Bitcoin is a cryptocurrency, a digital asset designed to work as a medium of exchange that uses cryptography to control its creation and management, rather than relying on central authorities. It was invented and implemented by the presumed pseudonymous Satoshi Nakamoto, who integrated many existing ideas from the cypherpunk community. Over the course of bitcoin's history, it has undergone. 29 rows · This is a list of Wikipedia articles about for-profit companies with notable commercial . In February the world's largest bitcoin exchange, Mt. Gox, declared bankruptcy. The company stated that it had lost nearly $ million of their customers' bitcoins likely due to theft. This was equivalent to approximately , bitcoins, or about 7% of all the bitcoins in existence. The price of a bitcoin fell from a high of about.
Bitcoin trading wikipediaCryptocurrency exchange - Wikipedia
Retrieved 18 August International Business Times. Retrieved 2 November Jeffries, Adrienne 1 May The Verge. Browne, Ryan 20 December Jeffries, Adrienne 9 April Shen, Lucinda 8 August Fortune Magazine.
Retrieved 20 June Ambler, Pamela 9 August Graham, Luke 31 July Jeffries, Adrianne 12 April Retrieved 7 April Evans, John 10 August Retrieved 12 August Kharpal, Arjun 3 August Retrieved 2 August Ou, Elaine 10 December Retrieved 14 April The New York Times. Retrieved 28 July Bloomberg Businessweek. Retrieved 19 December FT Alphaville. The Economist. Retrieved 22 June CNN Tech.
Cable News Network. Retrieved 2 April South China Morning Post. Retrieved 3 August Retrieved 18 November The Telegraph. Retrieved 7 June MIT Technology Review. Retrieved 22 January Retrieved 13 October Business Insider.
Retrieved 4 May Gox QuadrigaCX. Bitcoin scalability problem History of bitcoin cryptocurrency crash Bitcoin bomb threats Twitter bitcoin scam. Category Commons. Companies portal. Categories : Bitcoin companies Lists of companies by industry. Hidden categories: Articles needing additional references from October All articles needing additional references Articles with short description Short description is different from Wikidata Wikipedia extended-confirmed-protected pages All articles with lists with data missing Data missing from October All articles with unsourced statements Articles with unsourced statements from October Namespaces Article Talk.
Views Read View source View history. Help Learn to edit Community portal Recent changes Upload file. Download as PDF Printable version. Hong Kong. Treasury extended its anti-money laundering regulations to processors of bitcoin transactions.
In June , Bitcoin Foundation board member Jon Matonis wrote in Forbes that he received a warning letter from the California Department of Financial Institutions accusing the foundation of unlicensed money transmission. Matonis denied that the foundation is engaged in money transmission and said he viewed the case as "an opportunity to educate state regulators.
In late July , the industry group Committee for the Establishment of the Digital Asset Transfer Authority began to form to set best practices and standards, to work with regulators and policymakers to adapt existing currency requirements to digital currency technology and business models and develop risk management standards.
Securities and Exchange Commission filed an administrative action against Erik T. Voorhees, for violating Securities Act Section 5 for publicly offering unregistered interests in two bitcoin websites in exchange for bitcoins. There are also faucets that dispense alternative cryptocurrencies. The first bitcoin faucet was called "The Bitcoin Faucet" and was developed by Gavin Andresen in Faucets usually give fractions of a bitcoin, but the amount will typically fluctuate according to the value of bitcoin.
Some faucets also have random larger rewards. To reduce mining fees , faucets normally save up these small individual payments in their own ledgers , which then add up to make a larger payment that is sent to a user's bitcoin address.
Because bitcoin transactions are irreversible and there are many faucets, they have become targets for hackers interested in stealing bitcoins. Advertisements are the main income source of bitcoin faucets. Faucets try to get traffic from users by offering free bitcoin as an incentive. Some ad networks also pay directly in bitcoin.
This means that faucets often have a low profit margin. Some faucets also make money by mining altcoin in the background, using the user's CPU.
Bitcoins can be stored in a bitcoin cryptocurrency wallet. Theft of bitcoin has been documented on numerous occasions. At other times, bitcoin exchanges have shut down, taking their clients' bitcoins with them. A Wired study published April showed that 45 percent of bitcoin exchanges end up closing. On 19 June , a security breach of the Mt. Gox bitcoin exchange caused the nominal price of a bitcoin to fraudulently drop to one cent on the Mt. Gox exchange, after a hacker used credentials from a Mt.
Gox auditor's compromised computer illegally to transfer a large number of bitcoins to himself. They used the exchange's software to sell them all nominally, creating a massive "ask" order at any price. Within minutes, the price reverted to its correct user-traded value. In July , the operator of Bitomat, the third-largest bitcoin exchange, announced that he had lost access to his wallet. He announced that he would sell the service for the missing amount, aiming to use funds from the sale to refund his customers.
Bitcoinica was hacked twice in , which led to allegations that the venue neglected the safety of customers' money and cheated them out of withdrawal requests. Securities and Exchange Commission had reportedly started an investigation on the case. As a result, Bitfloor suspended operations. As a result, Instawallet suspended operations. On 11 August , the Bitcoin Foundation announced that a bug in a pseudorandom number generator within the Android operating system had been exploited to steal from wallets generated by Android apps; fixes were provided 13 August In October , Inputs.
The service was run by the operator TradeFortress. Coinchat, the associated bitcoin chat room, was taken over by a new admin. The CEO was eventually arrested and charged with embezzlement. On 3 March , Flexcoin announced it was closing its doors because of a hack attack that took place the day before.
In December , hackers stole 4, bitcoins from NiceHash a platform that allowed users to sell hashing power. On 19 December , Yapian, a company that owns the Youbit cryptocurrency exchange in South Korea, filed for bankruptcy following a hack, the second in eight months. In , the Cryptocurrency Legal Advocacy Group CLAG stressed the importance for taxpayers to determine whether taxes are due on a bitcoin-related transaction based on whether one has experienced a " realization event": when a taxpayer has provided a service in exchange for bitcoins, a realization event has probably occurred and any gain or loss would likely be calculated using fair market values for the service provided.
In August , the German Finance Ministry characterized bitcoin as a unit of account ,   usable in multilateral clearing circles and subject to capital gains tax if held less than one year. On 5 December , the People's Bank of China announced in a press release regarding bitcoin regulation that whilst individuals in China are permitted to freely trade and exchange bitcoins as a commodity, it is prohibited for Chinese financial banks to operate using bitcoins or for bitcoins to be used as legal tender currency, and that entities dealing with bitcoins must track and report suspicious activity to prevent money laundering.
Bitcoin's blockchain can be loaded with arbitrary data. In researchers from RWTH Aachen University and Goethe University identified 1, files added to the blockchain, 59 of which included links to unlawful images of child exploitation, politically sensitive content, or privacy violations.
Interpol also sent out an alert in saying that "the design of the blockchain means there is the possibility of malware being injected and permanently hosted with no methods currently available to wipe this data". From Wikipedia, the free encyclopedia.
Redirected from History of Bitcoin. History of the Cryptocurrency. Main article: Satoshi Nakamoto. See also: Bitcoin scalability problem and List of bitcoin forks. See also: Legality of bitcoin by country or territory. Mercatus Center. George Mason University. Retrieved 22 October Accessed 8 January Advances in Cryptology Proceedings of Crypto. Lecture Notes in Computer Science.
Retrieved 17 September Princeton and Oxford: Princeton University Press. Archived from the original on 4 October Retrieved 5 December Archived from the original on 22 September Retrieved 24 June Archived from the original on 22 December Business Insider.
Archived from the original on 15 June Retrieved 15 June Retrieved 20 December Retrieved 9 November Archived from the original on 31 October Retrieved 13 October Archived from the original on 13 December Retrieved 2 November Retrieved 26 March Archived from the original on 15 October The New Yorker. Archived from the original on 23 August Retrieved 16 February The Times. Retrieved 27 April Bitcoin: And the Future of Money. Triumph Books. Archived from the original on 21 January Retrieved 20 January Archived from the original on 26 March Archived from the original on 16 March Here's how he describes it".
The Washington Post. Retrieved 2 September The FBI". Retrieved 7 October The Huffington Post. Retrieved 21 October Archived from the original on 9 April National Vulnerability Database. Retrieved 22 March Retrieved 15 October Retrieved 4 October Archived from the original on 13 April Archived from the original on 3 November Retrieved 19 May Archived from the original on 6 October The Atlantic.
Archived from the original on 1 November Archived from the original on 14 April New York Times. Archived from the original on 5 December Retrieved 27 November Business Week. Retrieved 17 December Archived from the original on 29 April Archived from the original on 7 March Retrieved 6 March Retrieved 3 April Retrieved 3 March — via London Review of Books.
The Wall Street Journal. Retrieved 28 June Electronic Frontier Foundation. Retrieved 7 December Archived from the original on 27 June Retrieved 22 June Archived from the original on 12 January Retrieved 20 May American Banker.
Archived from the original on 12 April Retrieved 24 April Parity News. Archived from the original on 3 June Retrieved 28 February Retrieved 15 February Ars Technica.
Archived from the original on 22 April Retrieved 14 June Gox suspends deposits". The Verge. Retrieved 21 March Archived from the original on 9 May Archived from the original on 21 October Bitcoin miners must also register if they trade in their earnings for dollars. Archived from the original PDF on 28 March