Methods and systems for recording data based on plurality of blockchain networks

A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

• in response to receiving data to be recorded, generating, by a node in a first-type blockchain network, a first-type blockchain transaction comprising the data;
• transmitting, by the node in the first-type blockchain network, the first-type blockchain transaction to the first-type blockchain network;
• recording, by the node based on a consensus algorithm, one or more first-type blockchain transactions into a first-type block;
• recording, by the node, the first-type block on a blockchain of the first-type blockchain network;
• determining, by the node, a transaction hash of each of the one or more first-type blockchain transactions in the first-type block;
• receiving, by a target node in a second-type blockchain network and as a received transaction hash, the transaction hash of each of the one or more first-type blockchain transactions;
• generating, by the target node and for each transaction hash, a corresponding second-type blockchain transaction based on the received transaction hash;
• storing, by the target node and for the one or more first-type blockchain transactions, a network identifier of the first-type blockchain network with the received transaction hash as the corresponding second-type blockchain transaction;
• transmitting, by the target node, each second-type blockchain transaction to the second-type blockchain network;
• recording, by the target node based on the consensus algorithm, one or more second-type blockchain transactions into a second-type block;
• recording, by the target node, the second-type block on a blockchain of the second-type blockchain network;
• in response to receiving a verification request, verifying, by the target node in the second-type blockchain network, the data to be recorded is recorded in the first-type blockchain network;
• in response to receiving a query of the corresponding second-type blockchain transaction, sending, by the target node, the transaction hash to the first-type blockchain network based on the network identifier;
• and
• in response to sending the transaction hash to the first-type blockchain network, receiving, by the target node, the first-type blockchain transaction corresponding to the transaction hash of the first-type blockchain network.

A computer-implemented system, comprising:

• one or more computers;
• and
• one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising:
• in response to receiving data to be recorded, generating, by a node in a first-type blockchain network, a first-type blockchain transaction comprising the data;
• transmitting, by the node in the first-type blockchain network, the first-type blockchain transaction to the first-type blockchain network;
• recording, by the node based on a consensus algorithm, one or more first-type blockchain transactions into a first-type block;
• recording, by the node, the first-type block on a blockchain of the first-type blockchain network;
• determining, by the node, a transaction hash of each of the one or more first-type blockchain transactions in the first-type block;
• receiving, by a target node in a second-type blockchain network and as a received transaction hash, the transaction hash of each of the one or more first-type blockchain transactions;
• generating, by the target node and for each transaction hash, a corresponding second-type blockchain transaction based on the received transaction hash;
• storing, by the target node and for the one or more first-type blockchain transactions, a network identifier of the first-type blockchain network with the received transaction hash as the corresponding second-type blockchain transaction;
• transmitting, by the target node, each second-type blockchain transaction to the second-type blockchain network;
• recording, by the target node based on the consensus algorithm, one or more second-type blockchain transactions into a second-type block;
• recording, by the target node, the second-type block on a blockchain of the second-type blockchain network;
• in response to receiving a verification request, verifying, by the target node in the second-type blockchain network, the data to be recorded is recorded in the first-type blockchain network;
• in response to receiving a query of the corresponding second-type blockchain transaction, sending, by the target node, the transaction hash to the first-type blockchain network based on the network identifier;
• and
• in response to sending the transaction hash to the first-type blockchain network, receiving, by the target node, the first-type blockchain transaction corresponding to the transaction hash of the first-type blockchain network.