Multi-signature cross-chain method and system based on Raft consensus

The invention provides a multi-signature cross-chain system and method based on Raft consensus, and the system comprises a Raft consensus module which receives cross-chain transactions, synchronizes the received cross-chain transactions to all nodes in a network, and carries out the Raft consensus of the cross-chain transactions through the nodes in the network; the multi-signature module randomly elects leader nodes based on all nodes in the network, the leader nodes generate corresponding proos based on cross-chain transactions after Raft consensus, the generated proos are broadcasted to all the nodes in the network, when the number of the generated proos meets a preset value, the proos of all the nodes are combined into a final proos, the generated final proos are synchronized to all the nodes in the network, and all the nodes in the network are signed. The nodes in the network carry out Raft consensus on the final prof; the multi-signature verification module is used for verifying the effectiveness of the