DAEC is called Digital Advertising Exchange Chain, the full name of the digital advertising transaction chain (referred to as the byte chain). The project is jointly initiated by the digital advertising industry, the media industry elite and the original Huawei cloud technology experts, through blockchain technology and community. The idea of self-government, to create a new generation of digital advertising trading platform, to connect the majority of advertisers, media owners and developers, reduce false traffic and fraud losses, reduce the traffic acquisition cost of advertisers, improve the settlement efficiency of the digital advertising industry, let The maximization of the interests of all parties involved in digital advertising allows the parties involved in advertising to conduct business operations under a truly transparent mechanism.