FIELD: data storage.
SUBSTANCE: invention relates to data storage methods, a blockchain system and a distribution centre. In the method, the system of a blockchain comprises a distribution centre, a subsystem outside consensus and a plurality of consensus subsystems, each of which corresponds to a consortial blockchain network comprising a plurality of consensus nodes responsible for confirming consensus, and the non-consensus subsystem comprises a plurality of non-consensus nodes which are outside the consortia blockchain networks, wherein the method includes, through a distribution centre, receiving a transaction request sent by a subsystem outside the consensus, containing transaction data; determining a consensus subsystem corresponding to the transaction request based on the transaction data; and sending the transaction request to this determined consensus subsystem, which performs confirmation of the consensus regarding the transaction request and stores the unit corresponding to the confirmed transaction request to the blockchain consortium corresponding to the consensus subsystem.
EFFECT: technical result consists in improvement of transactions security in network of blockchain.
13 cl, 6 dwg
