MiCA 2026 Glossary: 25 Terms You Must Master

Why do you need to understand MiCA right now?

The European regulatory landscape has taken a definitive turn. What until recently was a crypto ecosystem marked by regulatory uncertainty is now transforming into a binding legal framework.

This change affects token issuers, exchanges, custodians, and any project operating with crypto-assets in the European Union. The MiCA Regulation is not a simple directive that Member States can interpret freely.

It is a directly applicable regulation. It is already changing the way companies develop their business models.

Why is mastering the MiCA glossary crucial?

If your project has European ambitions, mastering the language of MiCA is no longer optional. In practice, those who understand these concepts will not only avoid sanctions.

• Attract institutional investment
• Access banking services
• Build reputation in the crypto sector

This glossary brings together the 25 key terms that any founder, CFO, legal advisor, or compliance officer must master before 2026.

It is not about memorizing technical definitions. It is about understanding how these concepts impact your daily operations, regulatory obligations, and growth strategy.

MiCA: the new European standard that changes the rules of the game

The Regulation on Markets in Crypto-Assets, known as MiCA (Markets in Crypto-Assets), represents the first comprehensive regulatory framework of the European Union.

Main characteristics of the MiCA Regulation

What distinguishes MiCA from other regulations is its horizontal approach. It is not limited to regulating a single type of asset or service.

It covers everything from stablecoins to trading platforms. For an overview, you can review our Simple Guide to the MiCA Regulation

What MiCA means for crypto companies

Companies must adopt standards comparable to those of the traditional financial sector: transparency, corporate governance, capital requirements, audits, etc.

The 25 essential terms of the MiCA glossary

1. Crypto-Asset

MiCA defines a crypto-asset as a digital representation of value or rights that can be transferred or stored electronically using DLT technology.

More details at ESMA.

What is excluded?

• MiFID II financial instruments
• Bank deposits
• Traditional electronic money

2. Asset-Referenced Token (ART)

ARTs maintain a stable value by referencing multiple assets.

Issuer obligations

• Prior authorization
• Adequate reserves
• Robust corporate governance

3. E-Money Token (EMT)

An EMT is linked to a single fiat currency. Only authorized institutions may issue them. See guidelines at the EBA.

4. Crypto-Asset Service Provider (CASP)

A CASP is any professional provider of crypto-asset services. If you operate an exchange or custodian, this category applies to you.

See our internal article: How to obtain a CASP license in the EU.

5. Crypto-asset white paper

Mandatory document with technical, financial, and risk information. Basis for civil liability of the issuer.

6. Public offer of crypto-assets

Includes any communication inviting the acquisition of tokens. Triggers transparency and white paper obligations.

7. Admission to trading

Process required to list a token on a European platform. Exchanges act as a regulatory filter.

8. Crypto-asset custodian

CASPs responsible for custody of private keys. Require insurance, own funds, and asset segregation.

9. Trading platform

Multilateral systems that enable the buying and selling of crypto-assets. Require transparency and abuse prevention.

10. Reserve of assets

Funds backing ARTs and EMTs. Must be secure, liquid, and audited.

---

Key operational terms of the MiCA glossary

11. Competent authority

National supervisory bodies such as CNMV and Banco de España. See the list at ESMA.

12. Notification

Procedure to inform the authority about white papers or issuances.

13. European passport

Allows operation throughout the EU with a single CASP license.

14. Conflict of interest

CASPs must identify and manage conflicts between their own interests and those of clients.

15. Own funds

Mandatory minimum capital. Ranges between €50,000 and €150,000 depending on activity.

16. Asset segregation

Strict separation between CASP assets and client assets.

17. Market abuse prevention

Includes prohibition of insider trading and market manipulation.

18. Ongoing information

Obligation to report any material fact affecting the token.

19. Public offer exemption

Applies in cases of small offers or those directed at qualified investors.

20. Stablecoin white paper

Specific white paper for ARTs and EMTs, with enhanced requirements.

---

Advanced concepts of the MiCA glossary

21. Corporate governance

Requires competent bodies, audit, compliance, and risk management.

22. Business continuity plan

Plans to respond to technical failures or cyberattacks.

23. Complaint procedure

Transparent and free complaint management systems.

24. Reserve audit

Independent annual audits and publication of results.

25. Significant token

Systemically relevant tokens supervised by the EBA.

---

How can IN DIEM Abogados help in this process?

Mastering the theory is only the beginning. Implementing it correctly requires legal and technical experts. We invite you to learn about our Legal Services for Adaptation to the MiCA Regulation

Additionally, we have specialized technical support thanks to Cryptoveritas 360 in areas such as:

• Asset segregation
• On-chain traceability
• Technical audits
• Custody infrastructure

IN DIEM Abogados advises and represents companies before the CNMV, drafts the necessary legal documentation, and coordinates technical review with Cryptoveritas 360 to ensure comprehensive compliance.

Our firm offers comprehensive advice in all areas related to crypto-assets and blockchain, including:

• Law and Cryptocurrencies: we advise on Bitcoin, Altcoins, ICOs, NFTs, and blockchain-based projects, providing legal security from creation to the operation of any crypto-asset.
• Crypto Tax and Taxation: we offer expert guidance on taxation of cryptocurrency investments, buy-sell transactions, staking, DeFi, and airdrops, ensuring compliance with current regulations.
• Registration and Compliance with Banco de España: we guide cryptocurrency exchange and custody platforms in their registration and regulatory compliance, ensuring safe and legal operation.
• Adaptation to the MiCA Regulation: we help crypto companies comply with the new European regulation, covering everything from obtaining licenses to implementing anti-money laundering (AML) policies, consumer protection, and compliance auditing.
• Fraud on Web Platforms with Cryptocurrencies. Criminal: we offer legal defense and recovery strategies against fraud or scams on exchanges, wallets, or any digital investment platform.

In an increasingly complex and competitive regulatory environment, having a firm that understands both technology and law is key to minimizing risks and seizing opportunities. In Diem Abogados, in collaboration with its technology partner Cryptoveritas 360, does not only advise: it accompanies, implements, and ensures that your crypto company complies with regulations, integrates secure technological solutions, and thrives in the digital ecosystem.

IN DIEM Abogados, cryptocurrency experts at your service

At IN DIEM Abogados, we have the best experts in different branches of Law—Criminal, Civil, Administrative, Commercial, and Labor—ensuring at all times the advice and defense of our clients’ interests. Additionally, our firm specializes in the management and coordination of criminal and civil proceedings with groups of affected parties, which allows us to offer an effective joint strategy, optimize resources, and strengthen each client’s position within the process.

Contact IN DIEM Abogados 24 hours a day, any day of the week, without obligation.

We guarantee the best possible outcome, whatever your case.

• Personalized and professional service
• Advice on Taxation and Regulatory Compliance
• Assistance in tax, judicial, or other proceedings
• 24-hour contact with your expert lawyer
• Absolute confidentiality

Publications on Companies in our blog

IN DIEM Abogados: Málaga, Marbella, Sevilla, Madrid, Las Palmas de Gran Canarias, Almería, Huelva, Marbella, Estepona,…

IN DIEM Abogados has a team with experience in previous roles such as Judge, State Attorney, Public Prosecutor, or University Lecturer, which will provide you with peace of mind and confidence, as you will have the best team—competitive and highly prepared—to achieve your objectives and meet your needs.

We are at your disposal for whatever you need. You can reach us through the IN DIEM Lawyers Telephone (+34) 901 900 071. In cases of Emergency, you have us at the 24-Hour Emergency Lawyers Telephone IN DIEM: (+34) 610 667 452.

Did you know that IN DIEM Abogados offers an online service and an urgent service?

We offer our clients the option of being assisted via video call or videoconference, as well as by telephone, according to our clients’ preference, so that the assistance is as personal as possible, with absolute immediacy, without the need to travel. This service is complemented by communication via email, which facilitates the analysis and delivery of documentation.

Likewise, we have urgent and 24-hour services available for our companies, handling national and international contracting operations.

For more information on the Online Legal Advisory Service HERE, the 24-hour and Urgent Service, HERE, and some recognitions, we leave you this link.

Anything else about IN DIEM Lawyers? Here’s a short presentation video…

You will find us in Seville, Madrid, Las Palmas de Gran Canaria, Málaga, Huelva, Punta Umbría, Tomares, Coria del Río, Dos Hermanas, Mairena del Alcor, Estepona, Marbella, Mairena del Aljarafe… it will be a pleasure to serve you…!!