Crypto Card Glossary
Clear, plain-English definitions of the terms you'll meet when using a crypto card — from stablecoins and VCCs to KYC and 3D Secure.
29 terms defined · Updated 2026-06-13
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- Card DeclineWhen a card payment is refused — due to insufficient balance, BIN restrictions, fraud checks or limits.
- Card FreezeTemporarily disabling a card so it cannot be used, then re-enabling it — a key security control.
- ChargebackA forced reversal of a card payment, initiated by the cardholder's issuer to dispute a transaction.
- Crypto CardA payment card on the Visa or Mastercard network funded by cryptocurrency, which converts to fiat at the point of sale.
- Crypto WalletSoftware or hardware that stores the keys used to send, receive and hold cryptocurrency.
- CVV / CVCThe 3-digit security code on a card used to verify the cardholder during online payments.
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- Self-CustodyHolding your own crypto in a wallet you control, rather than leaving it with an exchange or provider.
- Single-Use CardA virtual card created for one transaction or merchant, then discarded to limit exposure.
- Spending LimitThe maximum amount a card can spend in a period, often tied to the cardholder's KYC verification tier.
- StablecoinA cryptocurrency designed to hold a stable value, usually pegged 1:1 to a fiat currency like the US dollar.
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- Tiered KYCA verification model where minimal identity info unlocks basic use and additional verification unlocks higher limits.
- Top-UpAdding funds to a prepaid card balance — on a crypto card, by depositing stablecoins such as USDT.
- TRC-20The token standard for assets on the Tron blockchain, a popular low-fee network for sending USDT.
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