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Possible suspension of Coincheck’s features due to Bitcoin fork happening on July 23, 2017

important notice

On July 23, 2017, the event of a fork of the Bitcoin protocol may happen. Initially, it was intended to happen on August 1st, but it may happen faster than anticipated.

This blog explains how we will cope with a potential Bitcoin fork happening on July 23, 2017. It has no relation to our policy regarding “Bitcoin Cash” hard fork that may be happening on same year August 1.

Please refer to the following blog for our policy regarding Bitcoin Cash.
Coincheck’s policy about Bitcoin Cash and temporary suspension of some features.

Related Article
August 1, 2017: Temporary suspension of Coincheck services:

Suspention date and time
July 23, 2017 12:00 AM (JST) → 1:00 PM (JST)


Services that will be affected
・Coincheck Payment


Features that will be affected
・Bitcoin deposit and withdrawal
・Payment feature
・Sending Bitcoin from wallet other than Coincheck Wallet (Receiving with Coincheck Wallet)
・Sending Bitcoin to wallet other than Coincheck Wallet(Sending from Coincheck Wallet)



About deposit and withdrawal


Please be careful not to deposit funds from “External Wallet” to “Coincheck wallet” after 12:00 am on July 23, 2017. If you accidentally deposit funds, it will be reflected on your account’s balance when we restart the deposit and withdrawal.

Also, after 12:00 am fund transfer to Wallet other than Coincheck Wallet will be suspended as well.


Deposit and Withdrawal Usage
Coincheck→Coincheck Available as usual
External Wallet→Coincheck Please don’t deposit funds after
2017.7.23 12:00 am
Coincheck→External Wallet Suspended after 2017.7.23 12:00 am


・Remittance between Coincheck wallet will be available as usual.
・ If you rush to withdraw funds to wallet other than Coincheck Wallet, we recommend using other cryptocurrencies.

・We may change a number of confirmations necessary for deposit from 3 to 10 before 12:00 am on July 23, 2017.
・In case when we decide that the Bitcoin fork may occur before July 23, 2017, 12:00 am, we may suspend features described above without prior notice before July 23, 2017, 12:00 am. We will make every effort to make advance notice by official SNS.



About resumption of service

The resume date is unspecified, but we expect to resume our services within several hours to several days only when we know that users’ assets are safe for sure. Also, if we decide that a Bitcoin fork will not take place on July 23, 2017, 12:00 am, the suspension of services will not happen. In this case, we will inform you separately by official SNS, blog etc.



About operation of altcoin exchange (Virtual currency other than bitcoins)

We are planning to keep suspension of services as minimal during Bitcoin fork event. However, since there is a possibility where we can’t send funds to our counterparty we may suspend virtual currency exchange without prior notice.



Thank you for your understanding and cooperation.
Moreover, the price of virtual currencies may fluctuate significantly during the event of Bitcoin fork.
Please be extra careful when trading.




※All date and time indicated in this blog are in JST.


Coincheck Cryptocurrency Exchange