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BTC fee curve
https://api.carbon-cashmere.de/v1/btc-derivatives/fee-curve
answers 402
Returns the Bitcoin smart fee curve for different confirmation targets.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.02
- Network
- base
- Pay to
- 0xf8b2dD46542175AD46e14e6133340E652665F2Ee
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 624 ms
- Payment options
- 7 usable of 7
- Last checked
- 2026-09-06T01:21:31.377Z (19d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.carbon-cashmere.de%2Fv1%2Fbtc-derivatives%2Ffee-curve"