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    METHOD AND SYSTEM FOR MERCHANT ACCEPTANCE OF CRYPTOCURRENCY VIA PAYMENT RAILS
    1.
    发明申请
    METHOD AND SYSTEM FOR MERCHANT ACCEPTANCE OF CRYPTOCURRENCY VIA PAYMENT RAILS 审中-公开

    公开(公告)号：WO2021262089A1

    公开(公告)日：2021-12-30

    申请号：PCT/SG2021/050282

    申请日：2021-05-24

    Applicant: MASTERCARD ASIA/PACIFIC PTE. LTD.

    Inventor： RAVINATHAN, Srinath ,  HUANG, Donghao

    IPC: G06Q20/38 ,  G06Q40/04 ,  G06Q20/20 ,  G06Q20/065 ,  G06Q20/381 ,  G06Q20/3825 ,  G06Q20/3829 ,  G06Q20/401 ,  G06Q2220/00 ,  H04L2209/38 ,  H04L2209/56 ,  H04L9/0637

    Abstract: A method for acceptance of blockchain payment at a traditional point of sale device through issuer processing includes: receiving an authorization request for a fiat payment transaction originating from a point of sale device and routed through a payment network, the authorization request including a transaction account number and transaction amount; identifying blockchain payment acceptance for a transaction account associated with the transaction account number; receiving a destination address for an electronic wallet associated with a blockchain network; transmitting a new blockchain transaction to a blockchain node in the blockchain network including the destination address and a cryptocurrency amount based on the transaction amount; receiving a transaction identifier from the blockchain node; and transmitting an authorization response for the fiat payment transaction to the payment network for routing to the point of sale device including an indication of approval of the fiat payment transaction and the transaction identifier.

    METHOD AND SYSTEM FOR USE OF AN EMV CARD IN A MULTI-SIGNATURE WALLET FOR CRYPTOCURRENCY TRANSACTIONS
    3.
    发明申请
    METHOD AND SYSTEM FOR USE OF AN EMV CARD IN A MULTI-SIGNATURE WALLET FOR CRYPTOCURRENCY TRANSACTIONS 审中-公开

    公开(公告)号：WO2021206626A1

    公开(公告)日：2021-10-14

    申请号：PCT/SG2021/050120

    申请日：2021-03-09

    Applicant: MASTERCARD ASIA/PACIFIC PTE. LTD.

    Inventor： RAVINATHAN, Srinath ,  JOYSON, Bensam ,  HUANG, Donghao ,  TAN, Teck Yong

    IPC: H04L9/32 ,  G06Q20/40 ,  G06F21/62

    Abstract: A method for carrying out a cryptocurrency blockchain transaction through an integrated circuit payment card using a multi-signature blockchain wallet includes: storing, in an integrated circuit of a payment card, a first private key of a first cryptographic key pair and a transaction account number; receiving, by the integrated circuit, a blockchain transaction from a point of sale device, the blockchain transaction including unspent transaction outputs, destination addresses, a cryptocurrency amount for each destination address, and a first digital signature generated using a second private key of a second cryptographic key pair; digitally signing, by the integrated circuit, the blockchain transaction using the first private key to generate a second digital signature; and transmitting, by the integrated circuit, the digitally signed blockchain transaction including the first digital signature and the second digital signature to the point of sale device.

    METHODS AND SYSTEMS FOR GENERATING AND VALIDATING TRANSACTIONS ON A DISTRIBUTED LEDGER
    4.
    发明申请
    METHODS AND SYSTEMS FOR GENERATING AND VALIDATING TRANSACTIONS ON A DISTRIBUTED LEDGER 审中-公开

    公开(公告)号：WO2023075685A2

    公开(公告)日：2023-05-04

    申请号：PCT/SG2022/050759

    申请日：2022-10-25

    Applicant: MASTERCARD ASIA/PACIFIC PTE. LTD.

    Inventor： RAVINATHAN, Srinath

    IPC: G06Q20/10 ,  G06Q20/30 ,  H04L9/00

    Abstract: Disclosed is a method of releasing a locked transaction encoded in a smart contract on a distributed ledger network. The locked transaction is locked by at least one hash lock condition requiring matching to a hash. The method involves: receiving entry of a passcode associated with the locked transaction: transmitting a request to generate a first hash to a contactless payment device and receiving the first hash from that device; generating a second hash based on the first hash and transaction-specific data; and transmitting an unlock request comprising the second hash and an address of the smart contract on the distributed ledger network, to a node of that network. The unlock request causes the smart contract to release the locked transaction on matching of the second hash against the hash of the hash lock condition.

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