Fnalysis.
Impossible Fee
In November 2025, someone mixed up the fee field with the amount field and paid 0.99 BTC (about $105,000) to move just $10 to an exchange. The miner who processed the block still hasn't decided whether to give it back.
The case highlights a real risk of bitcoin transactions: unlike a bank transfer, once confirmed on the blockchain it's essentially irreversible, and getting the excess back depends entirely on the goodwill of the miner who processed the block. Similar mistakes have happened before, and they haven't always ended well for the person who made them.
Source: Bitcoin.com →The most expensive "Enter" key press in history.