Metal is a blockchain-based system utilizing Proof-of-Processed-Payments to identify users, rewarding them for converting legacy fiat currency into cryptocurrency. It is a system similar to bitcoin but with a user-friendly interface and front-end that is similar to Venmo, Square or PayPal. Metal can act as a bridge to bitcoin or any cryptocurrency available. Many small businesses across the world prefer to only accept cash. However, in an increasingly cashless society, refusing to accept digital and card payments can be problematic. Put simply, Metal believes cash only businesses can benefit by adopting cryptocurrency as a new form of cash, as cryptocurrencies possess many of the same properties particularly around privacy, censorship resistance and fungibility. In order to bring digital payments into a world that utilizes blockchain-based technology over some traditional banking rails, Metal expects to save consumers 4-5% on all purchases.