Blockchain-based data verification system and method, computing device and storage medium

A blockchain-based data verification method, comprising:

• at a second verification system implemented by a second computing system,
• obtaining, by a second verification system implemented by a second computing system, second transaction data from a second service system;
• storing, by the second verification system, the second transaction data in a database associated with the second verification system;
• receiving, by the second verification system via a communication link outside of a blockchain network, a verification request from a first verification system implemented by a first computing system, the verification request including a first verification file and a first digital code generated based on the first verification file, the first verification file including first transaction data, the first digital code being different from each one of the first verification file or the first transaction data;
• verifying, by the second verification system, the first transaction data in the first verification file, the verifying the first transaction data including:
• validating authenticity of the first transaction data using the first digital code,
• matching the first transaction data with the second transaction data stored in the database associated with the second verification system, the first transaction data and the second transaction data are different from one another, and
• generating a verification result notification;
• sending, by the second verification system via the communication link outside of the blockchain network, the verification result notification to the first verification system, the verification result notification causing the first verification system to send the first transaction data to a second blockchain node on a blockchain network;
• and
• sending, by the second verification system, the second transaction data in the local database to a first blockchain node on the blockchain network based on the matching the first transaction data with the second transaction data is successful, the sending the second transaction data causing the blockchain network to implement a consensus mechanism to reach a consensus on the first transaction data and the second transaction data sent by both the first verification system and the second verification system, respectively, based on that the verifying the first transaction data conducted outside of the blockchain network is successful, and wherein the first verification system and the second verification system are both outside of the blockchain network.

A computing device, comprising a processor and a memory having executable instruction stored thereon, which when executed by the processor enable the processor to implement acts including:

• obtaining second transaction data from a second service system;
• storing the second transaction data in a database associated with the computing device;
• receiving, via a communication link outside of a blockchain network, a verification request from a first verification system, the verification request including a first verification file and a digital code generated based on the first verification file, the first verification file including a first transaction data, the first digital code being different from each one of the first verification file or the first transaction data;
• verifying the first transaction data in the first verification file, the verifying the first transaction data including:
• validating authenticity of the first transaction data using first digital code, and
• matching the first transaction data with the second transaction data in the database associated with the computing device, the first transaction data and the second transaction data are different from one another;
• generating a verification result notification based on a result of the verifying the first transaction data with the second transaction data;
• sending, via the communication link outside of the blockchain network, the verification result notification to the first verification system, the verification result notification causing the first verification system to send the first transaction data to a second blockchain node on a blockchain network based on the verification result notification;
• and
• sending the second transaction data in the local database to a first blockchain node on the blockchain network based on the result of the verifying the first transaction data with the second transaction data, wherein the blockchain network includes a consensus mechanism configured to reach a consensus on the first transaction data and the second transaction data sent by the first verification system and the second verification system, respectively, based on that the verifying the first transaction data conducted outside of the blockchain network is successful, and wherein the first verification system and the second verification system are both outside of the blockchain network.