IP Library › Granted Patent US 12,579,525
Granted Patent B2
US 12,579,525 · App. 19/314,888 · Granted Mar 17, 2026

Cryptographic token with separate circulation groups

Inventors: Caitlin Frances Long (Cheyenne, WY); Bryan Allen Bishop (Austin, TX); Zev Naftali Shimko (San Francisco, CA); Britney Dawn Reddy (Cheyenne, WY); Charles Daniel Thompson (New York, NY)
Assignee: Custodia Band, Inc.
G06Q20/0658G06Q20/3678G06Q20/389
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Quick Facts
Patent No.
US 12,579,525
App. No.
19/314,888
Granted
Mar 17, 2026
Kind
B2
Abstract

A custom cryptographic token and smart contract that is configured to exist in one of two groups and is issued by the same bank or depository institution that also collects corresponding fiat currency deposits. The two groups are a circulation group and a non-circulation group. The non-circulation group is not associated with any given user, but rather an issuing entity. Custom cryptographic tokens residing in the circulation group are associated with a user and are traded according to smart contract protocol.

Claims (52)

1 . A method of linking a cryptographic token with fiat currency deposits, comprising:

providing a first smart contract that generates cryptographic tokens as data constructs that are subject to rules of the first smart contract, said rules configured upon execution of the first smart contract to cause the cryptographic tokens to exist in either a circulation group or a non-circulation group, cryptographic tokens existing in the circulation group being associated with a first cryptographic wallet of at least one user of an issuer, wherein cryptographic tokens of the non-circulation group cannot be associated with a user cryptographic wallet due to protocol limitations of the first smart contract;

receiving, by at least one entity associated with an administrator of the first smart contract, a fiat currency deposit of a first amount from at least one account holder, such that both the fiat currency deposit and the cryptographic tokens are associated with the at least one entity associated with the administrator of the first smart contract;

issuing to the at least one account holder, associated with the fiat currency deposit, a first quantity of the cryptographic tokens that is in one-to-one correspondence with the first amount, said issuing conducted via a first immutable blockchain transaction based on a protocol delineated in the first smart contract that causes the first quantity of the cryptographic tokens to shift association from the non-circulation group to the circulation group;

receiving, by the at least one entity associated with the administrator of the first smart contract from the at least one user, a second quantity of the cryptographic tokens via a second immutable blockchain transaction, said receiving based on the protocol delineated in the first smart contract and causing dissociation from the first cryptographic wallet and a shift in association of the second quantity of the cryptographic tokens from the circulation group to the non-circulation group;

in response to receipt of the second quantity of the cryptographic tokens, transferring, to the at least one user, fiat currency corresponding to the second quantity of the cryptographic tokens on a one-to-one basis; and

in response to completion of the shift in association of the second quantity of the cryptographic tokens from the circulation group to the non-circulation group, initiating a burn function of the first smart contract on the second quantity of cryptographic tokens.

2 . The method of claim 1 , wherein the fiat currency deposit is performed as an exchange and the fiat currency is not associated with the at least one account holder by the at least one entity associated with the administrator of the first smart contract.

3 . The method of claim 1 , wherein the first immutable blockchain transaction is implemented via a cryptocurrency underlying the first smart contract, the cryptocurrency independent of the cryptographic tokens.

4 . The method of claim 1 , further comprising:

minting the first quantity of cryptographic tokens of the first smart contract, and allocating each newly minted cryptographic tokens into the non-circulation group via protocol limitations of the first smart contract.

5 . The method of claim 1 , further comprising:

transferring, by the at least one user, the first quantity of cryptographic tokens from the first cryptographic wallet to a second cryptographic wallet data construct associated with another user via a third immutable blockchain transaction based on the protocol delineated in the first smart contract.

6 . The method of claim 1 , wherein the first cryptographic wallet is a custodial wallet controlled by the at least one entity associated with the administrator of the first smart contract.

7 . The method of claim 1 , further comprising:

broadcasting, by the at least one entity associated with the administrator of the first smart contract, events via immutable blockchain transactions that cause the first smart contract to initiate burn or mint actions.

8 . A method of linking a cryptographic token with fiat currency deposits, comprising:

providing a first smart contract that generates cryptographic tokens as data constructs that are subject to rules of the first smart contract, said rules configured upon execution of the first smart contract to cause the cryptographic tokens to exist in either a circulation group or a non-circulation group, cryptographic tokens existing in the circulation group being associated with a first cryptographic wallet of at least one user of an issuer;

minting a first quantity of cryptographic tokens of the first smart contract, and allocating each newly minted cryptographic tokens into the non-circulation group via protocol limitations of the first smart contract;

receiving, by at least one entity associated with an administrator of the first smart contract, a fiat currency deposit of a first amount from at least one account holder, such that both the fiat currency deposit and the cryptographic tokens are associated with the at least one entity associated with the administrator of the first smart contract;

issuing to the at least one account holder, associated with the fiat currency deposit, the first quantity of cryptographic tokens that is in one-to-one correspondence with the first amount, said issuing conducted via a first immutable blockchain transaction based on a protocol delineated in the first smart contract that causes the first quantity of cryptographic tokens to shift association from the non-circulation group to the circulation group;

receiving, by the at least one entity associated with the administrator of the first smart contract from the at least one user, a second quantity of cryptographic tokens via a second immutable blockchain transaction, said receiving based on the protocol delineated in the first smart contract and causing dissociation from the first cryptographic wallet and a shift in association of the second quantity of cryptographic tokens from the circulation group to the non-circulation group; and

in response to receipt of the second quantity of cryptographic tokens, transferring, to the at least one user, fiat currency corresponding to the second quantity of cryptographic tokens on a one-to-one basis.

9 . The method of claim 8 , wherein the first immutable blockchain transaction is implemented via a cryptocurrency underlying the first smart contract, the cryptocurrency independent of the cryptographic tokens.

10 . The method of claim 8 , wherein the fiat currency deposit is performed as an exchange and the fiat currency is not associated with the at least one account holder by the at least one entity associated with the administrator of the first smart contract.

11 . The method of claim 8 , wherein cryptographic tokens of the non-circulation group cannot be associated with a user cryptographic wallet due to protocol limitations of the first smart contract.

12 . The method of claim 8 , wherein the first cryptographic wallet is a custodial wallet controlled by the at least one entity associated with the administrator of the first smart contract.

13 . The method of claim 8 , further comprising:

broadcasting, by the at least one entity associated with the administrator of the first smart contract, events via immutable blockchain transactions that cause the first smart contract to initiate burn or mint actions.

14 . The method of claim 8 , further comprising:

in response to completion of the shift in association of the second quantity of cryptographic tokens from the circulation group to the non-circulation group, initiating a burn function of the first smart contract on the second quantity of cryptographic tokens.

15 . The method of claim 8 , further comprising:

transferring, by the at least one user, the first quantity of cryptographic tokens from the first cryptographic wallet to a second cryptographic wallet data construct associated with another user via a third immutable blockchain transaction based on the protocol delineated in the first smart contract.

16 . A computing device configured to link a cryptographic token with fiat currency deposits, comprising:

a processor; and

a non-transitory computer-readable medium having stored thereon instructions that, when executed by the processor, cause the processor to perform operations including:

providing a first smart contract that generates cryptographic tokens as data constructs that are subject to rules of the first smart contract, said rules configured upon execution of the first smart contract to cause the cryptographic tokens to exist in either a circulation group or a non-circulation group, cryptographic tokens existing in the circulation group being associated with a first cryptographic wallet of at least one user of an issuer;

minting a first quantity of cryptographic tokens of the first smart contract, and allocating each newly minted cryptographic tokens into the non-circulation group via protocol limitations of the first smart contract;

receiving, by at least one entity associated with an administrator of the first smart contract, a fiat currency deposit of a first amount from at least one account holder, such that both the fiat currency deposit and the cryptographic tokens are associated with the at least one entity associated with the administrator of the first smart contract;

issuing to the at least one account holder, associated with the fiat currency deposit, the first quantity of cryptographic tokens that is in one-to-one correspondence with the first amount, said issuing conducted via a first immutable blockchain transaction based on a protocol delineated in the first smart contract that causes the first quantity of cryptographic tokens to shift association from the non-circulation group to the circulation group;

receiving, by the at least one entity associated with the administrator of the first smart contract from the at least one user, a second quantity of cryptographic tokens via a second immutable blockchain transaction, said receiving based on the protocol delineated in the first smart contract and causing dissociation from the first cryptographic wallet and a shift in association of the second quantity of cryptographic tokens from the circulation group to the non-circulation group; and

in response to receipt of the second quantity of cryptographic tokens, transferring, to the at least one user, fiat currency corresponding to the second quantity of cryptographic tokens on a one-to-one basis.

17 . The computing device of claim 16 , wherein the first immutable blockchain transaction is implemented via a cryptocurrency underlying the first smart contract, the cryptocurrency independent of the cryptographic tokens.

18 . The computing device of claim 16 , wherein the fiat currency deposit is performed as an exchange and the fiat currency is not associated with the at least one account holder by the at least one entity associated with the administrator of the first smart contract.

19 . The computing device of claim 16 , wherein cryptographic tokens of the non-circulation group cannot be associated with a user cryptographic wallet due to protocol limitations of the first smart contract.

20 . The computing device of claim 16 , wherein the first cryptographic wallet is a custodial wallet controlled by the at least one entity associated with the administrator of the first smart contract.

21 . The computing device of claim 16 , the instructions further comprising:

broadcasting, by the at least one entity associated with the administrator of the first smart contract, events via immutable blockchain transactions that cause the first smart contract to initiate burn or mint actions.

22 . The computing device of claim 16 , the instructions further comprising:

in response to completion of the shift in association of the second quantity of cryptographic tokens from the circulation group to the non-circulation group, initiating a burn function of the first smart contract on the second quantity of cryptographic tokens.

23 . The computing device of claim 16 , the instructions further comprising:

transferring, by the at least one user, the first quantity of cryptographic tokens from the first cryptographic wallet to a second cryptographic wallet data construct associated with another user via a third immutable blockchain transaction based on the protocol delineated in the first smart contract.

Assignments (3)
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE LISTED AS VANTI FINANCIAL GROUP, INC. TO BE CORRECTED TO LIST ASSIGNEE AS AVANTI FINANCIAL GROUP, INC. PREVIOUSLY RECORDED ON REEL 72533 FRAME 847. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Jan 15, 2026
From: LONG, CAITLIN FRANCES; BISHOP, BRYAN ALLEN; SHIMKO, ZEV NAFTALI; REDDY, BRITNEY DAWN; THOMPSON, CHARLES DANIEL
To: AVANTI FINANCIAL GROUP, INC.
Reel/Frame 074383/0116 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 10, 2025
From: LONG, CAITLIN FRANCES; BISHOP, BRYAN ALLEN; SHIMKO, ZEV NAFTALI; REDDY, BRITNEY DAWN; THOMPSON, CHARLES DANIEL
To: VANTI FINANCIAL GROUP, INC.
Reel/Frame 072533/0847 →
CHANGE OF NAME Recorded Oct 10, 2025
From: AVANTI FINANCIAL GROUP, INC.
To: CUSTODIA BANK, INC.
Reel/Frame 073061/0800 →
Continuity (4)
Continuation 18335442 · Jun 15, 2023
Continuation 17339790 · Jun 4, 2021
Provisional Application 63057057 · Jul 27, 2020
Related Publication 20250384413A1 · Dec 18, 2025
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