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To stop double spending, all transactions have to be recorded and validated every time in a central server where all the balance data are saved. However, in a decentralized network, every node on the community has to do the job of a server; it has to take care of record of transactions and stability data. For digital cash system, a cost network necessarily should have valid accounts, balances and transaction information. Thus, it's compulsory for all nodes/entities in the community to maintain a consensus about all these records. The transaction is secured and made trustworthy by working it on a peer-to-peer network that's akin to a file-sharing system. Currency conversion payment - an FX