BLOCKCHAIN-BASED CROSS-CHAIN DATA ACCESS METHOD AND APPARATUS

摘要

One or more implementations of the present specification provide a blockchain-based cross-chain data access method. An access request is sent by a node device of a blockchain in a multi-chain system including a plurality of blockchains. The access request that is specific to target data is received. The access request includes an access path of the target data. The access path indicates a target blockchain that stores the target data in the plurality of blockchains. The target data from the target blockchain is obtained based on the access path. The target data is returned to the node device.