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Bitcoin ( abbreviation: BTC [a]; sign: ₿) 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.
- BTC, XBT
- 10−8
- Bitcoins
- ₿, (Unicode: .mw-parser-output .monospaced{font-family:monospace,monospace}U+20BF ₿ BITCOIN SIGN)
A cryptocurrency, crypto-currency, or crypto [a] is a digital currency designed to work as a medium of exchange through a computer network that is not reliant on any central authority, such as a government or bank, to uphold or maintain it. [2]
- Transactions
- Security
- Payment Verification
- Data in The Blockchain
- Alleged Criminal Activity
- See Also
A bitcoin is defined by a sequence of digitally signed transactions that began with the bitcoin's creation, as a block reward. The owner of a bitcoin transfers it by digitally signing it over to the next owner using a bitcoin transaction, much like endorsing a traditional bank check. A payee can examine each previous transaction to verify the chain...
Various potential attacks on the bitcoin network and its use as a payment system, real or theoretical, have been considered. The bitcoin protocol includes several features that protect it against some of those attacks, such as unauthorized spending, double spending, forging bitcoins, and tampering with the blockchain. Other attacks, such as theft o...
Each miner can choose which transactions are included in or exempted from a block.A greater number of transactions in a block does not equate to greater computational power required to solve that block. Upon receiving a new transaction a node must validate it: in particular, verify that none of the transaction's inputs have been previously spent. T...
While it is possible to store any digital file in the blockchain, the larger the transaction size, the larger any associated fees become. Various items have been embedded, including URLs to child pornography, an ASCII art image of Ben Bernanke, material from the Wikileaks cables, prayers from bitcoin miners, and the original bitcoin whitepaper.
The use of bitcoin by criminals has attracted the attention of financial regulators, legislative bodies, law enforcement, and the media. The FBI prepared an intelligence assessment, the SEC has issued a pointed warning about investment schemes using virtual currencies,and the U.S. Senate held a hearing on virtual currencies in November 2013. Severa...
BitClout is an open source blockchain -based social media platform. On the platform, users can post short-form writings and photos, award money to posts they particularly like by clicking a diamond icon, [2] as well as buy and sell "creator coins" (personalized tokens whose value depends on people's reputations).
- March 2021; 2 years ago
- Open source
- 18 January 2021; 2 years ago
- MIT license
Bitcoin Magazine is one of the original news and print magazine publishers covering Bitcoin and digital currencies. Bitcoin Magazine began publishing in 2012. It was co-founded by Vitalik Buterin, Mihai Alisie, Matthew N. Wright, Vladimir Marchenko, and Vicente S. [1] [2] It is currently owned and operated by BTC Inc in Nashville, Tennessee.
- Digital Currency
- BTC Media LLC
- May 2012
A non-fungible token ( NFT) is a unique digital identifier that is recorded on a blockchain and is used to certify ownership and authenticity. It cannot be copied, substituted, or subdivided. [1] . The ownership of an NFT is recorded in the blockchain and can be transferred by the owner, allowing NFTs to be sold and traded.
From Wikipedia, the free encyclopedia. For other uses, see Block chain (disambiguation). A blockchain is a distributed ledger with growing lists of records ( blocks) that are securely linked together via cryptographic hashes.