Dear valued customers, We have completed the futures database upgrade at 20:00 Sep 9, 2018 (HKT), earlier than expected. Although all services remained normal during the upgrade, some of our users might have received the error message “server internal error” within a short period of time, which was caused by the change of our operational servers. However, please rest assured that the error would not cause any issues to your account and assets. We apologize for the inconvenience caused.

Best regards, OKX 21:41 Sep 5, 2018 (HKT) -------------------------------------------------------------------------------------------------------------- Dear valued customers, Due to market volatility, the scheduled futures database upgrade will be postponed to 21:30 Sep 5, 2018 (HKT). Further announcement will be made when the upgrade commences. Please carry out neccessary preparation. We apologize for any inconvenience caused.

Dear valued customers, Due to the huge amount of futures trading bills stored in our database, it is essential for us do perform a data migration from 09pm-10pm on Jul 27, 2018 (Hong Kong time). During the migration, you will only be able to check the futures trading bills of the last 15 days. We expect that the data migration will take approximately one week. After the migration is completed, the futures trading bills of the last 3 months will be able to be retrieved.

We maintain our commitment to ensuring that OKX will always be a transparent and credible blockchain services company. Our cold wallet technical solution has previously been published on our site (https://www.OKX.com/wallet-security).

At OKX we're committed to delivering a localized experience for our customers and the launch of my.okx.com will allow us to keep enhancing our value proposition locally. We're looking forward to serving you better and continuing to be a part of your digital asset journey!

Polynomial commitment: we calculate the hash value of the computation trace and corresponding user balance, user ID, and the value of the corresponding constraint polynomial for each row, and generate a Merkle tree. The Merkle root is the commitment value of the polynomial. Generating sampling proof: using the Merkle root as a random source, we sample the data.

As always, we are committed to provide you with the best products and services! OKX 29 November, 2017

As always, we are committed to provide you with the best products and services! Best, OKX Team December 29, 2017

As always, we are committed to provide you with the best products and services! OKX 21 November, 2017

We appreciate your support and want to assure you of our commitment to providing the best services at all times. OKX team January 26, 2024

We’ll be committed to providing you with superior products and services! Regards, OKX team

It is committed to offering better services to users. If you have any comments or suggestions, please feel free to contact us: Email: okb@okx.com Telegram (English): https://t.me/OKXOfficial_English

It is committed to offering better services to users.If you have any comments or suggestions, please feel free to contact us: Email: okb@okx.com Telegram (English): https://t.me/OKXOfficial_English

It is committed to offering better services to users. If you have any comments or suggestions, please feel free to contact us: Email: okb@okx.com Telegram (English): https://t.me/OKXOfficial_English

It is committed to offering better services to users. If you have any comments or suggestions, please feel free to contact us: Email: okb@okx.com Telegram (English): https://t.me/OKXOfficial_English