DATA STORAGE AND ATTESTATION METHOD AND SYSTEM BASED ON MULTIPLE BLOCKCHAIN NETWORKS

摘要

Disclosed are a data storage and attestation method and system based on multiple blockchain networks. The data stored and attested by blockchains of at least two first-type blockchain networks is mapped to blockchains of a second-type blockchain network; with regard to each first-type blockchain network, at least one node in the first-type blockchain network is managed by a designated manager; and at least one node in the second-type blockchain network is managed by the designated manager. Specifically, with regard to any first-type blockchain network, each first-type storage and attestation transaction constructed by the first-type blockchain network is also acquired by the second-type blockchain network, and the second-type blockchain network writes a second-type storage and attestation transaction containing a transaction hash of the acquired first-type storage and attestation transaction into its own blockchains.