Bitcoin: Difference between revisions
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[[Bitcoin]] (abbreviation: [[Bitcoin|BTC]]; sign: [[Bitcoin sign|₿]]) is a [[Digital currency|digital form of money]] without any physical existence. Unlike [[Currency|traditional currencies]], it operates without central control or [[Bank|banks]]. Transactions occur over a [[Peer-to-peer|decentralized network]] of thousands of interconnected computers, known as [[Node (networking)|nodes]]. | [[Bitcoin]] (abbreviation: [[Bitcoin|BTC]]; sign: [[Bitcoin sign|₿]]) is a [[Digital currency|digital form of money]] without any physical existence. Unlike [[Currency|traditional currencies]], it operates without central control or [[Bank|banks]]. Transactions occur over a [[Peer-to-peer|decentralized network]] of thousands of interconnected computers, known as [[Node (networking)|nodes]]. | ||
Based on early concepts of [[Digital cash|digital money]], the origins of [[Cryptocurrency|cryptocurrency]] trace back to 1983, when [[David Chaum]] introduced [[Ecash|eCash]] and launched [[DigiCash|Digicash]] in 1989. | Based on early concepts of [[Digital cash|digital money]], the origins of [[Cryptocurrency|cryptocurrency]] trace back to 1983, when [[David Chaum]] introduced [[Ecash|eCash]] and launched [[DigiCash|Digicash]] in 1989. | ||
In 2008, [[Satoshi Nakamoto]] published ''[https://bitcoin.org/bitcoin.pdf Bitcoin: A Peer-to-Peer Electronic Cash System]'' , introducing [[Blockchain|blockchain technology]] and [[Decentralization|decentralization]]. [[Bitcoin]]’s network launched in 2009 with the mining of the [[Genesis block|Genesis Block]]. | In 2008, [[Satoshi Nakamoto]] published ''[https://bitcoin.org/bitcoin.pdf Bitcoin: A Peer-to-Peer Electronic Cash System]'' , introducing [[Blockchain|blockchain technology]] and [[Decentralization|decentralization]]. [[Bitcoin]]’s network launched in 2009 with the mining of the [[Genesis block|Genesis Block]]. | ||
Key milestones were achieved: the [[Bitcoin Pizza Day|first real transaction]] on May 22, 2010; surpassing $1 in 2011; and widespread recognition by 2013. From 2021 to 2025, [[Bitcoin]] achieved global legitimacy through [[U.S. Securities and Exchange Commission|SEC]] approvals of [[Exchange-traded fund|ETFs]], [[PayPal]] integration, and U.S. regulatory frameworks under President [[Donald Trump]]. | Key milestones were achieved: the [[Bitcoin Pizza Day|first real transaction]] on May 22, 2010; surpassing $1 in 2011; and widespread recognition by 2013. From 2021 to 2025, [[Bitcoin]] achieved global legitimacy through [[U.S. Securities and Exchange Commission|SEC]] approvals of [[Exchange-traded fund|ETFs]], [[PayPal]] integration, and U.S. regulatory frameworks under President [[Donald Trump]]. | ||
[[Bitcoin]] transactions occur on a decentralized [[Blockchain|blockchain]] network where users transfer digital currency between [[Cryptocurrency wallet|wallets]]. Verified by [[Bitcoin mining|miners]] using [[Cryptography|cryptography]] and [[Proof-of-work|proof-of-work]], each transaction ensures transparency, security, and independence, allowing [[Peer-to-peer|peer-to-peer]] payments without [[Bank|banks]] or [[Financial intermediary|intermediaries]]. | [[Bitcoin]] transactions occur on a decentralized [[Blockchain|blockchain]] network where users transfer digital currency between [[Cryptocurrency wallet|wallets]]. Verified by [[Bitcoin mining|miners]] using [[Cryptography|cryptography]] and [[Proof-of-work|proof-of-work]], each transaction ensures transparency, security, and independence, allowing [[Peer-to-peer|peer-to-peer]] payments without [[Bank|banks]] or [[Financial intermediary|intermediaries]]. | ||
Revision as of 10:29, 18 November 2025
| Bitcoin | |
|---|---|
| |
| Commonly used logo of bitcoin | |
| Denominations | |
| Plural | Bitcoins |
| Symbol | ₿ (Unicode: U+20BF ₿ BITCOIN SIGN) |
| Code | BTC |
| Precision | 10⁻⁸ |
| Subunits |
59 Markets.com, “Crypto market analysis: What are the features of cryptocurrency?” Archived. Retrieved October 2025 |
| Development | |
| Original author | Satoshi Nakamoto |
| White paper | Bitcoin: A Peer-to-Peer Electronic Cash System |
| Implementation | Bitcoin Core |
| Initial release | 0.1.0 / 9 January 2009 (16 years ago) |
| Latest release | 30.0.0 / 11 October 2025 (34 days ago) |
| Code repository | GitHub |
| Development status | Active |
| Written in | C++ |
| Source model | Free and Open Source Software |
| License | MIT Licence |
| Ledger | |
| Ledger start | 3 January 2009 (16 years ago) |
| Timestamping scheme | Proof of work (partial hash inversion) |
| Hash function | SHA-256 (two rounds) |
| Issuance | Decentralized (block reward), Initially ₿50 per block, halved every 210,000 blocks |
| Block reward | ₿3.125 (as of 2025) |
| Block time | 10 minutes |
| Circulating supply | ₿19,934,271 (as of 14 October 2025) |
| Supply limit | ₿21,000,000 |
| Valuation | |
| Exchange rate | Floating |
| Website | bitcoin.org |
Bitcoin (abbreviation: BTC; sign: ₿) is a digital form of money without any physical existence. Unlike traditional currencies, it operates without central control or banks. Transactions occur over a decentralized network of thousands of interconnected computers, known as nodes.
Based on early concepts of digital money, the origins of cryptocurrency trace back to 1983, when David Chaum introduced eCash and launched Digicash in 1989.
In 2008, Satoshi Nakamoto published Bitcoin: A Peer-to-Peer Electronic Cash System , introducing blockchain technology and decentralization. Bitcoin’s network launched in 2009 with the mining of the Genesis Block.
Key milestones were achieved: the first real transaction on May 22, 2010; surpassing $1 in 2011; and widespread recognition by 2013. From 2021 to 2025, Bitcoin achieved global legitimacy through SEC approvals of ETFs, PayPal integration, and U.S. regulatory frameworks under President Donald Trump.
Bitcoin transactions occur on a decentralized blockchain network where users transfer digital currency between wallets. Verified by miners using cryptography and proof-of-work, each transaction ensures transparency, security, and independence, allowing peer-to-peer payments without banks or intermediaries.