Moac Blockchain Tech Inc.

Weiqi Wang

Qing Xu

Xiaohu Chen

Yang Chen

Xinle Yang

Yifan Wang

Zhengpeng Li

Yuechao Ma

Xiannong Fu

A record of authorization including user information is received and appended to a blockchain. The record of authorization authorizes access by a third-party application to the user information for an access duration. The user information is encrypted by a group key and access duration is based on a change to the group key. The group key comprises a public/private key pair, and the access duration is implemented by an authorization group of nodes having the group key. The group key corresponds to either a valid group key at or near the start of the access duration, that enables decryption of a message in the record of authorization that includes the user information, or an incompatible group key at or after the end of the access duration, that does not enable decryption of the message in the record of authorization that includes the user information.

Apparatus and method for terminating an authorization to access a record in a blockchain ledger

Growing community of inventors

Palo Alto, CA, United States of America

Weiqi Wang