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Retrieved "What Is Bitcoin?". 99 In March 2015 21 Inc announced it had raised 116 million USD in venture funding, the largest amount for any digital currency-related companies.

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See also: Bitcoin scalability problem and List of bitcoin forks A fork referring to a blockchain is defined variously as a blockchain split into two paths forward, or as a change of protocol rules. Adam Back developed hashcash, a proof-of-work scheme for spam control. "Activating and Using Bitcoin as a Payment Option". 109 Uber switched to bitcoin in Argentina after the government blocked credit card companies from dealing with Uber. Retrieved 9 November 2013.

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"Bitcoin: How a Virtual Currency Became Real with.6M Fraud". Retrieved on "Bitcoin Currency, Hackers Make Money, Investing in Bitcoins, Scams  aarp". 7 In the bit gold proposal which proposed a collectible market based mechanism for inflation control, Nick Szabo also investigated some additional enabling aspects including a Byzantine fault-tolerant asset registry to store and transfer the chained proof-of-work solutions. 112 In November 2016, the Swiss Railway operator SBB (CFF) upgraded all their automated ticket machines so that bitcoin could be bought from them using the scanner on the ticket machine to scan the bitcoin address on a phone app.

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Gox auditor's compromised computer illegally to transfer a large number of bitcoins to himself. Gox's Dwolla Account, Accuse It Of Violating Money Transfer Regulations".

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56 This marked the first time a government agency claimed to have seized bitcoin. Retrieved 26 December 2013. "Bitcoin hash rate exceeds 1 EH/s for the first time".