关键词: 现代服务业, 可信交易, 可信交易完备性, 身份验证, 回滚机制, ABS业务

Abstract: Trusted transaction is the core and foundation of the modern service industry. In the past, the biggest problem in digital trading was that after the false transaction occurred, the transaction rollback, and then spread through DVP (delivery versus payment), resulting in losses to other parties more than both sides of the transaction. In addition, transactions in the modern service industry involve multiple parties and stages. A complete application layer transaction needs to be supported by multiple transaction consensus in the blockchain. The current research still focuses on the optimization of the underlying transaction consensus and lacks the discussion of vertical correspondence mode. Aiming at the two key problems of the trusted transaction, a design of trusted transaction completeness mode based on blockchain is proposed. The traceability and tamperproof characteristics of blockchain are used to ensure the security in the transaction process. Using authentication to control the attack of malicious nodes can better protect the privacy and security of users. Join the rollback mechanism to ensure the security of digital assets of multiparty to the transaction. Finally, the corresponding design of application layer completeness and blockchain transaction is used to illustrate the rationality of this model through ABS business (assetbacked securities).

Key words: modern service industry, trusted transaction, complement of trusted transaction, authentication, rollback mechanism, ABS business