ESMA statement on implementation of MiCAR data standards and format requirements

The European Securities Markets Authority (ESMA) has issued a statement to support the smooth implementation of the regulation on markets in cryptoassets (MiCAR) data standards and format requirements. The statement provides technical specifications on:

• The format of order book records for cryptoasset service providers (CASPs) operating a trading platform for cryptoassets, as defined by Commission Delegated Regulation (EU) 2025/416.
• Record-keeping obligations for CASPs as defined by Commission Delegated Regulation (EU) 2025/1140, specifying records to be kept of all cryptoasset services, activities, orders and transactions undertaken.
• Presentation of transparency data by CASPs operating a trading platform for cryptoassets, as defined by Commission Delegated Regulation (EU) 2025/417.
• Format and data standards requirements for MiCAR white papers, under Commission Implementing Regulation (EU) 2024/2984.
• Data necessary for the classification of cryptoasset white papers, as defined by Commission Delegated Regulation (EU) 2025/421 and the practical arrangements to ensure that such data is machine-readable.

This public statement aims to provide further practical guidance to market participants in complying with the above requirements.

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