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Signature Verification & Dual-Chain Attestation
x402
Signature Verification & Dual-Chain Attestation is a paid API for AI agents from 1c09pdnrx1.execute-api.us-east-1.amazonaws.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Verifies a cryptographic signature over (input_hash, output_hash, decision) tuple and anchors the attestation result on both Base and Solana mainnets
Price / call$0.01
Success—
StatusUnknown
How this service works
Verify a signature over (input_hash, output_hash, decision) and dual-chain anchor the result — $0.01 USDC
Output
Returns signature verification status (valid/invalid), plus transaction IDs from both Base and Solana mainnets confirming the attestation has been anchored on-chain, providing a tamper-proof dual-chain audit record of the signed decision.
Example use cases
Example prompt
“Verify the signature over this decision tuple — input_hash 0xabc123..., output_hash 0xdef456..., decision 'approved' — and anchor the attestation on both Base and Solana so we have a permanent dual-chain proof.”
Technical details
Endpoint
POSThttps://1c09pdnrx1.execute-api.us-east-1.amazonaws.com/v1/attestWhen to prefer
Use this endpoint when you need both cryptographic signature verification AND immutable dual-chain (Base + Solana) anchoring in a single call. Prefer it over the plain hash-anchor endpoint when you have a signed (input_hash, output_hash, decision) tuple and need provable attestation of an AI or agent decision, not just a raw hash commitment.
Side effects
- Invalid or malformed signature returns verification failure without anchoring
- Malformed or non-32-byte hashes cause a 400 bad request
- Blockchain congestion or RPC failure on Base or Solana may cause partial anchor failure
- Payment not included or insufficient USDC ($0.01) causes 402 Payment Required
- Replay of identical (input_hash, output_hash, decision) may succeed but creates a duplicate anchor record
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string | Freeform datetime string in any format. |
| timezone | string | IANA tz name (e.g. 'America/New_York'). |
| base_time | — | ISO 8601 reference; defaults to now UTC. |
Tags
x402
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