Patent ID: 11966912
Assignee: AUCTANE, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 10:
11. A system for facilitating cryptographic-chain-based verification of postage transaction records, the system comprising: a customer computer system that comprises:
one or more processors; and
memory storing computer program instructions that, when executed by the one or more processors, cause the customer computer system to perform operations comprising:
obtaining a customer private key associated with a customer from a secure local storage at the customer computer system;
obtaining (i) a first vendor digital signature derived from a first postage transaction record the first postage transaction record relating to a previously executed transaction and (ii) a second postage transaction record different from the first postage transaction record and relating to a subsequent transaction;
creating a customer digital signature based on (i) the customer private key, (ii) the first vendor digital signature, and (iii) the second postage transaction record;
providing the customer digital signature to a vendor computer system associated with a postage vendor; and
responsive to providing the customer digital signature, obtaining a second vendor digital signature from the vendor computer system, the second vendor digital signature being based on (i) a vendor private key associated with the postage vendor and (ii) the customer digital signature.