Japanese cryptocurrency exchange Zaif suspended deposits and withdrawals for all supported digital assets on November 5, 2026, after an external provider began preventive maintenance on systems used to verify the safety of cryptocurrency transfers.
The exchange-wide restriction took effect at 13:19 Japan Standard Time (04:19 UTC), with no estimated restoration time. Zaif Payment was also suspended, while cryptocurrency trading, staking, recurring investment services and Japanese-yen deposits and withdrawals remained available.
Zaif said the suspension was precautionary and confirmed that its systems had not suffered unauthorized access or an outflow of funds. The exchange also assured customers that their assets remained securely stored.
All cryptocurrency transfers suspended
The November 5 maintenance covers every cryptocurrency supported by Zaif, rather than a particular blockchain or token. Customers cannot initiate normal crypto deposits or withdrawals through the exchange until the external maintenance is completed.
Zaif warned that cryptocurrency withdrawal requests submitted before the suspension would be canceled if processing had not been completed. Affected customers will need to submit new withdrawal instructions once the service resumes.
For a withdrawal that was already waiting, the pause comes with an extra step too. Customers cannot simply assume their pending transfers will be processed automatically when the maintenance finishes.
Incoming cryptocurrency transfers face a different restriction. Assets sent to Zaif during maintenance will not be reflected in customer accounts until the service is restored. Blockchain transaction fees charged by the sending network will still apply.
The buying and selling part of Zaif is still there, even as coins cannot go in or out. Customers can continue trading assets already held on the platform, but cannot replenish their accounts through cryptocurrency transfers or move digital assets to external wallets during the suspension.
External provider maintenance affects the entire exchange
Zaif attributed the interruption to preventive maintenance being conducted by an external provider whose systems support cryptocurrency-transfer safety verification.
The third party, whoever it is, sits at a point Zaif says it uses to check transfers. The exchange did not identify the provider, explain the technical work involved or disclose whether any alternative verification arrangements were available.
Zaif has experienced narrower transfer restrictions in recent months. In October, it announced a Bitcoin deposit and withdrawal suspension associated with a planned blockchain hard fork, scheduling maintenance from October 29 through November 4.
That earlier restriction concerned BTC specifically, with other cryptocurrency transfers remaining available. The November 5 interruption instead affects the exchange’s entire supported cryptocurrency portfolio, irrespective of the individual blockchain networks involved.
Other exchanges have reported transfer disruptions with more limited scope. Kraken, for example, experienced approximately 30 hours of FLOW deposit and withdrawal problems between October 29 and October 31, while reporting that other cryptocurrency funding methods remained operational.
Coinbase also reported delayed HBAR sends and receives in August, with cryptocurrency trading and fiat transactions unaffected.
Those incidents involved individual blockchain gateways. Zaif’s November 5 suspension is broader in asset coverage, although the exchange has not disclosed how many customer transactions were affected or the total value of pending transfers.
It is a bigger interruption by asset count, though no transaction count was released. The available information does not establish whether maintenance has caused an actual processing failure or whether Zaif temporarily disabled transfers solely as a preventive measure.
Security assurances and Japan’s regulatory requirements
Zaif explicitly stated that the maintenance was not a response to unauthorized access or missing customer assets within its systems. Its announcement described the suspension as a precaution associated with an external service provider.
The clarification comes as Japanese cryptocurrency exchanges continue managing operational restrictions tied to security checks and third-party infrastructure.
Earlier this week, Binance Japan maintained withdrawal restrictions on dozens of cryptocurrencies following the security incident affecting Binance Global. Although several major assets had regained withdrawal functionality, more than 40 tokens remained restricted as of November 2.
The circumstances differ from Zaif’s latest interruption. Binance Japan linked its restrictions to precautionary checks following a specific security incident, whereas Zaif has attributed its November 5 action to maintenance of an external transfer-verification system.
Japan’s Financial Services Agency requires registered cryptocurrency exchanges to establish system-risk management frameworks and maintain customer money and digital assets separately from their own holdings. The regulator’s official guidance on cryptocurrency exchange requirements also details obligations concerning customer protection and transaction verification.
Zaif has not indicated that its latest suspension was required by a regulator or associated with an enforcement action. Its stated reason remains preventive maintenance by an external technology provider.
The exchange has not provided an estimated restoration time, the identity of the provider or a detialed explanation of the maintenance. It has also not disclosed whether the interruption affects all customers equally in terms of pending transaction volumes.
Customers with incomplete withdrawals will need to submit new requests after restoration, while incoming cryptocurrency deposits sent during the suspension will remain pending for account crediting.
A reopening date, for now, is simply not in the notice. Zaif said cryptocurrency deposits, withdrawals and Zaif Payment will resume after the external maintenance is completed, but did not specify when that would occur.
Johan Shamshad is a financial markets writer at Dave Finances covering cryptocurrencies, trading platforms, brokers, fintech, financial regulation, and developments across global markets. He previously worked at Gulf News, adding newsroom experience to his coverage of fast-moving financial and digital-asset markets.
His work focuses on identifying market-moving events, company developments, regulatory changes, product launches, and shifts in trading and financial infrastructure.
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