Entertainment platform "PlayMining" is committed to allowing users to enjoy cryptocurrency rewards while enjoying games and comic resources on the platform for free. The characters and items appearing in the works will be sold as "digital assets", and the Digital Art Auction will be developed for secondary transactions between users. Digital Art Auction uses a private blockchain of ERC721 to securely manage users' cryptocurrencies. DEP, the only currency based on ERC20, is traded as a transaction currency, and part of the assets will be returned to content creators. The concept of distributing cryptocurrencies to users can attract a large number of users from all over the world to participate, thereby creating an economic zone of DEP.