Explanation on MKK Integration Procedure

Last Update: 26 June 2025

This MKK Integration Procedure (“Procedure”) has been prepared in accordance with the Capital Markets Law No. 6362 (“Law”) and the relevant capital markets legislation, in particular Communiqué III-35/B.1 on the Establishment and Operating Principles of Crypto Asset Service Providers (“Operating Principles Communiqué”) and Communiqué III-35/B.2 on the Operating Procedures and Principles and Capital Adequacy of Crypto Asset Service Providers (“Operating Procedures Communiqué”).

Pursuant to the relevant capital markets legislation, an integration will be realized between OKX TR Kripto Varlık Alım Satım Platformu Anonim Şirketi (“Company”) and Merkezi Kayıt Kuruluşu Anonim Şirketi (“MKK”).

1. MKK REGISTRATION NUMBERS OF CUSTOMERS

The Company shall allocate a separate customer identification number for each customer concluding a Framework Agreement and shall obtain a registration number for the customer from MKK and ensure that the registration number matches the customer number before accepting orders from the customer or sending orders on behalf of the customer. If there is a previously obtained registration number, it shall be matched with the customer number. Registry number retrieval and registry matching transactions on behalf of the customer from MKK shall be performed in accordance with the electronic transaction methods to be determined by MKK. The Company shall not provide services to customers that are not registered with MKK or cannot be matched to a registration with the MKK.

In the event that the right holders who change in the case of joint succession do not wish to conclude an agreement, the account will be closed by transferring the rights in the account to the joint successors within the framework of the documents proving joint succession, and this situation will be notified to MKK within three business days.

2. LISTED AND UNLISTED CRYPTO ASSETS

Listed and delisted assets shall be notified to the MKK. The principles determined by the MKK regarding the notification of listed and delisted crypto assets to the MKK shall be complied with.

3. REPORTING ON CUSTOMER CRYPTO ASSET BALANCES

The Company will integrate with the MKK for the reporting of customer crypto asset balance information held in the institutional book-entry system and will submit the reports requested by the MKK.

The Company shall comply with the procedures and principles set forth in the directive to be published by the MKK regarding the reports to be submitted to the MKK.

The reports submitted to the MKK by the Company and by the custodians will be compared by the MKK, and centralised book-entry reports will be generated as a result of this comparison. Customers will be able to view the centralised book-entry reports to be created by the MKK through the MKK’s E-Investor system by conducting a balance inquiry. Customers will also be able to compare the records of the assets reported to the MKK system via the E-Investor system.