HappyCoin is a project founded by Mr. Phatchaphume Vittiyakorn Wannapuek, an open source (branch on Github), created on the basis of Bitcoin and PPCoin. This is a cryptocurrency, which at the beginning of its usage was a means of payment in retail stores in Thailand, such as vegetables, clothing or other retail goods. Happycoin already provides payment services in South Korea, working under the brand Happy Coin Korea, as a representative in this region is Lee Cham Sarm. After the development of these areas, it is planned to enter the markets of Australia and Europe. The main distinctive feature of the project is the hybrid mechanism of consensus PoW (Proof-of-work) / PoS (Proof-of-stake). PoW blocks are searched on a par with PoS blocks, i.e. The blockchain consists of both types of blocks. It allows HPC cryptocurrency mining equipped with an X11 hashing algorithm, used for example in Dash, and get 5% per annum for keeping some amount of HPC on user’s wallet.