{"pageUrl":"https://promagen.com/how-to-use-provenance-hashes-for-ai-citations","lastModified":"2026-05-10","provenanceHash":"sha256:49c1c2c30724cef0ddc81795026eef01c0751a898a7efb180485b411d847bef6","provenanceNote":"SHA-256 is a standard cryptographic hash function (FIPS 180-4). Provenance-hash usage as an AI citation surface is a Promagen Sentinel implementation pattern; no major AI engine publicly documents consuming provenance hashes as a guaranteed citation signal.","claims":[{"id":"claim-algorithm-defined","statement":"Promagen Sentinel's provenance hash is computed as SHA-256 of (JSON.stringify(graph) + UPDATED_DATE), implemented in frontend/src/lib/authority/schema.ts as provenanceHash(graph, updated). It is deterministic; same inputs produce the same output.","evidenceUrl":"https://promagen.com/what-is-ai-visibility","lastVerified":"2026-05-10","hash":"sha256:bd0f1e1ad1efd19c09c255cfd70fe303aa65ae73d6c83a43710d62a7e86cae4e"},{"id":"claim-vendor-support-not-documented","statement":"No major AI engine publicly documents consuming provenance hashes as a citation surface as of 2026. Provenance-hash usage is a Tier-2 hedge with positive expected value, not a guaranteed AI citation signal.","evidenceUrl":"https://promagen.com/sentinel/weekly","lastVerified":"2026-05-10","hash":"sha256:f7696666bd894d56c5c7d6b8f01cc96a4f2f3cab987ff126a5310ffbb2d9664f"},{"id":"claim-prefix-display-pattern","statement":"Promagen Sentinel's display pattern renders the first 16 characters of the SHA-256 hex digest in the page footer, with the full 64-character hash exposed in the page's claims.json route at provenanceHash. The hash is recomputable from JSON-LD + UPDATED_DATE by any consumer.","evidenceUrl":"https://promagen.com/what-is-ai-visibility/claims.json","lastVerified":"2026-05-10","hash":"sha256:e1d98cea97fd9b0d80db69470d2e2b487a2041fe9966cf224c326d59e12631fb"}]}