Blink Card vs KAST
Head-to-head on the facts that decide your money - fee stacks, KYC, the bitcoin flow and limits.
Short answer: KAST wins overall (7.2/10 vs null/10). The right pick still depends on your priority - see the flow comparison below.
| Blink Card |  KAST | |
|---|---|---|
| Overall score | not documented | 7.2 |
| BTC load | Direct BTC top-up (on-chain) | BTC via in-app conversion |
| BTC sale timing | BTC sold per transaction | Not documented |
| KYC | Full KYC | Full KYC |
| Custody | Hybrid | Custodial |
| Top-up fee | not documented | 0% |
| FX fee | not documented | 2% |
| Monthly fee | ? | none |
| Cashback | none | 1.5% in USD |
| Regions | unknown | GLOBAL, US, EEA |
Pick Blink Card if
- Lightning top-up support
Pick KAST if
- Higher documented cashback (1.5% vs none)
- Wider documented availability
Blink Card
KAST
The most complete stablecoin-spending account on the market: US/EU virtual bank accounts from anywhere, Visa Platinum cards with real 1.5% USD cashback on the free tier, instant cashback and no spending caps. Full KYC and a young operator are the trade-offs; the paid tiers only make sense for heavy spenders.
FAQ
Which is better for privacy, Blink Card or KAST?
Blink Card requires Full KYC, while KAST requires Full KYC. Lower KYC means less data exposure - and weaker regulatory protection if something goes wrong.
When does my bitcoin get sold on each card?
Blink Card: BTC sold per transaction. KAST: Not documented. Sale timing determines your price exposure between loading and spending.
Which is cheaper overall?
Compare the full stack - top-up, FX, monthly, ATM - against your own spending mix in the fee calculator. Headline numbers alone flip with real usage.