to　have　high　throughput　and　low　latency,　we　design　a　new　byzantine-based　consensus　mechanism　(BCM)　based　on　node＇s　credit　to　improve　efficiency　for　the　consortium　blockchain　under　the　B-MET　system.　Then,　we　take　combined　heat　and　power　(CHP)　system　as　a　typical　example　that　provides　distributed　energies.　We　quantify　their　utilities　and　model　the　interactions　between　aggregators　and　DESs　in　a　smart　city　by　a　novel　multi-leader　multi-follower　Stackelberg　game.　It　is　analyzed　and　solved　by　reaching　Nash　equilibrium　between　aggregators,　which　reflects　the　competition　between　aggregators　to　purchase　energies　from　DESs.　In　the　end,　we　conduct　plenty　of　numerical　simulations　to　evaluate　and　verify　our　proposed　model　and　algorithms,　which　demonstrate　their　correctness　and　efficiency　completely.