Bithumb payout error credits 620,000 BTC and triggers 17% intraday Bitcoin crash on Feb. 6

On Feb. 6, Bithumb mistakenly credited about 695 users with at least 2,000 BTC each instead of a planned 2,000 won cash reward, creating roughly 620,000 BTC in internal ledger balances and causing a brief 17% Bitcoin price drop on the exchange. Trading and withdrawals for affected accounts were halted within 35 minutes, and most of the misallocated BTC was later recovered, highlighting operational control risks and prompting South Korean regulators to push for stricter oversight.