NON-REPUDIATION CROSS-CHAIN TRANSACTION METHOD AND BLOCKCHAIN SYSTEM

摘要

A non-repudiation cross-chain transaction method and a blockchain system. The method comprises: a public chain creates a cross-chain transaction; an initiation parallel chain forwards a first lock request to a transaction initiation chain; the transaction initiation chain completes a service transaction and locks the transaction content of the service transaction according to the first lock request; a target parallel chain forwards a second lock request to a transaction target chain; the transaction target chain completes a return transaction and locks the transaction content of the return transaction according to the second lock request; if it is determined that both the service transaction and the return transaction are completed, the public chain instructs the transaction initiation chain to unlock the transaction content of the service transaction, and the transaction target chain to unlock the transaction content of the return transaction. In the present application, the public chain instructs the transaction initiation chain and the transaction target chain to lock their respective transaction content, and then unlock the transaction content when both parties complete the transaction, so as to avoid losses of one party caused by the other party's incompletion of the transaction and achieve a non-repudiation transaction effect, thereby ensuring that the cross-chain transaction can be completed safely.