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api.carbon-cashmere.de btc-derivatives whale-stream
https://api.carbon-cashmere.de/v1/btc-derivatives/whale-stream
payable
Bitcoin whale transaction feed (>10 BTC default) with fee-rate, RBF flag, ancestor-count enrichment. ⚠️ output_btc includes change-outputs — activity proxy, not net transfer.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.05
- Network
- base
- Pay to
- 0xf8b2dD46542175AD46e14e6133340E652665F2Ee
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 566 ms
- Payment options
- 7 usable of 7
- Last checked
- 2026-08-10T09:16:28.308Z (1d ago)
- Category
- data
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.carbon-cashmere.de%2Fv1%2Fbtc-derivatives%2Fwhale-stream"