Blockchain data
A coupon-minter is 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. 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 preimage.
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 preimage;
wherein the store-manager is further configured to transfer, to a wallet associated with the clearing-house-manager, the coupon; and
to detect the store-manager's claiming of the coupon, the clearing-house-manager is configured to detect the transfer, to a wallet associated with the clearing-house-manager, the coupon.
2. The system of claim 1 , wherein the coupon-minter, the store-manager, and the clearing-house-manager are each further configured to authenticate records of claims submitted to the blockchain.
3. The system of claim 1 , wherein:
the coupon-minter is further configured to:
receive an order to generate a plurality of coupons, each having the discount information; and
generate a plurality of coupons, including the coupon, each of the plurality of coupons having the discount information and each of the plurality of coupons having a different preimage.
4. The system of claim 1 , wherein to introduce the coupon to the blockchain in association with the hashlock, the coupon-minter is configured to introduce the coupon to the blockchain in a wallet assigned to the coupon-minter.
5. The system of claim 4 , wherein to claim the coupon in the blockchain, the store-manager is configured to move the coupon from the wallet assigned to the coupon-minter to a wallet assigned to the store-manager.
6. The system of claim 5 , wherein to observe the store-manager claim of the coupon, the clearing-house-manager is configured to monitor the wallet assigned to the store-manager.
7. The system of claim 1 , wherein the system is configured to not publicly disclose the discount key or the discount information.
8. A method performed by data processing apparatus, the method comprising:
generating, by a coupon-minter, a coupon comprising encrypted discount information, wherein the encrypted discount information is encrypted with a discount key;
generating, by the coupon-minter, for the coupon, a hashlock from a preimage;
introducing, by the coupon-minter, 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;
detecting, by a clearing-house-manager, a store-manager's claiming of the coupon;
decrypting, by the clearing-house-manager, the encrypted discount key with a clearing-house private key to re-generate the discount key;
decrypting, by the clearing-house-manager, the encrypted discount information with the preimage;
claiming, by the store-manager, the coupon in the blockchain;
encrypting, by the store-manager, the discount key with a clearing-house public key;
updating, by the store-manager, the coupon with the encrypted discount key; and
transferring, by the store-manager, the coupon to a wallet associated with the clearing-house-manager;
wherein detecting the store-manager's claiming of the coupon comprises transferring, by the clearing-house-manager the transfer to a wallet associated with the clearing-house-manager, the coupon.
9. The method of claim 8 , wherein the coupon-minter, the store-manager, and the clearing-house-manager are each further configured to authenticate records of claims submitted to the blockchain.
10. The method of claim 8 , the method further comprises:
receiving, by the coupon-minter, an order to generate a plurality of coupons, each having the discount information; and
generating, by the coupon-minter, a plurality of coupons, including the coupon, each of the plurality of coupons having the discount information and each of the plurality of coupons having a different preimage.
11. The method of claim 8 , wherein introducing the coupon to a blockchain in association with the hashlock further comprises introducing the coupon to the blockchain in a wallet assigned to the coupon-minter.
12. The method of claim 11 , wherein claiming the coupon in the blockchain comprises moving the coupon from the wallet assigned to the coupon-minter to a wallet assigned to the store-manager.
13. The method of claim 12 , wherein to observe the store-manager claim of the coupon, the clearing-house-manager is configured to monitor the wallet assigned to the store-manager.
14. The method of claim 8 , wherein the blockchain is configured to not publicly disclose the discount key or the discount information.
15. A non-transitory computer storage media encoded with computer program instructions that, when executed by one or more processors, cause a computer device to perform operations comprising:
generating, by a coupon-minter, a coupon comprising encrypted discount information, wherein the encrypted discount information is encrypted with a discount key;
generating, by the coupon-minter, for the coupon, a hashlock from a preimage;
introducing, by the coupon-minter, 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;
detecting, by a clearing-house-manager, a store-manager's claiming of the coupon;
decrypting, by the clearing-house-manager, the encrypted discount key with a clearing-house private key to re-generate the discount key; and
decrypting, by the clearing-house-manager, the encrypted discount information with the preimage;
claiming, by the store-manager, the coupon in the blockchain;
encrypting, by the store-manager, the discount key with a clearing-house public key;
updating, by the store-manager, the coupon with the encrypted discount key; and
transferring, by the store-manager, the coupon to a wallet associated with the clearing-house-manager;
wherein detecting the store-manager's claiming of the coupon comprises transferring, by the clearing-house-manager, the transfer, to a wallet associated with the clearing-house-manager, the coupon.
16. The computer storage media of claim 15 , wherein the coupon-minter, the store-manager, and the clearing-house-manager are each further configured to authenticate records of claims submitted to the blockchain.
17. The computer storage media of claim 15 , further comprises:
receiving, by the coupon-minter, an order to generate a plurality of coupons, each having the discount information; and
generating, by the coupon-minter, a plurality of coupons, including the coupon, each of the plurality of coupons having the discount information and each of the plurality of coupons having a different preimage.
18. The computer storage media of claim 15 , wherein introducing the coupon to a blockchain in association with the hashlock further comprises introducing the coupon to the blockchain in a wallet assigned to the coupon-minter.
19. The computer storage media of claim 18 , wherein claiming the coupon in the blockchain comprises moving the coupon from the wallet assigned to the coupon-minter to a wallet assigned to the store-manager.
20. The computer storage media of claim 19 , wherein to observe the store-manager claim of the coupon, the clearing-house-manager is configured to monitor the wallet assigned to the store-manager.
21. The computer storage media of claim 15 , wherein the blockchain is configured to not publicly disclose the discount key or the discount information.