Patent ID: 11900367
Assignee: MASTERCARD INTERNATIONAL INCORPORATED
Field: IT methods for management (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A system for processing offline cryptocurrency transfers, comprising:
a blockchain network;
an external device; and
a computing device including
a memory storing a blockchain wallet having access to an amount of cryptographic currency on a blockchain associated with the blockchain network,
a secure element storing a first public key of a first key pair,
a transmitter communicating with a blockchain node in the blockchain network to request a cryptographically signed issuing transfer message,
a receiver receiving, from the blockchain node in the blockchain network, a first transfer message that is cryptographically signed by the blockchain node using a first private key of the first key pair and is associated with a transfer of cryptographic currency to the computing device that has already been published to the blockchain associated with the blockchain network,
a processor validating the cryptographic signature of the first transfer message using the first public key of the first key pair stored in the secure element of the computing device, wherein said validation ensures that the transfer message will be honored by the blockchain network after an offline transaction is made, and
an input device, wherein
the memory further stores the validated first transfer message,
the input device a transfer instruction, the transfer instruction including at least a communication address,
the processor generates a data container by wrapping the first validated first transfer message with a second transfer message, and
the transmitter electronically transmits the data container to an external device based on at least the communication address.