Method and system for exchange of value or tokens between blockchain networks

A blockchain value transfer method comprising:

• receiving from a sending client a request to transfer value in a form of at least one of a cryptocurrency and a token at a network communication device, defining a transfer request, the transfer requesting being one of intra-chain defining a combined sending and receiving blockchain network, and inter-chain defining a sending blockchain network and a receiving blockchain network;
• transmitting to the sending client a response to the transfer request, the response comprising a raw transaction using the network communication device;
• receiving from the sending dent a response to the raw transaction wherein a private key of a user is used to sign the raw transaction at the network communication device, defining a signed transaction;
• verifying a signature of the signed transaction using the processor;
• where transfer request is intra-chain, broadcasting the signed transaction to the combined sending and receiving blockchain network using the network communication device;
• and
• where the transfer request is inter-chain;
• receiving a value transfer responsive at the network communication device to the broadcasting of the signed transaction from an account associated with the sending client on the sending blockchain network at a first blockchain client for the sending blockchain network;
• sending the content of the value transfer to an exchange using the network communication device;
• receiving an exchanged value transfer from the exchange at the network communication device;
• and
• sending the exchanged value transfer using the network communication device to an account associated with a receiving user on the receiving blockchain network from a second blockchain client for the receiving blockchain network.

A system for executing blockchain value transfers comprising:

• a processor;
• a data store positioned in communication with the processor;
• and a network communication device positioned in communication with each of the processor, the data store, and a network;
• wherein the network communication device is operable to receive from a sending client a request to transfer value in a form of at least one of a cryptocurrency and a token, defining a transfer request, the transfer requesting being one of intra-chain defining a combined sending and receiving blockchain network, and inter-chain defining a sending blockchain network and a receiving blockchain network;
• wherein the network communication device is operable to transmit to the sending client a response to the transfer request, the response comprising a raw transaction, the raw transaction being intra-chain if the transfer request is intra-chain and inter-chain if the transfer request is inter-chain;
• wherein the network communication device is operable to receive from the sending client a response to the raw transaction wherein a private key of a user is used to sign the raw transaction, defining a signed transaction, the signed transaction being intra-chain if the raw transaction is intra-chain and inter-chain if the raw transaction is inter-chain;
• wherein the processor is operable to verify a signature of the signed transaction;
• wherein the network communication device is operable to broadcast the signed transaction to the combined sending and receiving blockchain network if the signed transaction is intra-chain or to each of the sending blockchain network and the receiving blockchain network if the signed transaction is inter-chain;
• and
• where the signed transaction is inter-chain, the network communication device is operable to:
• receive a value transfer responsive to the broadcasting of the signed transaction from an account associated with the sending client on the sending blockchain network at a first blockchain client for the sending blockchain network;
• send the content of the value transfer to an exchange;
• receive an exchanged value transfer from the exchange;
• and send the exchanged value transfer to an account associated with a receiving user on the receiving blockchain network from a second blockchain client for the receiving blockchain network.