IP Library › Granted Patent US 12,651,249
Granted Patent B1
US 12,651,249 · App. 18/224,821 · Granted Jun 9, 2026

System, method and program product for depositing and withdrawing stable value digital assets in exchange for fiat

Inventors: Brandon Arvanaghi (New York, NY); Eric Winer (New York, NY); Daniel William Halley James (Brooklyn, NY); Stephen Judkins (Portland, OR); Alex Parkinson (Portland, OR); Cameron Howard Winklevoss (New York, NY); Tyler Howard Winklevoss (New York, NY)
Assignee: Gemini IP, LLC
G06Q20/381G06Q20/389G06Q40/04
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Quick Facts
Patent No.
US 12,651,249
App. No.
18/224,821
Granted
Jun 9, 2026
Kind
B1
Abstract

The present invention generally relates to a method, system and program product for depositing and withdrawing a stable value digital asset tied to a blockchain in exchange for fiat.

Claims (76)

1 . A digital asset exchange computer system associated with a digital asset exchange for withdrawing stable value digital asset tokens based on an underlying digital asset from a digital asset exchange computer system in exchange for fiat, wherein the digital asset exchange comprises:

one or more processors;

non-transitory computer-readable memory operatively connected to the one or more processors and having stored thereon computer-readable instructions to perform the steps of:

authenticating, by the digital asset exchange computer system associated with the digital asset exchange, an access request by a first user device associated with a first user to the digital asset exchange computer system;

receiving, by the digital asset exchange computer system from the first user device, a withdraw request including a first electronic request to withdraw stable value digital asset tokens, wherein each stable value digital asset token is tied to an underlying digital asset which is maintained on a distributed public transaction ledger in the form of a blockchain that is maintained by a blockchain network including a plurality of geographically distributed computer systems in a peer-to-peer network and each stable value digital asset token is issued based on first smart contract instructions provided at a first contract address on the blockchain;

in response to the first electronic request, obtaining, by the digital asset exchange computer system from a fiat account ledger database stored on computer readable member accessible by the digital asset exchange computer system, first account balance information of the first user indicating a first amount of available fiat for the first user held by the digital asset exchange on behalf of the first user;

determining, by the digital asset exchange computer system, a second amount of fiat based on the first amount of stable value digital asset tokens, where the second amount of fiat is determined using a fixed predetermined ratio of stable value digital asset tokens to fiat;

generating, by the digital asset exchange computer system, a first transaction request for the blockchain, from a first digital asset exchange public key address on the blockchain, which is mathematically related to a first digital asset exchange private key, which is stored in the computer readable member accessible by the digital asset exchange computer system, to the first contract address associated with a stable value digital asset token issuer; and

confirming, by the digital asset exchange computer system based on reference to the blockchain, that the first transaction request has been processed by the blockchain network so that a balance of stable value digital asset tokens in a destination public address of the first user includes the first amount of stable value digital asset tokens.

2 . The system of claim 1 , wherein the first transaction request includes:

a request to generate and provide the first amount of stable value digital asset tokens to the destination public address of the first user; and

a digital signature generated using a digital asset exchange private key.

3 . The system of claim 1 , further comprising:

receiving, by the digital asset exchange computer system from the first user device, an authentication request including first user credential information associated with the first user; and

determining, by the digital asset exchange computer system, that the first user device is authorized to access the digital asset exchange computer system based at least in part on the first user credential information.

4 . The system of claim 1 , further comprising:

generating, by the digital asset exchange computer system, first graphical user interface information for displaying a first graphical user interface on the first user device; and

transmitting, from the digital asset exchange computer system to the first user device, the first graphical user interface information.

5 . The system of claim 1 , further comprising receiving, by the digital asset exchange computer system from the first user device, a second electronic withdrawal request comprising at least:

a first amount of stable value digital asset tokens to be withdrawn; and

a destination address on the blockchain to which the first amount of stable value digital asset tokens is provided.

6 . The system of claim 1 , further comprising:

determining, by the digital asset exchange computer system, that the second amount of fiat is less than the first amount of available fiat of the first user;

in cases where the second amount of fiat is less than the first amount of available fiat of the first user, determining a third amount of fiat associated with an updated amount of available fiat of the first user, wherein the third amount of fiat equals the first amount of available fiat of the first user less the second amount of fiat.

7 . The system of claim 6 , further comprising:

updating, by the digital asset exchange computer system, the fiat account ledger database to reflect that the updated amount of available fiat of the first user is the third amount of fiat; and

updating, by the digital asset exchange computer system, a stable value digital asset token issuer fiat ledger, to increase a balance of fiat by the second amount of fiat.

8 . The system of claim 1 , further comprising:

transmitting, by the digital asset exchange computer system to the blockchain network via the Internet, the first transaction request,

wherein, in response to the first transaction request, the blockchain network verifies a digital signature and executes a request to generate and provide the first amount of stable value tokens to the destination public address of the first user.

9 . A computing device comprising:

one or more processors; and

non-transitory computer-readable memory operatively connected to the one or more processors and having stored thereon computer-readable instructions to perform the steps of:

authenticating, by the computing device associated with a digital asset exchange, an access request by a first user device associated with a first user to the computing device;

receiving, by the computing device from the first user device, a withdraw request including a first electronic request to withdraw stable value digital asset tokens, wherein each stable value digital asset token is tied to an underlying digital asset which is maintained on a distributed public transaction ledger in the form of a blockchain that is maintained by a blockchain network including a plurality of geographically distributed computer systems in a peer-to-peer network and each stable value digital asset token is issued based on first smart contract instructions provided at a first contract address on the blockchain;

in response to the first electronic request, obtaining, by the computing device from a fiat account ledger database stored on computer readable member accessible by the computing device, first account balance information of the first user indicating a first amount of available fiat for the first user held by the computing device on behalf of the first user;

determining, by the computing device, a second amount of fiat based on the first amount of stable value digital asset tokens, where the second amount of fiat is determined using a fixed predetermined ratio of stable value digital asset tokens to fiat;

generating, by the computing device, a first transaction request for the blockchain, from a first digital asset exchange public key address on the blockchain, which is mathematically related to a first digital asset exchange private key, which is stored in the computer readable member accessible by the computing device, to the first contract address associated with a stable value digital asset token issuer; and

confirming, by the computing device based on reference to the blockchain, that the first transaction request has been processed by the blockchain network so that a balance of stable value digital asset tokens in a destination public address of the first user includes the first amount of stable value digital asset tokens.

10 . The computing device of claim 9 , wherein the first transaction request includes:

a request to generate and provide the first amount of stable value digital asset tokens to the destination public address of the first user; and

a digital signature generated using a digital asset exchange private key.

11 . The computing device of claim 9 , further comprising:

receiving, by the computing device from the first user device, an authentication request including first user credential information associated with the first user; and

determining, by the computing device, that the first user device is authorized to access the computing device based at least in part on the first user credential information.

12 . The computing device of claim 9 , further comprising:

generating, by the computing device, first graphical user interface information for displaying a first graphical user interface on the first user device; and

transmitting, from the computing device to the first user device, the first graphical user interface information.

13 . The computing device of claim 9 , further comprising receiving, by the computing device from the first user device, a second electronic withdrawal request comprising at least:

a first amount of stable value digital asset tokens to be withdrawn; and

a destination address on the blockchain to which the first amount of stable value digital asset tokens is provided.

14 . The computing device of claim 9 , further comprising:

determining, by the computing device, that the second amount of fiat is less than the first amount of available fiat of the first user;

in cases where the second amount of fiat is less than the first amount of available fiat of the first user, determining a third amount of fiat associated with an updated amount of available fiat of the first user, wherein the third amount of fiat equals the first amount of available fiat of the first user less the second amount of fiat.

15 . A computer implemented method comprising:

authenticating, by a digital asset exchange computer system associated with a digital asset exchange, an access request by a first user device associated with a first user to the digital asset exchange computer system;

receiving, by the digital asset exchange computer system from the first user device, a withdraw request including a first electronic request to withdraw stable value digital asset tokens, wherein each stable value digital asset token is tied to an underlying digital asset which is maintained on a distributed public transaction ledger in the form of a blockchain that is maintained by a blockchain network including a plurality of geographically distributed computer systems in a peer-to-peer network and each stable value digital asset token is issued based on first smart contract instructions provided at a first contract address on the blockchain;

in response to the first electronic request, obtaining, by the digital asset exchange computer system from a fiat account ledger database stored on computer readable member accessible by the digital asset exchange computer system, first account balance information of the first user indicating a first amount of available fiat for the first user held by the digital asset exchange computer system on behalf of the first user;

determining, by the digital asset exchange computer system, a second amount of fiat based on the first amount of stable value digital asset tokens, where the second amount of fiat is determined using a fixed predetermined ratio of stable value digital asset tokens to fiat;

generating, by the digital asset exchange computer system, a first transaction request for the blockchain, from a first digital asset exchange public key address on the blockchain, which is mathematically related to a first digital asset exchange private key, which is stored in the computer readable member accessible by the digital asset exchange computer system, to the first contract address associated with a stable value digital asset token issuer; and

confirming, by the digital asset exchange computer system based on reference to the blockchain, that the first transaction request has been processed by the blockchain network so that a balance of stable value digital asset tokens in a destination public address of the first user includes the first amount of stable value digital asset tokens.

16 . The method of claim 15 , further comprising:

receiving, by the digital asset exchange computer system from the first user device, an authentication request including first user credential information associated with the first user; and

determining, by the digital asset exchange computer system, that the first user device is authorized to access the digital asset exchange computer system based at least in part on the first user credential information.

17 . The method of claim 15 , further comprising:

generating, by the digital asset exchange computer system, first graphical user interface information for displaying a first graphical user interface on the first user device; and

transmitting, from the digital asset exchange computer system to the first user device, the first graphical user interface information.

18 . The method of claim 15 , further comprising receiving, by the digital asset exchange computer system from the first user device, a second electronic withdrawal request comprising at least:

a first amount of stable value digital asset tokens to be withdrawn; and

a destination address on the blockchain to which the first amount of stable value digital asset tokens is provided.

19 . The method of claim 15 , further comprising:

determining, by the digital asset exchange computer system, that the second amount of fiat is less than the first amount of available fiat of the first user;

in cases where the second amount of fiat is less than the first amount of available fiat of the first user, determining a third amount of fiat associated with an updated amount of available fiat of the first user, wherein the third amount of fiat equals the first amount of available fiat of the first user less the second amount of fiat.

20 . The method of claim 19 , further comprising:

updating, by the digital asset exchange computer system, the fiat account ledger database to reflect that the updated amount of available fiat of the first user is the third amount of fiat; and

updating, by the digital asset exchange computer system, a stable value digital asset token issuer fiat ledger, to increase a balance of fiat by the second amount of fiat.

Continuity (8)
Continuation 17247111 · Nov 30, 2020
Continuation 16036469 · Jul 16, 2018
Continuation In Part 16020534 · Jun 27, 2018
Continuation In Part 15960040 · Apr 23, 2018
Provisional Application 62689563 · Jun 25, 2018
Provisional Application 62683412 · Jun 11, 2018
Provisional Application 62660655 · Apr 20, 2018
Provisional Application 62638679 · Mar 5, 2018
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