{"uid":"cap_nYdUVoQUnwH-E_wySyA7m","slug":"carbon-cashmere-btc-block-details-api-9679a731","name":"Carbon & Cashmere BTC Block Details API","description":"Professional crypto market intelligence. Real-time prices, signals, and market scoring.","url":"https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/%7Bheight%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"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}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ksEkAhH6XkhuBZZugcKcS","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"Pull the on-chain block stats from Carbon & Cashmere for Bitcoin block height 949815 — I want to see who mined it, the Taproot percentage, fee percentiles, and how many inscriptions were included.","exampleUseCases":[{"title":"Identify miner for specific block","prompt":"Can you check who mined Bitcoin block 950000? I want to know which mining pool found it and what the coinbase reward was."},{"title":"Analyze fee market trends","prompt":"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."},{"title":"Track Taproot and SegWit adoption","prompt":"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."}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:30:31.508Z","isFirstParty":false}