{"uid":"cap_-SDGuzBMuiqBcjI-sLuZU","slug":"proofaudit-ai-canonical-hash-verification-e1b1bcb7","name":"ProofAudit.ai Canonical Hash Verification","description":"Capture, verify, approve, and export audit-ready evidence packs for credit, compliance, and financial operations.","url":"https://proofaudit.ai/api/x402/canonical-hash?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input","output"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","POST"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","additionalProperties":{"type":"string"}}},"additionalProperties":false},"output":{"type":"object","required":["type","example"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ticker":"PROOF","network":"base","service":"ProofAudit.ai","success":true,"verified":true,"nodesPortal":"https://proofaudit.ai/nodes","sealedSha256":"PROOF-87B43B8DEB11505A","protocolToken":"0x87b43b8dEb11505ADc6898899961d6d419CaBB07"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.025","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.025/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.025","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.025","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Jt-8pkNVRssUpcuGDLK_f","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.025","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a sealed SHA-256 canonical hash and protocol token for ProofAudit.ai, verifying the service identity on the Base network for audit chain-of-custody purposes.","exampleAgentPrompt":"Can you verify the canonical identity of ProofAudit.ai and give me the sealed SHA-256 hash and protocol token address on Base so I can confirm the service is genuine before attaching its audit receipts to my compliance report?","exampleUseCases":[{"title":"Pre-audit service identity check","prompt":"Before I submit our compliance package to the regulator, can you confirm ProofAudit.ai is verified and give me the sealed hash and protocol token so I have a chain-of-custody anchor for the audit trail?"},{"title":"On-chain token address lookup","prompt":"What is the PROOF protocol token contract address on Base for ProofAudit.ai? I need to verify it matches what's in our smart contract integration before we go live."},{"title":"Automated integrity verification in CI pipeline","prompt":"During our nightly compliance pipeline run, fetch the ProofAudit.ai canonical hash and confirm the service is verified — flag it if the sealedSha256 or token address has changed since yesterday."}],"resultDescription":"A JSON object containing: service name ('ProofAudit.ai'), ticker ('PROOF'), network ('base'), a success and verified boolean flag, a sealed SHA-256 hash string (e.g. 'PROOF-87B43B8DEB11505A'), the protocol token contract address on Base, and a URL to the nodes portal.","failureModes":["Service unavailable or payment not processed — returns non-200 status with no JSON body","Payment insufficient — x402 payment rejection before endpoint is reached","verified field returns false — service identity could not be confirmed at time of call","Stale or mismatched hash — hash differs from previously cached value, suggesting a service update or potential tampering"],"whenToPreferThis":"Use this endpoint when you need to establish chain-of-custody proof or verify the on-chain identity of ProofAudit.ai before trusting its audit evidence packs. Prefer this over general blockchain lookups when you specifically need the sealed canonical hash and protocol token for compliance workflows involving ProofAudit.ai.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T12:38:52.050Z","isFirstParty":false,"canonicalSlug":"proofaudit-ai-canonical-hash-verification-e1b1bcb7"}