{"uid":"cap_C_8uDiMXPcslKBKRDGjEy","slug":"glassnode-provably-lost-btc-supply-0bdc737f","name":"Glassnode Provably Lost BTC Supply","description":"Provably Lost Supply — The total amount of BTC that is provably lost, covering coins that fall into one of three categories: unclaimed miner rewards, BTC sent to burn addresses, and BTC sent to OPRETURN outputs. Data by Glassnode.","url":"https://x402.glassnode.com/v1/metrics/supply/provably_lost","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["a"],"properties":{"a":{"enum":["BTC"],"type":"string","description":"Asset symbol, e.g. BTC, ETH"},"c":{"enum":["native","usd"],"type":"string","description":"Currency for denominated values, e.g. usd, native"},"f":{"enum":["csv","json"],"type":"string","description":"Response format: json or csv"},"i":{"enum":["24h"],"type":"string","description":"Time interval / resolution, e.g. 24h, 1w, 1month"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"array","items":{"type":"object","properties":{"o":{"type":"object"},"t":{"type":"number"}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_rwuKg57USR0WhIjsKg9XG","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the total amount of BTC that is provably lost, covering unclaimed miner rewards, BTC sent to burn addresses, and BTC sent to OP_RETURN outputs.","exampleAgentPrompt":"What is the current total provably lost Bitcoin supply according to Glassnode — including burn address coins, OP_RETURN outputs, and unclaimed miner rewards — give me the result in native BTC?","exampleUseCases":null,"resultDescription":"A time-series array of data points, each containing a Unix timestamp and the corresponding provably lost BTC supply value (covering unclaimed miner rewards, burn address coins, and OP_RETURN outputs), returned in JSON or CSV format.","failureModes":["Missing required 'a' (asset) query parameter returns a 400 error","Unsupported asset symbol returns a validation error","Invalid currency or format enum value returns a 400 error","Payment not completed or x402 payment failure returns a 402 error","API rate limiting or overload returns a 429 or 503 error"],"whenToPreferThis":"Use this endpoint when you need authoritative, on-chain data on provably lost Bitcoin supply from Glassnode, particularly when distinguishing between categories of permanently inaccessible BTC (burn addresses, OP_RETURN, unclaimed rewards). Prefer this over general crypto data APIs when precision and on-chain provenance are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:57:54.274Z","isFirstParty":false}