{"uid":"cap_zVUVMY4WUVTzCNLFGnacZ","slug":"signature-verification-dual-chain-attestation-1ccdbb68","name":"Signature Verification & Dual-Chain Attestation","description":"Verify a signature over (input_hash, output_hash, decision) and dual-chain anchor the result — $0.01 USDC","url":"https://1c09pdnrx1.execute-api.us-east-1.amazonaws.com/v1/attest","method":"POST","headers":{},"bodySchema":{"type":"object","title":"DatetimeParseRequest","required":["input"],"properties":{"input":{"type":"string","title":"Input","maxLength":500,"minLength":1,"description":"Freeform datetime string in any format."},"timezone":{"type":"string","title":"Timezone","default":"UTC","description":"IANA tz name (e.g. 'America/New_York')."},"base_time":{"anyOf":[{"type":"string"},{"type":"null"}],"title":"Base Time","description":"ISO 8601 reference; defaults to now UTC."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_HRi1DWwLPuCDOT23W2BYZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a cryptographic signature over (input_hash, output_hash, decision) tuple and anchors the attestation result on both Base and Solana mainnets","exampleAgentPrompt":"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.","exampleUseCases":null,"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:45:08.997Z","isFirstParty":false}