2.1 Digital asset necessities

Today's blockchain technology has undergone several iterations：

Blockchain 1.0 - Digital Currency, In early 2009, the Bitcoin network was formally launched. As a virtual currency system, the total amount of Bitcoin is limited by the network consensus protocol, and no individual or institution is able to modify the supply and transaction records within it at will. The underlying technology that supports Bitcoin's operation, the blockchain, is actually an extremely clever distributed shared ledger and peer-to-peer value transfer technology that could have a potential impact on finance and even various industries as much as the invention of double-entry bookkeeping.

Blockchain 2.0-Smart Contracts, around 2014, the industry began to recognize the important application value of blockchain technology and attempted to create a shareable technology platform and provide BaaS (Blockchainasservice) services to developers, greatly increasing transaction speed, greatly reducing resource consumption, and supporting a variety of consensus algorithms such as PoW, PoS and DPoS.

Blockchain 3.0-Blockchain application extension, after 2018, with more and more entrants in the blockchain market, especially the entry of many mature Internet companies and real economy enterprises, bringing more technical exploration and field development, the blockchain system is more efficient, scalable and strong, interoperable, as well as with better user experience than before. Its application also further extends to a wider range of applications such as medical and health, IP copyright, education, Internet of Things, sharing economy, communication, social management, charity, culture and entertainment, food commodities, etc.

In the last two years, countries around the world have been taking a positive attitude in the research and development of the underlying blockchain technology and the implementation of combining blockchain with practical application scenarios. With the increased awareness of the scope of application and usability of blockchain technology, people are carrying out the research and development and implementation of the underlying core blockchain technology, on-chain applications and scenario implementation with great enthusiasm.

Research and exploration of blockchain technology has focused on 3 main levels：

1) Underlying technology and infrastructure layer, mainly including basic protocols and blockchain-related hardware content.

2) General application and technology extension layer：Providing services and interfaces and related technical services for the industry vertical application layer. Services provided include smart contracts, fast computing, mining services, information security, data services, BaaS, solutions, anti-counterfeiting traceability, etc..

3) Vertical industry application layer：Landing implementations in verticals such as finance, digital currency, entertainment, supply chain, healthcare, legal, energy, public interest, social, IoT and agriculture.

The value of blockchain technology relies on the digital asset trading link, but as of now, most of the projects in this direction are still in a theoretical perspective, unable to penetrate into the

industry and industry, and the value exchange theory created stays in the stage of technical empirical evidence. Therefore, based on Douglas AMC's business alliance system and industrial empowerment ideas, a new digital financial payment logic will be built to help the real industry to carry out digital transformation and make digital assets become a real necessity.