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6 August 2010 β Major Bitcoin protocol vulnerability and emergency fork
A day in Bitcoin history: 6 Aug 2010 (BTC price: ββ―$0.08; hashrate: negligible)
A critical flaw allowed a single transaction to generate over 92 billion BTC. The community quickly responded: miners implemented an emergency protocol fork, invalidating the fake transaction and securing the network. It remains the only severe security flaw ever exploited.
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History of bitcoin - Wikipedia
