Group service implementation method and device, equipment and storage medium

A group service implementation method based on a blockchain, executed by group members, comprising:

• generating a signature private key and a verification public key for a group to which the group members belong;
• configuring the verification public key as group information, carrying the group information in a group information issuing transaction request, and issuing the group information issuing transaction request to the blockchain for storage;
• acquiring an authentication request for authenticating to-be-authenticated data;
• authenticating, by at least two members among the group members of the group to which the group member belong, the to-be-authenticated data by adopting secure multi-party computation, and performing threshold signature on the to-be-authenticated data by adopting the signature private key;
• and
• responding the authentication request according to the threshold signature, wherein the threshold signature is used for being carried in a service transaction request initiated on the blockchain to enable a blockchain node to verify the threshold signature according to the verification public key stored in the blockchain.