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PriorSeal Evidence Receipt Check
x402
PriorSeal Evidence Receipt Check is a paid API for AI agents from priorseal.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Verifies the current status and validity of a previously issued PriorSeal evidence receipt, confirming finality state and receipt authenticity on EVM or Solana.
Price / call$0.02
Success—
StatusUnknown
How this service works
Connect explicit, pre-execution authorization to observed EVM and Solana execution with portable evidence another party can verify independently.
Output
Returns a JSON object containing the issuer (priorseal.xyz), the schema version, a unique checkId, the current status (e.g. CONFIRMED) and finalityState (e.g. FINALIZED) of the receipt, the signing algorithm used (e.g. Ed25519), and a receiptVerification object with a code (e.g. OK) and a boolean valid flag.
Example use cases
Pre-trade authorization audit trail
“I need to confirm that PriorSeal receipt psc_7x9qz2m1 is still valid and finalized before I release funds — can you check its current status and whether the receipt verification passed?”
Smart contract execution compliance check
“We have a PriorSeal evidence receipt ID psc_contract_deploy_88f for a recent Solana deployment — can you verify its finality state and confirm the authorization receipt checks out so I can include it in our audit report?”
Cross-party evidence handoff verification
“A counterparty gave me PriorSeal receipt psc_xfer_99dab2 as proof of their authorized EVM transaction — can you independently verify whether that receipt is valid and fully finalized so I can trust their evidence?”
Technical details
Endpoint
GEThttps://priorseal.xyz/v1/evidence/receipts/%7BreceiptId%7D/check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to independently verify that a PriorSeal evidence receipt is authentic, confirmed, and finalized — especially in multi-party workflows where one party needs cryptographic assurance that a pre-execution authorization actually corresponds to observed on-chain execution. Prefer this over general blockchain explorers when you need portable, signed evidence that a third party can verify without trusting the original issuer directly.
Side effects
- Receipt ID not found — returns an error if the receiptId does not correspond to any known receipt
- Receipt pending — status may be non-final if the underlying transaction has not yet reached finality
- Invalid receiptId format — if receiptId exceeds 512 characters or is empty, the request is rejected
- Receipt tampered or invalid — receiptVerification.valid returns false if the receipt signature does not pass
- Service unavailable — network or upstream blockchain node issues may cause transient failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"format": "priorseal.fresh-evidence-check.v1",
"example": {
"issuer": "priorseal.xyz",
"schema": "priorseal.fresh-evidence-check.v1",
"checkId": "psc_example",
"current": {
"status": "CONFIRMED",
"finalityState": "FINALIZED"
},
"algorithm": "Ed25519",
"receiptVerification": {
"code": "OK",
"valid": true
}
}
}Tags
x402
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