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.

“Fastmail had made me fall in love with email again!”
Google Play · 5/5 · 2026-08-15

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): 2e2f9e1397265775499af14fd2031cc5d83f22f16620ece3c619742fe1c048d5
Signature (Ed25519, base64): rMSbv7MlUIobKVYXKCEzuZ+ExbXMuLhdiRdVvbcPVrVo28cyIuUwl9sRfB3bpNWKf5rPHcYvm3Nrg/DKvOoaDQ==
Merkle root: 97eb1062a862b99998bef0a84476eb3c3812bb77c2cb927f4fd2933b59da9e3d
Merkle path: ["2e2b4b0643881091bf55664a1344381d0269a82947a752b0f0b1a49a3a3bc108","394a77728e17d099823346b48244831f76be6005d90521bb2ba7e2e43a6e3428","316cb0ac5136fc4c6c22b08b3f5bc69a205561aa87cb02f56c96cbfc0e22b630","eb8fae5623dbfaa404bdc2571e0a89259608d7ed7416839242363bb1a22bb760","f809dc48de10fba23b6503dbe22cc479b77006d8469104f17f456f8954cd8c4e","0f869fb1d2c0bb77472dd5ca4c77fce8c81721842223ad1037c0cac66116603e","189ebc1f7f6564f6ed4a2642fc7e12d818ab240aac00e2b68cf02db2bce5da25","59fdb47593f2299225ddaa4dbd7afd4371a8727f16425855ab0a06a62737e846","a2e60756982b5c1b13f30600a25c2dc5f40651aed45d6c541035e8dfa83b43bc","4891d737a9f38d4a4a07c06ce912680920ff9d5517eea6b888bb67e89f57d2d4","5553ed2457f1c23af88ee778f913c101570661a707416f00741f020e76998f21","c3f635ba717eeeb5ba2ef9ddb3d4150c23b49c53fc05a76fef371e9ad8330b6f","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:fastmail/quality/en","quote":"Fastmail had made me fall in love with email again!","rating":5,"review_date":"2026-08-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.fastmail.app","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.