Bitcoin (BTC) investors should see this! Launching Ethereum 2.0 | ETH and BTC Price Prediction.

The bitcoin blockchain is a public ledger that records bitcoin transactions.[27] It is implemented as a chain of blocks, each block containing a hash of the previous block up to the genesis block[c] in the chain. A network of communicating nodes running bitcoin software maintains the blockchain.[28]: 215–219  Transactions of the form payer X sends Y bitcoins to payee Z are broadcast to this network using readily available software applications.

Network nodes can validate transactions, add them to their copy of the ledger, and then broadcast these ledger additions to other nodes. To achieve independent verification of the chain of ownership each network node stores its own copy of the blockchain.[29] At varying intervals of time averaging to every 10 minutes, a new group of accepted transactions, called a block, is created, added to the blockchain, and quickly published to all nodes, without requiring central oversight. This allows bitcoin software to determine when a particular bitcoin was spent, which is needed to prevent double-spending. A conventional ledger records the transfers of actual bills or promissory notes that exist apart from it, but the blockchain is the only place that bitcoins can be said to exist in the form of unspent outputs of transactions.[6]: ch. 5 

Individual blocks, public addresses and transactions within blocks can be examined using a blockchain explorer.[citation needed]

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