bitFlyer Limits Bitcoin (BTC) Withdrawals 48 Hours After Yen Deposits From October 15

bitFlyer's 48-Hour Cooldown Rule

Japanese crypto exchange bitFlyer will impose a 48-hour “cooldown” on sending crypto to external addresses after a Japanese yen deposit, with the rule taking effect on Thursday, October 15, the exchange announced on Friday, October 2. The company's notice frames the measure as a defense against fraud and unauthorized fund movement, and it applies only to individual users whose identity verification (KYC) was completed fewer than 90 days before the deposit. Established accounts are exempt. The restriction covers every asset listed on the platform, Bitcoin (BTC) among them; because it touches transfers only, the Bitcoin price, balances and market activity sit outside its scope.

The mechanics are precise. Each yen deposit starts its own 48-hour window. During that window, crypto equal to the part of the deposit above 100,000 yen cannot leave the account for external addresses; deposits totaling 100,000 yen or less fall outside the restriction altogether, and deposit fees do not count toward the total. Users funding in several installments run one clock per deposit, with each restriction lifting sequentially as its window expires. Quick deposits follow a different path: they already carry a separate seven-day transfer limit and are excluded from the cooldown.

Day-to-day use is unaffected throughout. Yen deposits and withdrawals, buying and selling, holding and receiving crypto all continue, spot trading runs as normal, and users need no application to benefit from the rule. The exchange says its crypto send screen will display both the cooldown status and the current sendable quantity, affected yen entries in the deposit history will be marked “in cooldown”, and the yen deposit detail page will show the exact date and time each restriction lifts. Since sendable amounts can vary with a user's asset situation, bitFlyer tells users to confirm the latest figure on the send screen itself.

Regulator Pressure Behind the Policy

The policy lands amid a regulator-driven tightening across Japan's exchange sector. On Thursday, August 6, the Financial Services Agency and the National Police Agency jointly asked the Japan Cryptoasset Business Association (JVCEA) to strengthen anti-fraud defenses across 11 points, including pre-registration of withdrawal destinations and temporary outflow limits after a fiat deposit or a crypto purchase. The agencies wrote that exchange operators should curb external transfers immediately after deposits and purchases, and bitFlyer's cooldown is a direct answer to that request.

The exchange pairs the new limit with its standing fraud warnings. bitFlyer states plainly that it never asks users to send crypto, and it cautions that requests arriving through social media, dating apps or investment groups are scams, schemes that typically push victims to move coins to a cold wallet the criminals control. Peer venues are moving in parallel. Coincheck, per its corporate announcement, has since Tuesday, September 15 applied a waiting period before transfers to newly registered destination addresses, while addresses registered earlier remain outside the measure. Japan's JVCEA members thus converge on the same principle from two directions: bitFlyer freezes the asset right after the yen lands, Coincheck delays trust in a new destination.

For users inside the 90-day verification window the practical effect is a delay, not a block. They can still sell into yen during the cooldown and withdraw fiat, which keeps the rule from trapping funds; the friction falls on the moment fraud losses actually occur, the transfer of freshly bought coins to an outside address.

Calibrated Friction, Not a Blanket Ban

COINOTAG's reading: the August 6 request set the direction, and bitFlyer's announcement is the most fully specified implementation yet of the deposit-to-transfer delay the agencies described. What stands out is calibration rather than a blanket ban: a 100,000 yen exemption, per-deposit clocks, a 90-day verification window and a fiat exit keep the friction on the newest, most fraud-exposed accounts. As JVCEA members work through the remaining items on the 11-point list, comparable cooldown rules at other Japanese exchanges look likely.