Quote verification

This proves the quote below is recorded by Citatio exactly as displayed and has not been altered since it was committed and anchored. It documents Citatio's crawl observation; it does not imply endorsement by the source platform. The quote links to the original review.

“Claims to edit PDFs, but paywalls the save feature after you make edits”
Google Play · 1/5 · 2026-08-05

Checks (re-run on this request)

✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
✓ Public transparency log — Sigstore Rekor log index 2542443729

Proof data

Record hash (SHA-256): 66a31d55805f3ed609c996e377acfdfd373daa9dc4663450fb6e31b93ff74f34
Signature (Ed25519, base64): 4HU3CwPkDWADGn+kbguDzOmb9FSpT1BrEcpU+cUxXSedd1b2KId2/PKyTBQ8q7pPgyNpPP1/kKyl6Wa+cqA6Bw==
Merkle root: 4354cafe0e2ee66c200238a4bfe005f997e761de26d9e528ed6c12dfe1b33129
Merkle path: ["66a289fc4cb1f1404673f6a95d71bb5bdca1848e6c8712273edbcc8b9cb0ac9e","fa8b6d986a152025328cec48fe9bff4af58b990c1bc15f695e8bced2705b25ea","0a3afdc85b934ba9867bfeb7cefe75f9fc6944eabee0284ef67068979503d87c","7008d152caecb293724fbb101fd734307a01bfd444b40447be844182c5ce4d9f","e77989cb63cc718578dc880cb265451df015e59c2d4add50bb6b6e059ade130d","c98edd90b29b65474c6fbb3f4ea12515b3fa8be9b84a1be96ea0099ac4507e69","2854fb43f80c6da1b9941d48902f7310f2deb0c50108ddb5d16d53795ed54cbf","aab70d1b1e92564cb85394429ca1f50df17e828b3534eca2e33ffe159e1c4f95","ded288e05d84f6b1fcdafa00e5b9ae5c14b02ed4ec0811b6c7fa8c682a4e6c86","715d12590655f22f15948c7fba4939a5acde60faeff0288b06b0c17d67b51293","acd60d51959d8ea241d4cec578f498e04889a18ac38027355c026f33e421b596","562094a4371f74846c5c87c1bfbeeabaa173cb62a761690ee55d6e20f604307b","58001a430d202986e5fa4168d8e078e3b00d2bdf639864028966a0604dbcff6d","eb13252a020300a13cfcd1aad747dc15bb314823d4af7c0fa17270669f143f49","16ed4be9ece293c235c5510e2cd19a05055f034548e73c12f8a9947de7b32591"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2542443729 · entry 108e9186e8c5677aface…
Expected log hash: 1f12c9d846c7a9fd8aeda84057eb4d8f639bf78886a62c6290a2a60cd48e0812 The log entry's spec.data.hash.value must equal this value: the SHA-256 of the Merkle root string above. Recompute it yourself from the root to confirm.
Canonical record: {"dataset_version":"v1787280389476","kind":"published-quote","locale":"en","page":"product:acrobat/pdf-editor/en","quote":"Claims to edit PDFs, but paywalls the save feature after you make edits","rating":1,"review_date":"2026-08-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (4354cafe0e2e…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
Locally, without any Citatio infrastructure: SHA-256 the canonical record (must equal the record hash), verify the Ed25519 signature against the public key, and fold the hash through the Merkle path (sorted-pair SHA-256) to reach the anchored root.