There was something unusual about Bitcoin block 74638. It was Core developer Jeff Garzik who first spotted it, commenting on the “quite strange” transaction outputs, which stood at 92233720368.54 BTC apiece. That wasn’t meant to happen. Within an hour, another forum user had started a thread titled “overflow bug serious” in which he implored “We need a fix asap.” It was Aug. 15, 2010, and Bitcoin had just encountered its biggest bug yet.

Also read: Bitcoin History Part 9: Mt. Gox Is Born

Bitcoin Encounters a Very Big Bug

Bitcoin had already endured at least four major bugs or vulnerabilities prior to the integer overflow bug that led to 184 billion BTC being created out of thin air. The Bitcoin wiki lists 40 bugs of varying degrees of severity, with the most recent discovered in February 2019….

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Source: https://news.bitcoin.com/bitcoin-history-part-10-the-184-billion-btc-bug/