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To stop double spending, all transactions must be recorded and validated each time in a central server where all of the balance data are stored. However, in a decentralized community, every node on the community has to do the job of a server; it has to maintain listing of transactions and steadiness data. For digital cash system, a cost community necessarily should have valid accounts, balances and transaction records. Thus, it's obligatory for all nodes/entities in the network to keep a consensus about all these records. The transaction is secured and made reliable by running it on a peer-to-peer network that is akin to a file-sharing system. Currency conversion price - an FX