Multi-chain leader hidden distribution method and device based on replacement proof

The invention relates to the technical field of information security, in particular to a multi-chain leader hidden distribution method and device based on replacement certification, and the method comprises the steps: representing a node set which completes mortgage or is still in a mortgage list before an era em-2, so as to enable a beacon chain to establish a mortgage amount table for nodes which are successfully mortgage; based on the mortgage amount table, the election parameters are initialized; confusion and replacement are carried out based on the initialized election parameters, and a leader is enabled to be attached with an identity certificate while outputting a block; and verifying whether the identity of the block output person meets the preset legality, and performing replacement reveal and punishment after the selected leader outputs the block. The contradiction between concealment of the leader identity under the multi-chain architecture and deterministic block-out non-bifurcation of the block