Self-custodial

With a self-custodial card, your funds sit in a wallet whose keys you hold — usually a smart account on a blockchain — not in an account the card company controls. The card can only move money when you authorise a payment, and nobody can freeze your balance or lend it out in the meantime.

Why it matters: custody decides who can touch your money, and it’s the first thing to pin down when you’re working out how a crypto card actually works. Self-custody removes the “the exchange froze my account” and “the platform went under and took my balance” risks that burned people through the 2022 collapses. The trade-off is responsibility — if you lose your keys, no support line can recover them — and a bit more crypto plumbing, like funding the wallet and keeping a little gas on hand.

For example: ether.fi Cash and Gnosis Pay are self-custodial — you spend stablecoins straight from your own Safe smart account. A card like Coinbase is the opposite: custodial, meaning the company holds your funds and you trust it to hand them over.