Patent ID: 11900405
Assignee: VALASSIS COMMUNICATIONS, INC.
Field: IT methods for management (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A system comprising:
a coupon-minter configured to perform operations including:
generating a coupon comprising encrypted discount information, wherein the encrypted discount information is encrypted with a discount key;
generating, for the coupon, a hashlock from a preimage;
introducing the coupon to a blockchain in association with the hashlock, wherein the blockchain is configured to permit claiming of the generated coupon only upon receiving access to the preimage used to generate the hashlock;

a store-manager configured to perform operations including:
claiming, using the preimage, the coupon in the blockchain;
encrypting the discount key with a clearing-house public key;
updating the coupon with the encrypted discount key; and

a clearing-house-manager configured to perform operations comprising:
detecting the store-manager's claiming of the coupon;
decrypting the encrypted discount key with a clearing-house private key to re-generate the discount key; and
decrypting the encrypted discount information with the discount key.