Unhosted Wallet
Definition
An unhosted wallet, also called self-hosted or non-custodial, is a cryptocurrency wallet whose private keys are controlled by the user rather than by a regulated intermediary. The term comes from FATF guidance and EU regulation; transfers between exchanges and unhosted wallets face additional verification under the EU Travel Rule.
Same wallet, three names
"Unhosted" is the regulators' word (FATF, EU legislation), "self-hosted" appears in the EU Transfer of Funds Regulation, and "non-custodial" or "self-custody" is what the crypto industry says. All three describe the same thing: hardware wallets, browser wallets like MetaMask, mobile wallets like Trust Wallet (anything where you, not a company, hold the keys).
What regulation attaches to it
Since 30 December 2024, the EU Transfer of Funds Regulation applies the Travel Rule to crypto: for transfers above EUR 1,000 between a customer's exchange account and a self-hosted wallet, the provider must verify that the wallet actually belongs to the customer. That is why exchanges increasingly ask users to prove wallet ownership (typically via a Satoshi Test or a signed message) before releasing withdrawals.
FAQ
Are unhosted wallets legal in the EU?
Yes. MiCA and the Transfer of Funds Regulation regulate service providers, not self-custody itself. What changed is the verification around transfers between regulated platforms and self-hosted wallets.
Why do exchanges treat unhosted wallets more cautiously?
Because no regulated entity vouches for them. The provider must establish ownership and assess risk itself, which is why deposits from and withdrawals to self-hosted wallets trigger extra checks.
Guides on this topic
Free basic check · no card, no KYC upfront