Patent ID: 9245260
Filing Date: 2016-01-26
CPC Classification: G06F,G06Q,G06T,G07F,H04L,H04N

Claim Text:
1. A method, comprising: receiving, at a computer system, encrypted digital cash that is redeemable for a first amount of cash; decrypting the encrypted digital cash, wherein the decrypting is performed using the computer system and a first crypt key; adjusting the decrypted digital cash to produce digital cash redeemable for a second amount of cash, wherein the adjusting is performed using the computer system in response to a request for a quantity of money; generating, using the computer system, a second crypt key that is different from the first crypt key; encrypting the digital cash redeemable for the second amount, wherein the encrypting is performed using the computer system and the second crypt key; storing a residual amount of digital cash from the adjusting; and transmitting the encrypted digital cash redeemable for the second amount to an entity that issued the request for the quantity of money, wherein the transmitting includes transmitting the second crypt key to the entity via a bank of the entity.