Blockchain-based recordkeeping method and apparatus

A self-service vending system for blockchain-based recordkeeping, comprising a self-service vending terminal and a monitoring terminal that comprise one or more processors and one or more non-transitory computer-readable memories coupled to the one or more processors and configured with instructions executable by the one or more processors to cause the self-service vending system to perform operations comprising:

• obtaining, by an obtaining unit of the self-service vending terminal, identification information of a target buyer;
• generating, by the obtaining unit of the self-service vending terminal, first record information, wherein generating the first record information comprises encrypting the obtained identification information of the target buyer;
• capturing, by the monitoring terminal, live video and/or audio data for at least a part of a purchase process of the target buyer;
• generating, by the monitoring terminal, second record information, wherein generating the second record information comprises compressing the live video and/or audio data associated with the target buyer;
• sending, by the monitoring terminal to a receiving unit of the self-service vending terminal, the generated second record information;
• generating, by the obtaining unit of the self-service vending terminal, third record information based on transaction payment information of the target buyer;
• generating, by a generating unit of the self-service vending terminal, a hash digest from the first record information, the second record information, and the third record information;
• generating, by the generating unit of the self-service vending terminal, a target transaction including the hash digest;
• and
• recording, by the self-service vending terminal, the target transaction in a blockchain, wherein the recording comprises:
• adding the target transaction to a candidate block, and
• broadcasting the candidate block to a plurality of blockchain nodes of the blockchain.

One or more non-transitory computer-readable storage media containing instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of:

• obtaining, by an obtaining unit of a self-service vending terminal, identification information of a target buyer;
• generating, by the obtaining unit of the self-service vending terminal, first record information, wherein generating the first record information comprises encrypting the obtained identification information of the target buyer;
• capturing, by a monitoring terminal, live video and/or audio data for at least a part of a purchase process of the target buyer;
• generating, by the monitoring terminal, second record information, wherein generating the second record information comprises compressing the live video and/or audio data associated with the target buyer;
• sending, by the monitoring terminal to a receiving unit of the self-service vending terminal, the generated second record information;
• generating, by the obtaining unit of the self-service vending terminal, third record information based on transaction payment information of the target buyer;
• generating, by a generating unit of the self-service vending terminal, a hash digest from the first record information, the second record information, and the third record information;
• generating, by the generating unit of the self-service vending terminal, a target transaction including the hash digest;
• and
• recording, by the self-service vending terminal, the target transaction in a blockchain, wherein the recording comprises:
• adding the target transaction to a candidate block, and
• broadcasting the candidate block to a plurality of blockchain nodes of the blockchain.