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    Method and system for verification of identity attribute information
    14.
    发明授权
    Method and system for verification of identity attribute information 有权

    公开(公告)号：US12170732B2

    公开(公告)日：2024-12-17

    申请号：US18242901

    申请日：2023-09-06

    Applicant: Mastercard International Incorporated

    Inventor： Steven C. Davis

    IPC: H04L9/32 ,  G06Q20/02 ,  G06Q20/06 ,  G06Q20/38 ,  H04L9/00 ,  H04L9/06 ,  H04L9/40

    Abstract: A method for verification of a data value via a Merkle root includes: storing, in a memory of a processing server, a Merkle root; receiving at least a data value, a nonce, and a plurality of hash path values; generating a combined value by combining the data value and the nonce; generating a first hash value via application of a hashing algorithm to the combined value; generating a subsequent hash value via application of the hashing algorithm to a combination of the first hash value and a first of the plurality of hash path values; repeating generation of the subsequent hash value using a combination of the next hash path value of the plurality of hash path values and the most recent subsequent hash value; and verifying the data value based on a comparison of the Merkle root and the last generated subsequent hash value.

    Method and system for distribution of a consistent ledger across multiple blockchains
    15.
    发明授权
    Method and system for distribution of a consistent ledger across multiple blockchains 有权

    公开(公告)号：US11849022B2

    公开(公告)日：2023-12-19

    申请号：US17874514

    申请日：2022-07-27

    Applicant: Mastercard International Incorporated

    Inventor： Steven C. Davis ,  Rakesh Yadav

    IPC: H04L9/06 ,  H04L9/00

    CPC classification number: H04L9/0637 ,  H04L9/0643 ,  H04L9/50 ,  H04L2209/56

    Abstract: A method for maintaining a consistent blockchain ledger for storing commitments across multiple separate blockchains includes: storing a blockchain comprised of a plurality of blocks, each block including at least a block header and one or more blockchain data values; receiving a base commitment from a first node, where the first node is included in a first blockchain network; generating a first new block including at least a first block header and the received base commitment; storing the first new block in the blockchain; receiving a state commitment from an additional node included in each of at least two additional blockchain networks; generating an additional new block including at least an additional block header and each received state commitment; and storing the additional new block in the blockchain.

    Method and system for the atomic exchange of blockchain assets using transient key pairs
    17.
    发明授权
    Method and system for the atomic exchange of blockchain assets using transient key pairs 有权

    公开(公告)号：US11689355B2

    公开(公告)日：2023-06-27

    申请号：US17192194

    申请日：2021-03-04

    Applicant: MASTERCARD INTERNATIONAL INCORPORATED

    Inventor： Steven C. Davis

    IPC: H04L9/06 ,  H04L9/30 ,  G06Q20/40 ,  H04L9/32 ,  H04L9/00

    CPC classification number: H04L9/0643 ,  G06Q20/401 ,  H04L9/30 ,  H04L9/3247 ,  H04L9/50

    Abstract: A method for atomic exchange of assets on multiple blockchains using transient key pairs includes: generating, by a first computing device, a proposal message, the proposal message including at least a first transaction value, a first network identifier corresponding to a first blockchain, a second transaction value, a second network identifier corresponding to a second blockchain, and a swap public key of a swap cryptographic key pair; generating, by the first computing device, a first digital signature for the proposal message; encrypting, by the first computing device, the first digital signature using the swap public key and a first private key of a first cryptographic key pair; appending, by the first computing device, the encrypted first digital signature to the generated proposal message; and transmitting, by the first computing device, the generated proposal message with appended encrypted first digital signature to a second computing device.

    Method and system for quantum-resistant hashing scheme
    18.
    发明授权
    Method and system for quantum-resistant hashing scheme 有权

    公开(公告)号：US11626999B2

    公开(公告)日：2023-04-11

    申请号：US17317456

    申请日：2021-05-11

    Applicant: MASTERCARD INTERNATIONAL INCORPORATED

    Inventor： Steven C. Davis ,  Paul Taylor ,  Eduardo Andrade

    IPC: H04L9/40 ,  H04L9/32 ,  H04L9/06 ,  H04L9/08 ,  H04L9/00

    Abstract: A method for moderation in a permissioned blockchain using a hash-oriented scheme includes: storing a blockchain including a most recent block; receiving transaction data values; receiving a first reference value and a second reference value; generating a first hash value by hashing the first reference value; generating a block proof including the first hash value, a second hash value, a third reference value, and a block value; verifying a block header of the most recent block using the block proof; receiving a new block value; generating a new block header including the first reference value, the second reference value, a fourth reference value, and the new block value; generating a new block for the blockchain including the new block header and the transaction data values; and transmitting the new block to one or more additional nodes associated with the blockchain.

    Method and system for distribution of a consistent ledger across multiple blockchains
    19.
    发明授权
    Method and system for distribution of a consistent ledger across multiple blockchains 有权

    公开(公告)号：US11431473B2

    公开(公告)日：2022-08-30

    申请号：US16576915

    申请日：2019-09-20

    Applicant: MASTERCARD INTERNATIONAL INCORPORATED

    Inventor： Steven C. Davis ,  Rakesh Yadav

    IPC: H04L9/06

    Abstract: A method for maintaining a consistent blockchain ledger for storing commitments across multiple separate blockchains includes: storing a blockchain comprised of a plurality of blocks, each block including at least a block header and one or more blockchain data values; receiving a base commitment from a first node, where the first node is included in a first blockchain network; generating a first new block including at least a first block header and the received base commitment; storing the first new block in the blockchain; receiving a state commitment from an additional node included in each of at least two additional blockchain networks; generating an additional new block including at least an additional block header and each received state commitment; and storing the additional new block in the blockchain.

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