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Bitcoin - price, chart, price history, converter

bitcoinBitcoin
BTC
$ 22,554.00
1.00000000 BTC
Marketcap
$ 435,422,881,649
Volume (24h)
$ 37,924,493,131
Circulating Supply
19,285,462 BTC
Total Supply
21,000,000 BTC

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What is Bitcoin?

Bitcoin is the first decentralized cryptocoin ever built on top of a blockchain. It was created by an anonymous person or group of people with the nickname Satoshi Nakamoto in 2009 as an open source project.

To understand the Bitcoin blockchain we can imagine a book, where each page number contains a signature that can validate the content of that page and the previous one. This signature is calculated by an algorithm known as SHA-256 and cannot be reversed. In other words, we can calculate the A-256 signature of some content, but we cannot get content if we know its SHA-256 signature. Back to the book example: if we take a page out of the book, we can easily understand that a page is missing. It's the same with adding a non-existent page. All pages are copied between chain members and that is why the Bitcoin Blockchain is considered a distributed network.

Bitcoin is an open source project maintained by a team of developers with over 580 active contributors. The chain code is available on Github. Bitcoin's primary purpose was decentralized yet reliable, low-fee transactions between people and businesses around the world. Currently, more than 100,000 providers accept Bitcoin for payments. And there are between 2.9 and 5.8 million unique users who are actively using Bitcoin cryptocurrency wallets. The price of Bitcoin can be very volatile due to speculation and has in the past changed by more than +/- 20% during a single.


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