Japan exchange adds 48-hour fraud cooldown

TLDR

Japans largest crypto exchange bitFlyer is adding a 48-hour Cooldown on some outbound crypto transfers for newly verified users to reduce fraud risk.

1. BitFlyers Cooldown blocks part of newly deposited yen-linked crypto from leaving the exchange for 48 hours, starting October 15, 2026.
2. The rule targets scams that push new users to move large deposits out quickly, while leaving trading, holding and yen withdrawals untouched.
3. It fits a broader Japanese push for tighter exchange controls, and other local platforms already use similar withdrawal-friction tools.

Deep Dive

1. How The Cooldown Works

BitFlyer will introduce its Cooldown anti-fraud measure on October 15, 2026, restricting some outbound crypto transfers for individual users who completed identity verification less than 90 days earlier, according to a recent notice. The rule applies after each eligible yen deposit: for 48 hours, crypto equivalent to total yen deposited in the previous 48 hours, minus 100,000 yen, cannot be sent to external wallets or other exchanges. Deposits of 100,000 yen or less in that window are unaffected, and each deposit starts its own separate 48-hour timer.

Quick Deposit payments are excluded because they already carry a seven-day transfer restriction. Importantly, users can still trade, hold and receive crypto on bitFlyer, and yen deposits and withdrawals are not affected; only outbound crypto transfers face the temporary hold.

2. Why Japan Is Tightening Controls

BitFlyer explicitly frames Cooldown as a fraud-prevention measure, responding to rising impersonation scams where attackers convince victims to quickly deposit fiat and send crypto to external addresses. By temporarily locking newly funded amounts for newer accounts, the exchange makes it harder for scammers to drain funds in a single call or message.

This move follows an August request from Japans Financial Services Agency and National Police Agency for exchanges to add temporary withdrawal restrictions after large or unusual fiat deposits, stronger transaction monitoring and fast responses to suspicious activity. Authorities highlight patterns such as unusually large or frequent transfers and abrupt withdrawals to risk-flagged wallets.

3. What Users And Markets Should Watch

Binance Japan already uses questionnaires, risky-address warnings and variable transaction limits, and regulators have imposed sanctions on firms that mishandle compliance and security. BitFlyers Cooldown is another example of Japanese venues adding friction around withdrawals rather than changing core trading access.

Crypto users in Japan should watch for three things: whether other exchanges adopt similar 48-hour holds, whether scammers pivot to older accounts or overseas platforms, and how these rules affect liquidity flows between Japanese venues and global markets. The measure might slightly slow capital movement out of bitFlyer, but it is narrow enough that day-to-day trading depth should remain largely intact.

Confidence: high. Details come from recent exchange communications and independent news coverage.

Conclusion

BitFlyers 48-hour fraud Cooldown is a targeted restriction on new, large deposits that aims to block rapid scam-driven withdrawals without disrupting normal trading or yen access. It reflects Japans broader strategy of adding controlled friction at the withdrawal stage, and similar tools may spread across local exchanges. For crypto users, the main implication is operational: plan for short delays on fresh funds, and treat post-deposit withdrawal rules as part of the security landscape, not just an inconvenience.