---
title: Digital asset custodian
url: "https://www.unknowngravity.com/en/glosario/custodio-activos-digitales"
site: Unknown Gravity
published: "2026-05-31T13:45:37+00:00"
modified: "2026-07-30T15:43:02+00:00"
language: en-US
description: "A digital asset custodian is the entity that provides the service of custody and administration of crypto-assets on behalf of clients, which in practice means safeguarding the cryptographic keys (in…"
section: "Home > Digital asset custodian"
---

# Digital asset custodian

GLOSSARY · BLOCKCHAIN & WEB3

What a digital asset custodian is: the entity that safeguards and protects the cryptographic keys of your tokens and crypto-assets on your behalf.

WHAT IS IT? · FOR DUMMIES

To move crypto you need a secret “key” (the private key). If you lose it, you lose your coins forever; if it is stolen, they are taken from you. Keeping it safe is complicated and nerve-racking. A **digital asset custodian** is like a bank's safe, but for those keys: a professional company that holds and protects them on your behalf.

That way, instead of keeping your keys on a piece of paper or on your phone, afraid of losing them, you entrust them to someone who specializes in security. It is especially useful for companies and large investors who handle many tokens and do not want to bear that risk on their own.

WHAT IS IT? · PRO

A **digital asset custodian** is the entity that provides the service of custody and administration of crypto-assets on behalf of clients, which in practice means safeguarding the cryptographic keys (in particular, the private keys) that allow those assets to be disposed of.

Where crypto-assets fall within the scope of MiCA, this service corresponds to the “custody and administration of crypto-assets on behalf of clients” regulated under the **MiCA Regulation (EU) 2023/1114**, reserved to authorized crypto-asset service providers, with obligations of asset segregation and liability. Where the tokenized asset is a financial instrument, custody is governed by the investment-services regime of MiFID II (Directive 2014/65/EU) and Law 6/2023 (LMVSI). The choice of framework therefore depends on the legal nature of the asset held in custody.

## 01 / Key points

- Safeguards and protects the **cryptographic keys** (private keys) of the client's assets.
- For crypto-assets: a service regulated by **MiCA (Regulation (EU) 2023/1114)**, with asset segregation.
- For tokenized financial instruments: **MiFID II** and Law 6/2023 (LMVSI) apply.
- Only **authorized entities** may provide it; it reduces the risk of losing or having keys stolen.

This entry is informative. It is not legal, tax or investment advice. The rules cited change: check the current version on [BOE](https://www.boe.es) and [EUR-Lex](https://eur-lex.europa.eu).