Hacash is a peer-to-peer currency system that inherits Satoshi Nakamoto's vision, offering the same decentralization and security as Bitcoin. However, Hacash(HAC) enables what Bitcoin cannot in a fully decentralized setting: the adjustment of monetary supply as needed to stabilize purchasing power. The currency system comprises three different types of Proof of Work (PoW) coins: HACD, BTC, and HAC. These are fairly distributed without pre-mine or centralized management.