Fluidity (abbreviation: FDT) is a public chain game ecosystem based on a multi-chain architecture. Digital goods in the ecosystem can use trustless (that is, completely safe) smart contracts based on blockchain technology as a flow asset sale. FDT mainly serves the three major entertainment industries of games, e-sports, and film and television, and each industry forms three independent sub-chains. Different from the traditional side chain architecture, in the FDT multi-chain system, all chains do not need to synchronize the data of the main chain, and share the same set of virtual encrypted currency FDT. The maintenance system infrastructure and related technology research and development are exchanged and exchanged around FDT. excitation. Whether users participate in consumption, project parties raise funds, content creators publish content, or advertisers place advertisements, FDT is needed as the only value exchange tool. In the FDT basic main chain, the default consensus mechanism is POS+PBFT, which makes up for the shortcomings of DPOS tending to be "centralized" and "rich", and realizes decentralization in the true sense.