ATMChain is an intelligent, trustable and open digital media ecology. It is the innovative application of blockchain technology in the field of digital media. ATMChain uses ATM (Attention Token of Media) token to realize value quantification and value circulation in ecology. The mature blockchain application ecology of ATMChain encapsulates the bottom- layer capability into API interface and provides various functionalities like free access to digital media information, smart contract management, automatic token distribution and data interoperation, etc. ATMChain takes digital media advertising as the core. Based on blockchain network, it covers the digital media culture ecology of the industries like ticketing cinema, cultural entertainment, sociality, We-Media, etc., using media screen, it collects numerous surrounding information to support big data analysis artificial intelligence techniques and it further expands more interactive scenes of media screens, aiming to create top-ranking digital media culture ecology.