Patent ID: 11949670
Assignee: MASTERCARD INTERNATIONAL INCORPORATED
Field: IT methods for management (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 4:
5. A method for use of a digital certificate in an anonymous blockchain transaction, comprising:
storing, in a memory of a computing device, at least a server public key, a confidence threshold, one or more source addresses, and a cryptographic key pair comprised of a user public key and a user private key, wherein the confidence threshold is based on a user confidence level associated with the computing device;
receiving, by a receiving device of the computing device, at least a recipient address and a signed digital certificate from a secondary computing device, wherein the signed digital signature includes at least a confidence level associated with the recipient address;
verifying, by a verification module of the computing device, a digital signature of the signed digital certificate using the server public key;
generating, by a generation module of the computing device, a user signature over a blockchain transaction using the user private key, wherein the blockchain transaction includes at least the one or more source addresses, the recipient address, and a transaction amount; and
electronically transmitting, by a transmitting device of the computing device, the blockchain transaction and user signature to a node associated with a blockchain, wherein
the user signature and the blockchain transaction are electronically transmitted if the confidence level associated with the recipient address included in the signed digital certificate is equal to or above the confidence threshold that is based on the user confidence level associated with the computing device.