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.

“Bon fournisseur d'e-mail.”
Google Play · 5/5 · 2026-08-12

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 2683067189

Proof data

Record hash (SHA-256): 09c9dbac703ff3475dd0819551c17f3fbda381022405dff337fe5b16307ce8ee
Signature (Ed25519, base64): n22fUFoflobFuhdvenoiGvQAPRpL8nI6oeMZPY3ZbSiIfe4FbXpSSIEB2W9Hs1m+YV4hGfvikFsfuYhcttxNCQ==
Merkle root: e9eeb983f03a0398b81b34607113606fd08344986404ca2fd3833825a7e94579
Merkle path: ["09c6e6bc0f87ea595d892104975171ac363a704228b024b0b6c50206bb691de1","0751db84735e4bb72e4d7f5478e76fb2a6a0f86b536ea17cae1f69a4313d7a5e","1cc602b868a43430d02630ff6b83d23124b4d2bb259d55cc2a9fba6db0984da9","86ed1ac6753c211c2b7d93ed86ae2cc29b624c6ab08de0531f3884f1342e3cc2","36424eabae753b3b3fe815b2f02f472692b33f41c7cb461ec3ee6ea5a0d8eeaa","d701987fcd2219fcbdbc80302428f85b44b689487190ab16d60eb2ea942f2c79","ba68dc88ed4c4b24f2fbe849405d7bbb82cf8482c03684fcf87bb27319c1db6f","b06a6710d06e2fc6a60c963a62b6c9e83528879bbab261ad597c795777e2330f","205ba796a809e24014b64a92aa7842461702cd1c438ff61f35f6f71115b617ff","6e48c0ca42d411c8b17a1baff39cd2906e4d876e1fc28e940bd74545fe9a28a8","a6b04dee1fa0d4056c1c17c344e9ff2bdba4d0dde788a156c6e489a2f1a49b74","2ad97722e8da7516323cdd04d81b95132fef4981833eea2aa6791875ed51c1e6","ba4371f67b7f776c739ea6207a9ff5067e69ce019c6d5bd41a42f8072f7ed81f","a6b427a2f3256c856277207e0cdd685da44a55e8c92f43cd0d02d89d7461d4a0","b3d41fb4f6e87ff5fe6a837b02724589e91e4022991402ae86aae7e45d7e236e"]
Anchored: 2026-09-02
Public log entry: search.sigstore.dev, log index 2683067189 · entry 108e9186e8c5677a310a…
Expected log hash: 11a34733826b689558c4d879f61e5a1738be0bb85240429ae2a127898406f787 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":"v1788319785702","kind":"published-quote","locale":"fr","page":"product:proton/proton-mail/fr","quote":"Bon fournisseur d'e-mail.","rating":5,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.android","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 (e9eeb983f03a…), 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.