Data processing method and apparatus based on multi-blockchain, electronic device, computer-readable storage medium, and computer program product

A data processing apparatus operating a first consensus node of a first network of a multi-blockchain, comprising:

• at least one memory configured to store computer program code;
• and
• at least one processor configured to read the program code and operate as instructed by the program code, the program code comprising:
• clearing request obtaining code configured to cause at least one of the at least one processor to:
• obtain, through a service clearing node, a clearing transaction request submitted by a service object comprising a first service object associated with a first service network, wherein the first service network is associated with the first network, and the first network is a consensus network corresponding to a first main chain of the multi-blockchain;
• and
• use a node identifier of the service clearing node carried in the clearing transaction request as a target node identifier;
• identity authority verification code configured to cause at least one of the at least one processor to perform verification on an identity authority of the service clearing node based on the target node identifier and a first authority contract on the first main chain, to obtain an identity authority verification result corresponding to the service clearing node;
• first clearing invoking code configured to cause at least one of the at least one processor to:
• invoke a first authority clearing contract associated with the first authority contract to obtain first service data associated with a first-type clearing node corresponding to the first service object that is a service node in the first service network and first ledger data corresponding to the first service data from the first main chain, based on:
• the identity authority verification result indicating the service clearing node is the first-type clearing node, and
• a node authority of the first-type clearing node being a first-type clearing authority indicating the first-type clearing node has data obtaining authority to obtain the first service data which is visible to the first service object from the first main chain;
• and
• obtain first contract data corresponding to the first ledger data from a contract database corresponding to the first main chain;
• and
• first clearing response returning code configured to cause at least one of the at least one processor to:
• use the first service data, the first ledger data, and the first contract data as first clearing response information corresponding to the clearing transaction request;
• and
• return the first clearing response information to the first-type clearing node, to cause the first-type clearing node to recover a sub-ledger corresponding to the first ledger data based on the first clearing response information.

A non-transitory computer-readable storage medium, storing computer code for operating a first consensus node of a first network of a multi-blockchain, which, when executed by at least one processor, causes the at least one processor to at least:

• obtain, through a service clearing node, a clearing transaction request submitted by a service object comprising a first service object associated with a first service network, wherein the first service network is associated with the first network, and the first network is a consensus network corresponding to a first main chain of the multi-blockchain;
• use a node identifier of the service clearing node carried in the clearing transaction request as a target node identifier;
• perform verification on an identity authority of the service clearing node based on the target node identifier and a first authority contract on the first main chain, to obtain an identity authority verification result corresponding to the service clearing node;
• invoke a first authority clearing contract associated with the first authority contract to obtain first service data associated with a first-type clearing node corresponding to the first service object that is a service node in the first service network and first ledger data corresponding to the first service data from the first main chain, based on:
• the identity authority verification result indicating the service clearing node is the first-type clearing node, and
• a node authority of the first-type clearing node being a first-type clearing authority indicating the first-type clearing node has data obtaining authority to obtain the first service data which is visible to the first service object from the first main chain;
• obtain first contract data corresponding to the first ledger data from a contract database corresponding to the first main chain;
• use the first service data, the first ledger data, and the first contract data as first clearing response information corresponding to the clearing transaction request;
• and
• return the first clearing response information to the first-type clearing node, to cause the first-type clearing node to recover a sub-ledger corresponding to the first ledger data based on the first clearing response information.