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TruthBear Stablecoin Graveyard Register
x402
TruthBear Stablecoin Graveyard Register is a paid API for AI agents from api.truthbear.co, paid per call via x402, $0.09/call, status unknown (last checked 2026-09-14).
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.
Price / call$0.09
Success—
StatusUnknown
How this service works
[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.
Output
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.
Example use cases
DeFi risk research audit
“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?”
Portfolio due diligence check
“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.”
Academic stablecoin failure dataset
“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?”
Technical details
Endpoint
GEThttps://api.truthbear.co/stable/graveyardWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"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
}
}Tags
x402
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