Bitcoin is a cryptocurrency and worldwide payment system.It is commonly referred to with terms like digital currency, digital cash, virtual currency, electronic currency, or cryptocurrency. It is the first decentralized digital currency which the system works without a central repository or single administrator.A transaction is a transfer of value between Bitcoin wallets that gets included in the block chain.Bitcoin wallets keep a secret piece of data called a private key or seed, which is used to sign transactions, providing a mathematical proof that they have come from the owner of the wallet.
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