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Carbon & Cashmere BTC Block Details API
x402
Carbon & Cashmere BTC Block Details API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Returns on-chain statistics for a specific Bitcoin block by height, including transaction count, miner pool, Taproot/SegWit adoption, inscriptions, coinbase reward, and fee percentiles.
Price / call$0.02
Success—
StatusUnknown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
A JSON object containing the block height, transaction count, miner pool name, Taproot adoption percentage, SegWit witness percentage, OP_RETURN count, inscription count, coinbase reward in BTC, and fee percentiles (p10, p50, p90) in sat/vB.
Example use cases
Identify miner for specific block
“Can you check who mined Bitcoin block 950000? I want to know which mining pool found it and what the coinbase reward was.”
Analyze fee market trends
“Look up the fee percentiles for Bitcoin block 949500 — I need the p10, p50, and p90 sat/vB figures so I can understand what people were actually paying to get confirmed in that block.”
Track Taproot and SegWit adoption
“Pull the on-chain stats for Bitcoin block 950100 and tell me what percentage of transactions were using Taproot and SegWit — I'm trying to track how quickly script type adoption is progressing block by block.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/btc-derivatives/blocks/%7Bheight%7DWhen to prefer
Use this endpoint when you need granular per-block Bitcoin on-chain analytics including miner attribution, script type adoption (Taproot/SegWit), inscription activity, and fee market data for a specific block height. Prefer over generic blockchain explorers when fee percentile breakdowns and miner pool identification are needed programmatically at low cost.
Side effects
- Block height not found or not yet mined returns 404
- Invalid or non-integer height parameter returns 400
- Payment not completed or x402 flow not fulfilled returns 402
- Rate limit exceeded returns 429
- Service unavailable returns 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"height": 949815,
"tx_count": 1898,
"miner_pool": "MARA Pool",
"taproot_pct": 0.84,
"witness_pct": 99.42,
"op_return_count": 1844,
"inscriptions_count": 3,
"coinbase_reward_btc": 3.1287,
"fee_percentiles_sat_vb": {
"p10": 1,
"p50": 1.8,
"p90": 7.1
}
}
}Tags
x402
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