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Bitcoin Block Analytics API
x402
Bitcoin Block Analytics API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.03/call, status down (last checked 2026-09-14).
Returns per-block analytics for the last N Bitcoin blocks (up to 144), including fee distribution percentiles, SegWit adoption, UTXO set changes, block fill rate, and summary trends from a local Bitcoin Core node.
Price / call$0.03
Success—
StatusDown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
Returns a JSON object with a 'blocks' array containing per-block stats (fee percentiles, SegWit %, UTXO changes, fill rate), a 'summary' object with aggregate trends, the data source identifier, and an 'updated_at' timestamp. Data is sourced from a local Bitcoin Core node via getblockstats RPC.
Example use cases
Bitcoin fee market research
“I need a breakdown of Bitcoin fee percentiles over the last 50 blocks — show me the low, median, and high fee rates so I can figure out the best time to broadcast a transaction without overpaying.”
SegWit adoption trend monitoring
“Pull the last 100 Bitcoin blocks from your full node and give me a trend line on SegWit adoption — I want to know what percentage of transactions are using SegWit and whether that number is growing or stalling.”
Mining economics block analysis
“Give me mining economics data for the last 144 Bitcoin blocks — I want to see block fill rates, UTXO set changes, and fee distributions so I can understand how profitable the fee market has been for miners over the past 24 hours.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/block-analyticsWhen to prefer
Choose this endpoint when you need reliable, node-sourced Bitcoin block analytics including fee percentiles, SegWit adoption, UTXO changes, and fill rates across up to 144 recent blocks. It is ideal for fee market research, mining economics analysis, or on-chain trend monitoring where data integrity from a full node matters over aggregated third-party APIs.
Side effects
- blocks parameter exceeds maximum of 144 — returns validation error
- blocks parameter below minimum of 1 — returns validation error
- Bitcoin Core node temporarily unavailable — returns 5xx or timeout
- Payment not included or insufficient — returns 402 Payment Required
- Invalid query parameter type (non-integer) — returns 400 Bad Request
Output
Schema · Response
{
"type": "json",
"example": {
"blocks": [
{
"height": 941198,
"fill_pct": 98.2,
"tx_count": 3421,
"block_time": "2026-03-18T21:30:00Z",
"segwit_pct": 87.3,
"total_fee_btc": 0.234,
"utxo_increase": 1234,
"avg_fee_sat_vb": 15.2,
"feerate_percentiles": {
"p10": 2.1,
"p25": 5,
"p50": 12.3,
"p75": 25,
"p90": 45
}
}
],
"summary": {
"avg_fee_trend": "rising",
"segwit_adoption": 87.3,
"avg_block_interval_sec": 590
}
}
}Tags
x402
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