Getting Started

How BKJ Card Works: From Crypto Top-up to Real-world Spending

A step-by-step look at the BKJ Card flow — and what happens behind the scenes when you pay.

Reading time5 min read
UpdatedApril 2026
CategoryGetting Started

TL;DR

BKJ Card lets users use supported crypto assets for real-world payments. A typical flow is: create an account, complete KYC, activate the card, top up supported assets, and pay where the card network is accepted. At checkout, crypto value is converted into fiat currency for the merchant.

What is BKJ Card?

BKJ Card is a crypto payment card product that helps users connect supported digital assets with everyday payment scenarios. Instead of manually selling crypto, withdrawing fiat and then paying, users can use a card-based payment flow.

Step-by-step flow

StepUser actionWhat happens
1Create a BKJ accountUser enters the BKJ app ecosystem
2Complete KYCIdentity verification is completed according to platform requirements
3Activate the cardUser receives access to the card product
4Top up supported assetsUser adds supported crypto such as USDT, USDC or BTC depending on availability
5Pay with the cardCrypto value is converted for the payment flow and the merchant receives fiat

What happens during a payment?

When a card payment is made, the merchant does not need to receive crypto directly. The payment flow converts the user asset value into the required fiat payment, so the merchant receives local currency through the card network. This is why crypto cards are useful for everyday purchases even when merchants do not directly accept USDT or BTC.

Where can BKJ Card be used?

BKJ materials describe broad merchant coverage and support for online and offline scenarios. Typical use cases include online subscriptions, travel bookings, shopping, food delivery, local transportation and other card-accepting merchants. Availability may depend on region, merchant category, card rules and compliance controls.

What users should check before using the card

  • Whether the card is available in the user region.
  • Which assets and networks are supported for top-up.
  • Current card fees, FX fees, conversion rules and limits.
  • Whether Apple Pay, Google Pay or local wallet binding is supported.
  • What to do if a transaction is declined, reversed or pending.

When is a crypto card useful?

A crypto card is most useful when users already hold crypto or stablecoins and want flexibility. It is especially helpful for small and frequent payments, subscriptions, travel and online purchases. For large transfers or business settlement, a dedicated payout product may be more suitable.

FAQ

Do merchants receive crypto?

Usually no. In a card payment flow, the merchant receives fiat currency through the card network.

Can I use BKJ Card for subscriptions?

Crypto cards are commonly used for online subscriptions where card payments are accepted, subject to merchant and card rules.

Why can a card transaction be rejected?

Possible reasons include merchant category restrictions, insufficient balance, regional limits, risk controls, network issues or incorrect card details.

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Next: Crypto Card Fees Explained: Conversion, FX, ATM and Network Costs

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