FIELD: currency transactions.
SUBSTANCE: invention relates to the method and system for executing non-fiat currency transactions in the card infrastructure. In the method a part of the signature of a cryptocurrency transaction, the key for encryption of which is known only on the payment instrument and the issuer is encrypted on a payment instrument, the data necessary for forming an authorization request are transmitted, including the encrypted part of the signature of the cryptocurrency transaction on the service point of payment instruments where an authorization request is formed and sent to the acquirer host which sends it to the processing centre of the payment instrument in which the number of the payment instrument for calculations in the cryptocurrency is obtained which is used to generate the missing part of the signature of the cryptocurrency transaction and to route an authorization request that includes both parts of the signature of the cryptocurrency transaction to the card issuer corresponding to this payment instrument number where a cryptocurrency transaction is formed which is sent to the issuer’s account address in the blockchain from which the credit confirmation is received, the issuer then sends a positive response to an authorization request to the acquirer host.
EFFECT: technical result consists in increasing security of executing transactions.
10 cl, 2 dwg
