On this day in Bitcoin history, August 15th A significant event occurred in the development of Bitcoin on August 15th, highlighting the early vulnerabilities of Bitcoin and the community's rapid response capabilities. The "Value Overflow Incident" in 2010. On this day, an unknown individual exploited an integer overflow vulnerability in the Bitcoin code, creating approximately 184.467 billion bitcoins in block 74638, far exceeding the total supply cap of 21 million. This vulnerability stemmed from an overflow when summing transaction output values that were too large, leading to verification failure. The incident was discovered by developer Jeff Garzik on the Bitcointalk forum, who exclaimed, "The output value of block 74638 is very strange!" The mysterious founder Satoshi Nakamoto released a fix within 5 hours, rolling back the blockchain through a soft fork to erase these illegal bitcoins. This is considered the only major security vulnerability exploited in Bitcoin's history, which, if not promptly fixed, could have ended Bitcoin.