{"uid":"cap_DBLbKvIJG6LRVeNlBUyaV","slug":"api-carbon-cashmere-de-558ffd9d","name":"Bitcoin Coinbase ScriptSig Messages API","description":"Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political statements. Window up to 7d.","url":"https://api.carbon-cashmere.de/v1/btc-derivatives/coinbase-messages","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"count":144,"window":"24h","messages":[{"miner":"MARA Pool","height":949815,"message":"/MARA Pool/Made in USA/.."}]}},"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_2Ctj-O4PMDH6OjKlfzKLW","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 curated, printable-ASCII coinbase scriptSig messages from the Bitcoin blockchain, including pool tags, BIP comment campaigns, and political statements, within a configurable window up to 7 days.","exampleAgentPrompt":"Pull the Bitcoin coinbase scriptSig messages from the last 7 days — I want to see pool tags, any BIP comment campaigns, and political statements miners have embedded in blocks, for a protocol journalism piece.","exampleUseCases":null,"resultDescription":"A curated list of printable ASCII coinbase scriptSig messages from Bitcoin blocks within the requested time window (up to 7 days), categorized by type: mining pool tags, BIP comment/campaign messages, and political statements. Each entry includes the message text and associated block metadata, parsed from the provider's own Bitcoin full node.","failureModes":["Window exceeds 7-day maximum — returns error or truncated result","No messages found in the requested window — returns empty list","Node sync lag may cause very recent blocks to be missing","Non-printable ASCII messages are filtered out and will not appear","Rate limiting or payment failure via x402 protocol"],"whenToPreferThis":"Choose this endpoint when you need human-readable, curated coinbase scriptSig messages specifically (pool tags, BIP campaigns, political statements) sourced from a dedicated full-node parser with printable-ASCII filtering. Prefer it over raw blockchain explorers when you want pre-filtered, research-ready message data without having to parse raw binary scriptSig fields yourself.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:52:29.444Z","isFirstParty":false}