Blockchain system, registration terminal, approval terminal, smart contract registration method, and smart contract registration program

摘要

It prevents tampering with ABI information and enables users to safely read data on the blockchain. The registration terminal 1 issues a transaction including the extraction unit 142 that extracts the ABI information for accessing the smart contract from the smart contract, the bytecode generated by compiling the smart contract, and the ABI information. A transaction issuing unit 13 is provided, and the approval terminal 2 generates a verification unit 152 that verifies whether the bytecode can be accessed using the ABI information included in the transaction, and if it is accessible, a block containing the transaction. It includes a block generation unit 154 that reflects the block and the ABI information in the distributed ledger 11 of the terminal of the blockchain system.