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.

“No AI analyzing your correspondence for targeted ads.”
Google Play · 5/5 · 2026-08-22

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 2789279696

Proof data

Record hash (SHA-256): 4a0c10975f9f4275736e89d0ab47de008735a739289a2f74fb579e9f0059fba6
Signature (Ed25519, base64): H0MxlSR4iEzOUbi9/zO6JhekCN3y76R7Zv0YxgLpjEzyyRkfg6ekwc/3expolj2V6hqCEtngG8pVDDfXKmyGAQ==
Merkle root: 97eb1062a862b99998bef0a84476eb3c3812bb77c2cb927f4fd2933b59da9e3d
Merkle path: ["4a0b0eba44c5c1530846b3a8c6dcb61ba405518cfab7ee38b62b036975304b6f","83a5a3d31ddc9b9dcd01c0aa75b472a3f7bcdbd33508cc39a35a853522c49c1e","60ce10638c1073116452d34303e34c28a1c4a8395706ae5f771f768994f70e17","5fdab8d54ef30c3b5d352a0ab770349a19b521199fe0c91d5cc482df0912c51f","7319a3bb59979604407665a97e811b493d7de5482bc710002e1268d1c96cf709","f30139c9d946fff6fe9752f120c41ea613b8f94a530015906f370110d4e326dd","230b22ca6034ea6bf5383761bbb50770701d69d82d367201adc6f20a07d547b6","d869b7fac0b654621161baca5d5b302048753fb51c1c5909595b8b9ce57bc1ed","69f2a77266ba35e6d322c8bdb278b01ab26aa8ea394f6e82c8fffc2cbe64d112","6dbdbc3fb88afe6bf636e2695e76bee0a6b1e4d9e579d907d1cf1438f03fdc78","d3a7bd3c71331cdbbc263d45811b1aa92d779199c11eb4bbb8cac215c32a530d","aa7c727744c972cb66fba1d64eea69090f0779e70821de9cee298fb3fcfb9463","b2cde2091952330dc6d7773f9467df58d2e8463851174cad44d4f743c8f8617f","a9559f2ca8536f2c18bf059f3f0099d62235a93ac35dc17b09967d392b72be7f","01242865574478f13dcf9d888236d7a907264abdb87f360db7db06de0945075a"]
Anchored: 2026-09-11
Public log entry: search.sigstore.dev, log index 2789279696 · entry 108e9186e8c5677a3885…
Expected log hash: 05c7009ecf7ce5cf315c252c2a1dd135e64989a02cacdaaa3c5a87412a2e921c 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":"v1789017464005","kind":"published-quote","locale":"en","page":"theme:tuta/service/en","quote":"No AI analyzing your correspondence for targeted ads.","rating":5,"review_date":"2026-08-22","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.tutao.calendar","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 (97eb1062a862…), 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.