Blockchain-based user information processing method and system

A blockchain-based user information processing system, wherein the system comprises a plurality of application nodes, each of the plurality of application nodes comprises at least one processor and a memory storing a local copy of a distributed ledger, and a communication interface for exchanging data with other application nodes of the plurality of application nodes, wherein,

• a responsive application node among the plurality of application nodes, configured for receiving a user information change request sent by a user terminal, sending first identity information and new user information to be changed to a plurality of verification application nodes in the plurality of application nodes, the first identity information and the new user information are carried by the user information change request;
• each of the plurality of verification application nodes, configured for verifying the first identity information and the new user information and independently generating a verification result;
• and
• the responsive application node, further configured for changing the user information of a user stored in a blockchain based on the new user information when the first identity information and the new user information pass verification.

A blockchain-based user information processing apparatus, wherein the apparatus is applied to any application node in a blockchain, the blockchain comprises a plurality of application nodes, the apparatus comprising:

• a first receiving module, configured for receiving a user information change request sent by a user terminal, wherein the user information change request carries first identity information of the user and new user information to be changed;
• a verification module, configured for verifying the first identity information and the new user information through a plurality of verification application nodes in the blockchain respectively, the plurality of verification application nodes are application nodes in the blockchain, each of the plurality of verification application nodes independently generating a verification result;
• and
• a changing module, configured for changing user information of the user stored in the blockchain based on the new user information when the first identity information and the new user information pass verification.