日時 : 2018年1月31日 18:00頃より開始(日本時間)
内容 : ブログへのアクセス、及びブログ記事の閲覧が不可となります
目的 : 安定性向上のため   




We will be performing maintenance on the official Coincheck blog on 01/31/2018. Affected services will be as follows:

Official blog maintenance

Start time: 18:00, 01/31/2018 (JST)
Details: The blog and all articles will be inaccessible during the maintenance period.
Purpose: To improve site security

We do not have a hard date yet for when the maintenance period will conclude. Please check the Coincheck corporate site and our official social media accounts for news and announcements while maintenance is ongoing.
Corporate site:
Official Twitter account:

We have added the information contained within the blog article "In regards to the suspension of certain Coincheck features" below. Thank you for your understanding.






本プログラムの再開の見込みは未定となっております。 この度はご迷惑をお掛けいたしまして申し訳ございません。 何卒、よろしくお願い申し上げます。


【Coincheck payment】一部機能の停止について

2018年1月27日17:00頃より、Coincheck paymentの一部機能が停止いたしますことをお知らせいたします。

Coincheck payment一部機能の停止について
停止日時:2018年1月27日 17:00頃〜






1/26 12:07





1/26 12:38 追記
1/26 12:52 追記
1/26 16:33 追記
1/26 17:23 追記
1/26 18:50 追記
1/28 13:20 追記



Order to Improve Business Operations from the Financial Services Agency

Coincheck, Inc. received an order to improve business operations from the Financial Services Agency based on the Payment Services Act defined in Article 63-16 in response to the illicit transfer of the cryptocurrency NEM following a breach of our platform. We earnestly accept the terms of the order and vow to re-examine our business practices while simultaneously striving to make all facts involved in this case clear, discover the root cause of the breach, safeguard our customers, and develop stronger and more effective measures for system risk management and prevention of similar events in the future.

Once again, we would like to offer our sincerest apologies to our customers and everyone else who has been affected by this incident. We will do our utmost to enact meaningful changes to our platform in order to regain the trust of our customers and the community.

I. Contents of Order to Improve Business Operations

1. Investigation of the facts and causes surrounding this case
2. Proper support of your customers
3. Strengthening of current measures to manage system risk
4. Creation of new measures for system risk management and prevention of similar events in the future in addition to making it clear where responsibility lies for different risks
5. A written report regarding items 1 though 4 to be turned in by Tuesday, February 13, 2018


Reparations policy towards users affected by the illicit transfer of the cryptocurrency NEM from Coincheck

This notice is to announce that a reparations policy towards the approximately 260,000 users affected by the recent illicit transfer of NEM from the cryptocurrency exchange platform Coincheck, run by Coincheck, Inc. (CEO Wada Koichiro), has been decided upon and will be as follows.

Reparations policy relating to the illicit transfer of NEM on 1/26

Total amount: 523,000,000 XEM
Affected users: Approximately 260,000
Reparations method: All affected users will be repaid in JPY via Coincheck Wallet Calculation method: Using XEM/JPY (NEM/JPY) rates on the cryptocurrency exchange Zaif (operated by Tech bureau Corp.), currently the exchange with the most trading volume of NEM both domestically and internationally, reparations will be calculated using the weighted average of turnover during a set period. The weighted average price was derived using prices during the period beginning with the suspension of new purchases and sales of NEM on the Coincheck platform and ending with the release of this notice. All reparations will be made in JPY.
Periods used in calculations: Suspension of purchases and sales (01/26/2018 12:09 JST) ~ Release of this notice (01/27/2018 23:00 JST)
Reparations amount: 88.549 JPY x amount of coins held
Reparations payment period, etc.: We are currently deciding on the best method for applying for reparations and the period in which they will be made. The principal used for reparations will be derived from company funds.

We realize that this illicit transfer of funds from our platform and the resulting suspension in services has caused immense distress to our customers, other exchanges, and people throughout the cryptocurrency industry, and we would like to offer our deepest and humblest apologies to all of those involved. In moving towards reopening our services, we are putting all of our efforts towards discovering the cause of the illicit transfer and overhauling and strengthening our security measures while simultaneously continuing in our efforts to register with the Financial Services Agency as a Virtual Currency Exchange Service Provider.

Thank you for your attention and your support.


Announcement regarding restrictions to certain Coincheck Payment features

This is a notice warning that certain Coincheck Payment features will be temporarily unavailable starting at 5 pm JST on 1/27/2018

Coincheck Payment feature restrictions:

Restriction period: 1/27/2018 5:00 pm JST ~ Restricted features: JPY withdrawals, Acceptance of new payments

The timeframe for full resumption of services is as of yet unclear. Users will still be able to login and access their dashboards during this period.
Please accept our sincerest apologies for this inconvenience.


*Urgent update regarding deposits of NEM*

Depositing NEM on Coincheck is currently being restricted. Deposits made to your account will not be reflected in your balance, and we advise all users to refrain from making deposits until the restriction has been lifted.

We sincerely apologize for the inconvenience this has caused everyone. Please follow the official Coincheck blog and our official social media accounts for updates.

Thank you.

Official Twitter account:

Updated: 12:38 pm, 1/26
We are also currently halting sales and purchases of NEM. Again, please accept our sincere apologies for this inconvenience.
Update: 12:52 pm (JST), 1/26
We are also currently halting withdrawals of NEM. Please accept our sincere apologies for this inconvenience and rest assured that we are working to resolve this issue as quickly as possible.
Update: 4:33 pm (JST), 1/26
All withdrawals from the platform are currently restricted, including JPY. Thank you for your understanding. We are doing our utmost to resume normal operations as soon as possible.
Update: 5:23 pm (JST), 1/26
Purchases and sales of cryptocurrencies other than BTC (altcoins) are currently restricted. Please accept our apologies for this inconvenience.
Update: 6:19 pm (JST), 1/26
Currently, credit card, Pay Easy, and convenience store payments are suspended. We sincerely apologize for these inconveniences and will continue to do our best to be back to normal operations as soon as possible.
Update: 1:20 pm (JST), 1/28
Deposits of all supported currencies except JPY are currently suspended. We apologize for this inconvenience and appreciate your understanding.