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.

“It is superior to any email service.”
Google Play · 5/5 · 2026-03-23

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 2684163355

Proof data

Record hash (SHA-256): 0a541737f0356539674e60c6676662d416f66ae3e89b246391f682af71ed0047
Signature (Ed25519, base64): +rCh3A0/TmEH8gY8dlPo70MXYjwPND6QqkPz2kigako9HvS2NIQUBsV5l8LfC1Tbn91G3iVA2BAmXAq51vwwAA==
Merkle root: 404e3c13e38cb64105d39456b35227bf21885d8da4853edbdc28c1291169b69f
Merkle path: ["0a5559b5dd746fdf53736ff8b81ad88c0c58a2ff6112849922fcec878da12ce9","4ce9d77a70af89669466e1b741778bf2c80949b58751f48cc05cb2fb8310791a","344e8aca4a5cb25f50808cb91c33e54b326aa4b85172e97c93279e83051ca164","7cc01300e68406cc5b08b22b497544269b0d195a0317cb4875c27ebdb64d0ba4","135c54d76cc76bbdfd00b4bdbda4ee20c0996167bcf584ae25daa6b1472e3d3c","63c4992825b4ca221d408df7ab7b9a7493f62a1852aba1cbdde798659f10c4d0","ba5746527a61a2cb7ae07caed5bc2aae2de29d0b09acdcae9898554a007538d2","7daccecfd766bdb22742b742d9660a748fb8a22ab51afeec1527bc69ff8ed8f8","61351c3e30750fa1a95250684a0bbaa89409d7163d2073544be8f77f163596aa","825c94ef0a6237bbbc30bdc84240939e17310f927b28f4fa0f9f4a9bd9ed70f9","263bb5fe1d756a320f7da092b3cb67a1ad773b43ab1f099ba01e84624ad19778","5c0eadcd95032a9154ecd9aff9cf286ce38d392bb7e5263e65d22b770c6624a4","15d2e7111dd71c6ca8e6466c194f5ce08d202efe38071f7b3fe773e133385ebd","bde050f080e8537023a46ea459bb1518e1d885f47b2ddaedca03653a64f35bdd","63269a191012537d921c10ea30214f6deffddee0c8302c1d6e8c9845e6049806"]
Anchored: 2026-09-02
Public log entry: search.sigstore.dev, log index 2684163355 · entry 108e9186e8c5677a55e5…
Expected log hash: 4066e61b2031c5768194188ceb0300adcf0b5443c63f9d6a4476a0f6ecc5beac 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":"v1788335271191","kind":"published-quote","locale":"fr","page":"brand:proton","quote":"It is superior to any email service.","rating":5,"review_date":"2026-03-23","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 (404e3c13e38c…), 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.