Patent ID: 11876905
Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
Field: IT methods for management (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A computer-implemented method, comprising:
receiving, by one or more nodes comprising a blockchain, a first public key from a first server computer, the first public key being associated with a communication device of a user;
generating, by the one or more nodes comprising the blockchain, a second public key and a second private key associated with the user of the communication device;
signing, by the one or more nodes comprising the blockchain, the first public key with the second private key to generate a digital signature for the user;
recording, by the one or more nodes comprising the blockchain, the digital signature on the blockchain on the one or more nodes;
transmitting, by the one or more nodes comprising the blockchain, the digital signature to the first server computer;
receiving, by the one or more nodes comprising the blockchain from a second server computer, a request comprising the digital signature;
verifying, by the one or more nodes comprising the blockchain, the digital signature received from the second server computer in the request against the digital signature recorded on the blockchain; and
transmitting, by the one or more nodes comprising the blockchain to the second server computer, an indication that the digital signature has been verified, wherein the second server computer thereafter processes a transaction corresponding to the request.