Effective from 23 December 2025, MiCA crypto-asset white papers must be prepared in a machine-readable format using Inline XBRL (iXBRL), based on ESMA’s MiCA taxonomy.
The iXBRL requirement arises from the European Union (EU) rules on the format of MiCA crypto-asset white papers, set out in Commission Implementing Regulation (EU) 2024/2984, and it is directly applicable to all EU member states. The EU implementing regulation sets out harmonised principles for the white paper format and sets out the use of XBRL taxonomies published by ESMA.
For many token issuers, this is the first time regulatory content needs to be delivered as both a human-readable document and a structured machine-readable data format.
To help issuers meet the new format expectations confidently and on time, based on the compliant CoreFiling Seahorse tool, we are launching a dedicated MiCA iXBRL tagging service for crypto-asset white papers across the EU.
What’s changing under MiCA
MiCA introduces a standardized, EU-wide approach to presenting and sharing white papers with regulators and the public. Beyond the legal content itself, issuers now need to ensure their white paper is:
- Correctly structured and machine-readable
- Tagged using ESMA’s MiCA iXBRL taxonomy
- Consistent, complete, and technically valid for filing workflows.
For teams that already have legal, product, and compliance writing under control, the iXBRL step can still become a bottleneck, especially close to launch timelines.
What Orients is offering
We focus on the technical and quality side of MiCA iXBRL preparation.
iXBRL tagging of MiCA white papers
- Tagging content to the ESMA MiCA taxonomy
- Producing a compliant iXBRL package.
Validation & quality assurance
- Technical validation: schema/taxonomy checks, iXBRL rendering checks
- Consistency checks between narrative sections and tagged facts
- Common issue prevention (readability of block tags, avoidance of executable code, incorrectly encoded images, duplicated tags, incorrect units/dates, formatting breaks).
Submission readiness support
- A “filing-ready” handover set: iXBRL file(s), supporting assets, and a short validation report
- Optional walkthrough with your legal/compliance team so they understand what was tagged and why
Who this is for
This service is built for:
- Token issuers preparing MiCA white papers ahead of publication
- Legal and compliance teams who want a reliable iXBRL production partner
- Crypto-Assets Service Providers (CASPs) and advisors supporting multiple issuers and needing repeatable delivery.
What you’ll get
Depending on your project, deliverables typically include:
- MiCA white paper in iXBRL format
- Taxonomy-aligned tags applied and reviewed
- A concise QA/validation report describing checks performed and key assumptions
- Iteration support for one or more review rounds
Our CoreFiling Seahorse tool provides an interactive, user-friendly Inline XBRL viewer document, as well as a review spreadsheet.
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