METHOD FOR MAKING START CONTRACT EXECUTABLE IN BLOCK CHAIN NETWORK, AND NODE

摘要

The present invention enables a smart contract using nondeterministic external data to be deterministically executed in a block chain network. A first node 101 generates a new block from one or a plurality of transactions accumulated in a memory pool (S201). Concerning a transaction that invokes a smart contract, the first node 101 inquires of an external system about the nondeterministic external data used therein and stores the acquired data in a block (S202). The generated block is transmitted as a proposal to a plurality of nodes participating in consensus building (S203) and undergoes verification in each node (S204). Here, the verification is exercised about the external data in addition to verification of the transaction. Subject to the satisfaction of a prescribed condition in the verification process, each node adds the block to the block chain of each node (S205).