According to MinerMag, the Bitcoin mining pool giant Foundry USA Pool has returned an erroneously paid transaction fee of 8.18 BTC (approximately $777,000). This fee was mistakenly paid by a user on December 19, exceeding the normal fee by 91,127 times. Foundry stated that after careful consideration, they decided to refund the fee to the user and emphasized that similar cases will be handled on a case-by-case basis in the future.