The invention relates to a method. Any information (instructions, events, occurrences, invitations, social interactions, histories, relationships, associations, membership, affiliations, hierarchies, rights, privileges, requests, ownership, obligations, responsibilities, contracts, commitments, identities, attributes, statuses, endorsement, qualification,
authentication, credentials, etc.) worthy of being recorded for future reference, transactions,
verification, calculation, determination, and execution can be made through a law
enforcement agency.
Electronic communication records sent to block chain operators and guardians (nodes, miners and the like) by supervision organizations and other entities or individuals are recorded into the block
chain system. Then, the block
chain system can decide whether to approve the transaction, whether to unfreeze the frozen account, how to perform and settle the
smart contract, and the like. The external
system can also query information such as facts,
verification and guidance from the block
chain system. According to the method, law
enforcement, supervision and social, economic and financial transactions and
verification can be performed on the block chain, and the method is not only suitable for an unlicensed block chain
system, but also suitable for a licensed block chain
system.