This solution allows you: 1) Merchant - invoicing and confirmation after payment. 2) Managing wallets for which payment is received via rest api, including the withdrawal of money to the cold wallet. 3) Creation of permanent (deposit) wallets for which payment is accepted with the possibility of confirmation. Depending on the needs of the service can be customized. Description of scenarios for your business: 1) A client (for example, an online store) registers with your service, setup his wallet and receives a token key. After that he places a button with this token on his website. After the purchase and payment of goods for this button comes a confirmation from the service that payment is received (billing statement). 2) The client needs to automatically withdraw funds to his cold wallet. The client writes the functionality in his system and can directly from his personal account, exchange and etc. withdraw funds to a cold wallet through the rest api service. 3) Solution for the exchanges, the client creates an account with a permanent deposit address on the exchange, then he can top up this wallet as many times as necessary, the exchange can check the flow of funds to the deposit by checking the history and transaction status by rest api. The funds are automatically transferred to the cold wallet of the exchange from deposit addresses.