Security · 12h ago
Bitcoin's 2010 Overflow Bug Created 184 Billion BTC — Then Vanished
In August 2010, a transaction in Bitcoin block 74638 exploited an integer overflow bug to create 184 billion BTC, far exceeding the 21 million cap. The flaw, CVE-2010-5139, was patched within hours by Satoshi Nakamoto, and the bad chain was abandoned by the network. This incident reveals that Bitcoin's early security relied on rapid human intervention, not just code.
Meridian48 take
The story underscores that Bitcoin's decentralization was not absolute from day one; a single bug required a coordinated emergency response from its creator and core developers.
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Everyone Says Bitcoin Has Been Decentralized Since Block Zero. Block 74638 Says Otherwise. →
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