In 2010, a bug led to the accidental creation of 184 billion BTC, known as the value overflow incident. This happened at block height 74638. However, Satoshi or another developer fixed the error within 5 hours of its occurrence by releasing a patched Bitcoin client (version 0.3.10) which ignored the excess coins. As a majority of miners and nodes accepted this new client, the error was "forked out" and erased from the blockchain.