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Bitcoin was designed by its inventor, Satoshi Nakamoto, to work as a currency. [3] [4] It is commonly referred to with terms like: digital currency, [5]: 1 digital cash, [6] virtual currency, [7] electronic currency, [8] digital gold, [9] or cryptocurrency. [1] [a] The question whether bitcoin is a currency or not is disputed. [1]
Bitcoin (abbreviation: BTC; sign: ₿) is the first decentralized cryptocurrency.Based on a free-market ideology, bitcoin was invented in 2008 by Satoshi Nakamoto, an unknown entity (person or persons). [5]
Nick denied being Satoshi, and stated his official opinion on Satoshi and bitcoin in a May 2011 article. [40] In a March 2014 article in Newsweek, journalist Leah McGrath Goodman doxed Dorian S. Nakamoto of Temple City, California, saying that Satoshi Nakamoto is the man's birth name. Her methods and conclusion drew widespread criticism. [41] [42]
In January 2009, bitcoin was created by pseudonymous developer Satoshi Nakamoto. It used SHA-256, a cryptographic hash function, in its proof-of-work scheme. [17] [18] In April 2011, Namecoin was created as an attempt at forming a decentralized DNS. In October 2011, Litecoin was released, which used scrypt as its hash function instead of SHA-256.
The XRP Ledger operates on a consensus protocol that differs from traditional proof-of-work (PoW) and proof-of-stake (PoS) mechanisms. [8] [3] Transactions are validated by a network of independent validators who reach consensus every 3 to 5 seconds, enabling rapid transaction settlement. [8]
Satoshi Nakamoto message embedded in the coinbase of the first block. Nakamoto said that the work of writing bitcoin's code began in the second quarter of 2007. [9] On 18 August 2008, he or a colleague registered the domain name bitcoin.org, [10] and created a web site at that address.
The legal status of cryptocurrencies varies substantially from one jurisdiction to another, and is still undefined or changing in many of them. [1] Whereas, in the majority of countries the usage of cryptocurrency isn't in itself illegal, its status and usability as a means of payment (or a commodity) varies, with differing regulatory implications.
Litecoin (Abbreviation: LTC; sign: Ł) is a decentralized peer-to-peer cryptocurrency and open-source software project released under the MIT/X11 license.Inspired by Bitcoin, Litecoin was among the earliest altcoins, starting in October 2011.