Patent ID: 7567909
Filing Date: 2009-07-28
Classification: G06Q,G07F,H04L

Abstract:
1. A method for transferring a value representing a commodity in an electronic transaction comprising: providing a buyer value note, the buyer value note including a buyer public key, the value, and a first bank signature; appending the buyer value note with a seller public key; endorsing the buyer value note with a buyer endorsement signature such that the buyer endorsement signature is verified with the buyer public key; creating a seller value note, the seller value note including a seller public key and the value; disassociating the buyer public key and the buyer endorsement signature from the seller value note; deleting the buyer public key and the buyer endorsement signature such that the seller value note is anonymous with respect to the buyer value note; and endorsing the seller value note with a second bank signature whereby the value is transferred to the seller.