近年来，区块链技术在多行业场景中应用落地，作为新型基础设施的区块链，在稳定性、可扩展性、性能以及隐私保护等方面都迎来新的挑战。本报告以介绍蚂蚁区块链在结合“可信硬件技术”实现区块链层面的隐私保护技术为背景，描述在区块链隐私保护基础上构建分布式数字身份系统，并结合终端设备可信执行环境，向应用提供“端到端”的基于“身份”的综合隐私保护和可信计算能力，最后介绍了蚂蚁区块链基于可信硬件技术在金融业务中的应用。
Recently blockchain technology is applied on many industry areas. As a new type of infrastructure，blockchain faces new challenges on stability，scalability，performance and confidentiality etc.. This report is focused on introducing Ant Financial Blockchain which has integrated with confidentiality computing inside Trust Execution Environment（TEE）. Based on Ant Financial Blockchain we built Decentralized Identity（DID） system which combined the client TEE devices and the cloud TEE on the blockchain，so that the system provides an end to end solution to protect privacy of data. At last we introduced several cases leverage on the Ant Financial Blockchain and DID system in the financial area.
