With the maturity of technology development and increasing business demand，as one of the most influential innovation in Fintech domain，blockchain start to impact the conduct and business models of the entire financial industry. Here we present a depth analysis and research on the future blockchain technology development trends and provided solid use cases in financial area worldwide. We mainly focused on the sound business cases in securities sector which could benefit from blockchain adoption. We also provided a future technical roadmap and specification for all business line based on current mainstream blockchain platforms. We also elaborate high-level architecture for securities institutions to build blockchain solutions，which covers infrastructure，technic stack，application platforms and information security. This architecture is the base to build industries-wise standard for blockchain eco-system. We provided detailed solution to build a trusty consortium blockchain based on depth study of key technical and system challenges. There are recommendations and advices which could be leveraged to build industry-wise trusty consortium chain across securities institutions base on our thoroughly study of business and technology details.