This paper focuses on the risks of fraud, credit risk, market risk and central institutions in traditional financial markets, as well as the main problems faced by blockchain technology in financial services such as supply chain finance, trade finance, credit reporting, transaction clearing, insurance, and securities. The problem, through the research and analysis of the basic model and composition technology of the block chain, proposes that the future blockchain technology in the financial field innovation and development direction is the block chain technology and distributed security authentication technology, artificial intelligence technology, security cloud storage technology and big data processing technology are effectively combined to design a financial service and management platform based on block chain.

The blockchain technology studied in this paper is a distributed data security and service technology that integrates information security, artificial intelligence, distributed cloud storage and big data analysis. Blockchain technology can be applied in many fields such as international settlement, equity trading, insurance services, digital rights, financial technology, and electronic payment etc. Through the research and analysis of the basic model and composition technology of blockchain, this paper proposes that the future innovation and development direction of blockchain technology in the financial field is distributed security authentication technology, artificial intelligence technology, security cloud storage technology and big data processing technology are effectively combined with the blockchain technology to design a financial service and management platform.

The establishment of credit system based on blockchain technology in Guangdong-Hongkong-Macao Greater Bay Area (GHMGBA) is a modern and new digital co-governance credit model under the mode of social co-governance. Under the impact of global fintech innovation, the economic and social development needs to establish a new co-governance credit model to replace the traditional indirect credit model. In this paper, distributed security authentication technology, artificial intelligence technology, security of cloud storage technology and big data processing technology are effectively combined with blockchain technology, to establish a distributed and co-governance credit system, and to realize the credit records, credit investigation, credit collection, credit evaluation, and to realize automation and intelligent of the whole management of credit system, to realize the advantages of high distribution, high availability, tamper-proof, verifiability, high scalability, openness and sharability of credit information , to provide innovation and development paths for green, inclusive and intelligent financial services.