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CryptoVar VaR Artifact Verifier
x402
CryptoVar VaR Artifact Verifier is a paid API for AI agents from www.securaw.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-18).
Replays a CryptoVar Black-Scholes VaR calculation from its original parameters and audit proof to confirm the result is authentic and unaltered.
Price / call$0.1
Success—
StatusUnknown
How this service works
Verify a CryptoVar Black-Scholes VaR artifact by replaying its parameters, result and audit proof. 0.10 USDC. Returns valid true/false and the expected SHA-256 proof. An invalid artifact is a completed verification, not a service failure. CryptoVar artifacts only; no certification of model assumptions or future losses. Automatic delivery, 30-minute SLA. Idempotency-Key required.
Output
Returns a JSON object with a boolean 'valid' field indicating whether the replayed calculation matches the supplied VaR and audit proof, plus the expected SHA-256 proof hash for the artifact. An invalid result (false) means the artifact failed verification, not a service error.
Example use cases
Validating a received risk report
“I got a CryptoVar risk_snapshot report from a counterparty claiming a 99% VaR of $12,500 on a $200,000 BTC exposure with sigma 0.65, T = 7/365, seed 99, N 10000. Can you replay it against the attached audit and proof to tell me if the artifact is genuine?”
Pre-trade risk audit check
“Before I sign off on this trade book entry, verify the CryptoVar artifact: S0 = 1,000,000, sigma = 0.55, T = 1/365, seed 7, alpha 0.99, N 10000, VaR = 34,200, and here's the full audit block and proof — is it valid?”
Automated compliance pipeline integrity check
“As part of our daily compliance run, check this batch of CryptoVar snapshots — start with this one: exposure 500000, sigma 0.90, T = 7/365, seed 1234, N 20000, alpha 0.99, VaR 180000. Paste the audit and proof below and confirm whether the SHA-256 proof checks out.”
Technical details
Endpoint
POSThttps://www.securaw.com/cryptovar/x402/risk_verify?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to cryptographically confirm that a CryptoVar Black-Scholes VaR artifact has not been altered — i.e., that the VaR number, parameters, and audit block are mutually consistent and match the SHA-256 proof. This is the only endpoint for replaying and verifying CryptoVar artifacts; it does not model-validate assumptions or certify future accuracy, only artifact integrity.
Side effects
- Missing or malformed audit object causes a 400 error
- Audit object exceeds 8000 serialized bytes limit
- Idempotency-Key header absent causes rejection
- Parameters outside allowed ranges (e.g. N < 1000, sigma < 0, alpha < 0.9) cause validation errors
- Artifact from a non-CryptoVar source returns invalid
- Supplying proof_receipt inside the audit object causes a processing error
- Payment not attached or insufficient USDC causes 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| service | string | |
| parameters | object |
Tags
x402
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