Data processing method, apparatus, and device, blockchain system, and computer-readable storage medium

A computer device acting as a blockchain client in a blockchain system, the blockchain system comprising an identity chain and a plurality of application chains, the identity chain being configured to provide an identity service for blockchain applications deployed on the application chains, the computer device comprising:

• a memory, configured to store executable instructions;
• and a processor, configured to execute the executable instructions stored in the memory and cause the computer device to perform a data processing method including:
• transmitting an identity query request used for querying node identity information to an identity chain node associated with the identity chain, the identity query request comprising an identity identifier (ID) of the blockchain client and a data ID of to-be-processed data;
• receiving the node identity information corresponding to the identity ID and the data ID returned by the identity chain node;
• determining, within a blockchain node set, a target blockchain node corresponding to the node identity information;
• transmitting the data ID to the target blockchain node, to query data on at least one of the plurality of application chains based on the data ID through the target blockchain node;
• and
• receiving the queried data returned by the target blockchain node.

A non-transitory computer-readable storage medium, storing executable instructions, the executable instructions, when executed by a processor of a computer device acting as a blockchain client in a blockchain system, the blockchain system comprising an identity chain and a plurality of application chains, the identity chain being configured to provide an identity service for blockchain applications deployed on the application chains, causing the computer device to perform a data processing method including:

• transmitting an identity query request used for querying node identity information to an identity chain node associated with the identity chain, the identity query request comprising an identity identifier (ID) of the blockchain client and a data ID of to-be-processed data;
• receiving the node identity information corresponding to the identity ID and the data ID returned by the identity chain node;
• determining, within a blockchain node set, a target blockchain node corresponding to the node identity information;
• transmitting the data ID to the target blockchain node, to query data on at least one of the plurality of application chains based on the data ID through the target blockchain node;
• and
• receiving the queried data returned by the target blockchain node.