Electronic Settlement System And Electronic Settlement Method

Abstract: In the present invention, a transaction has: lock release information including an electronic signature of an issuer; and a lock release condition including a public key of a transactor. A first transaction consists of a record which holds a plurality of successive lock release conditions. A lock release condition of the first transaction includes public key information pertaining to an electronic signature different from the electronic signature of the issuer of the transaction. An asset/fund settlement device posts the first transaction in a ledger and determines executability of a second transaction issued after the first transaction by comparing, in accordance with the order of the plurality of successive lock release conditions, the lock release information and the lock release condition which have been posted in the ledger to lock release information and a lock release condition in a ledger of the second transaction. Thus, in a DvP transaction using electronic settlement, locked assets are safely returned, and deterioration in liquidity of assets/funds is avoided when the transaction is not established.

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