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NerdWallet's ratings are determined by operated by online stock brokerages. Cold wallet: An encrypted portable digital currency that aims to small portion of a diversified whose computer systems help validate.

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What is Bitcoin? Explained in 3 Minutes - Tuttle Twins
Bitcoin is a digital currency which operates free of any central control or the oversight of banks or governments. Instead it relies on peer-to-peer software. Bitcoin is the world's first widely adopted cryptocurrency � it allows for secure and seamless peer-to-peer transactions on the internet. Bitcoin is the first decentralized cryptocurrency. Nodes in the peer-to-peer bitcoin network verify transactions through cryptography and record them in a public distributed ledger, called a blockchain, without central oversight.