At dollar is based on P2P technology, without the need of a central management agency or bank. The At dollar network distributes and manages the transactions all together. At dollar is open source; its design is open, anyone from anywhere can participate. It can provide instantaneous and cost free transaction to anywhere in the world and be used by anyone or institution. Rigorous cryptographic protocol is fully protecting the financial security of every user on the network. At dollar draws the strengths of Bitcoin’s encryption monetary system, and improved upon its weakness. It provides faster transaction confirmation time, increased network capacity and efficiency of transactions, which Bitcoin do not have in its value scale. Therefore, At dollar could become a generally accepted universal discount coupon by merchants and consumers.