{"uid":"cap_LIsZiJ8Qa4Gy6Wv00-9xY","slug":"truthbear-stablecoin-graveyard-register-746bf333","name":"TruthBear Stablecoin Graveyard Register","description":"[BATCH+PROOF] Stablecoin death register - terminated below 0.10 or persistently absent. Add ?verifiable=1 for per-row _hash_core, fully offline-recomputable. A neutral observation record: not a rating, not an endorsement. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.09 per call.","url":"https://api.truthbear.co/stable/graveyard","method":"GET","headers":{},"bodySchema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"verifiable":{"type":"string","description":"optional - set to 1 to attach `_hash_core` per row (the canonical pre-image of the record_hash for that row) so you can recompute and verify fully offline; omitted by default to keep the payload small - for online verification use free GET /gauge/verify?hash="}},"additionalProperties":false}}},"output":{"type":"object","required":["type"],"properties":{"type":{"const":"json"},"example":{}}}}},"responseSchema":{"type":"json","example":{"entity":"basis-cash-bac","current":{"state":"dead","ongoing":false,"death_type":"depeg-abandoned","lifespan_days":152},"lifecycle":{"peg":"usd","state":"dead","end_at":"2021-05-01","issuer":"Basis Cash (anon)","context":"The algorithmic stablecoin BAC traded below USD 1 for a long period and never regained its peg; after the seigniorage...","ongoing":false,"birth_at":"2020-11-30","mechanism":"algorithmic","death_type":"depeg-abandoned","lifespan_days":152},"signal_id":"stablecoin.lifecycle","source_ref":"https://www.coingecko.com/en/coins/basis-cash","entity_name":"Basis Cash (BAC)","observed_at":"2026-08-24T15:00:00.121Z","record_hash":"sha256:664da5b5c8cc399928a3149a49732e15d67f66d69b683e1469c0ab9871d8d702","source_tier":"T1","snapshot_date":"2026-08-24","data_age_hours":0,"hash_core_version":4}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.09","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":"$0.09/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.09","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.09","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Z-ZQUsAdY9X2F4-bkYF9i","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.09","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a historical death register of stablecoins that have been terminated — defined as collapsing below $0.10 or becoming persistently absent — with optional per-row cryptographic hash proofs for offline verification.","exampleAgentPrompt":"Can you pull the full stablecoin graveyard register — I want to see every stablecoin that's been declared dead (dropped below $0.10 or vanished), and include the per-row hash proof so I can verify the records offline?","exampleUseCases":[{"title":"DeFi risk research audit","prompt":"I'm doing a risk analysis on stablecoin counterparty exposure — can you fetch the complete list of stablecoins that have officially failed or collapsed, with their cryptographic hash proofs so I can independently verify the records?"},{"title":"Portfolio due diligence check","prompt":"Before I allocate to any stablecoin, I want to cross-reference it against the historical failure register — pull me the graveyard list of all terminated stablecoins that dropped below $0.10 or went missing."},{"title":"Academic stablecoin failure dataset","prompt":"I need a neutral, documented dataset of every stablecoin that has been terminated — defined as collapsing below ten cents or becoming persistently absent — for a research paper. Can you fetch that register?"}],"resultDescription":"A JSON list of terminated stablecoin records, each containing the stablecoin identity, the death condition (below $0.10 or persistently absent), and associated metadata. When the verifiable=1 query parameter is set, each row also includes a _hash_core field — a canonical pre-image of the record hash — allowing full offline cryptographic recomputation and verification. If no data is available the API returns a 422 no_charge error and the caller is not billed.","failureModes":["422 no_charge — no graveyard data available; caller is not billed","Missing or malformed query parameters may result in unexpected empty responses","Network or payment (x402) failures may prevent the call from completing"],"whenToPreferThis":"Choose this endpoint when you need a neutral, structured, auditable register of historically failed stablecoins — especially when cryptographic proof of each record is required for offline verification. It is purpose-built for stablecoin mortality data rather than live price feeds, peg-tracking, or general crypto market data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:41:51.456Z","isFirstParty":false}