A Bitcoin user accidentally paid 1.6 BTC entirely as miner fees, losing $102,000 According to mempool data, someone mistakenly paid 1.6 BTC (approximately $102,000) as transaction fees in block 962,142. The transaction was confirmed on August 12 at 20:16:49, with an input of 1.60343885 BTC. However, all outputs were 0 BTC (including an OP_RETURN data output and a change output), causing the entire input to be treated as miner fees. The transaction fee rate was 1.72 million satoshis/byte, with an effective fee rate of 117,062 satoshis/byte (39,021 times the normal rate). The transaction was packaged by the SpiderPool mining pool. This is a classic case of user error—failing to properly set a change address when constructing an OP_RETURN transaction, resulting in all input funds being paid as fees to miners.