{"uid":"cap_SW4ScCM-kaZjc84kn-Ltq","slug":"rubric-protocol-c2pa-verdict-attestation-e35cc7f9","name":"Rubric Protocol C2PA Verdict Attestation","description":"C2PA verdict attestation Tier A. POST raw asset bytes (max 25MB). Rubric runs Google Credentio validation in-sandbox, an","url":"https://rubric-protocol.com/v1/c2pa/verdict-attest","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object"},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["binary"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"format":{"type":"string"},"example":{}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.25","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":"$0.25/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_NXPsLKlu6Ld_yRKz7NRfA","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.25","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates and attests C2PA content provenance of a raw digital asset (up to 25MB), returning a signed, sandboxed verdict proving authenticity or tampering","exampleAgentPrompt":"Check this image file for a valid C2PA provenance signature and give me an attested verdict — I need to know if it's authentic or tampered with before we use it in our campaign.","exampleUseCases":[{"title":"Pre-publication media authenticity check","prompt":"Before we publish this press photo, run it through C2PA validation and give me an attested result showing whether its provenance is intact and it hasn't been manipulated."},{"title":"AI-generated content screening","prompt":"We received this video clip from a vendor and need to verify it wasn't AI-generated or altered — can you get an attested C2PA verdict on the file?"},{"title":"Legal evidence provenance verification","prompt":"I need a cryptographically attested C2PA verdict for this document image to prove it's unaltered for our compliance records — please validate and attest its provenance."}],"resultDescription":"A signed, sandboxed C2PA verdict attesting the authenticity or tamper-status of the submitted asset. The attestation is produced via Google Credentio validation run in an isolated environment, yielding a verifiable cryptographic proof of the content provenance decision.","failureModes":["Asset exceeds 25MB size limit — rejected with payload too large error","Asset has no C2PA manifest — verdict returned as no provenance found","Invalid or corrupted binary payload — parsing error returned","Sandbox validation timeout for large or complex assets","Payment failure (x402) — request blocked before processing","Unsupported file format — validation cannot be performed"],"whenToPreferThis":"Choose this endpoint when you need a tamper-evident, third-party attested C2PA provenance verdict rather than a simple client-side check. It is especially appropriate when legal defensibility, audit trails, or regulatory compliance require a signed, sandboxed attestation from an independent verifier. Prefer it over DIY C2PA library validation when the verdict itself must be cryptographically provable to a third party.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:39:48.507Z","isFirstParty":false}