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.

“A great alternative to Google and the like.”
Google Play · 5/5 · 2026-08-11

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 2621349433

Proof data

Record hash (SHA-256): 0e61b034c1b5e6bffa11f87433fa05ac0a3019171f3f0e1a844c18d475a51867
Signature (Ed25519, base64): pCMfnARGbg9MOqQOu0/QKEYNsyaPOVWwgKUaEr41gFJHjwlXupbrZpgktq5dDQkGBoWk5V2NtilaTcnUsMsSBg==
Merkle root: 52b348c94f3fdce59db013e2d8b151833bfb9c02163bc60ea07ad4321b96c806
Merkle path: ["0e5e46221e7b7eb57c2f8c2890d2cc3e9372624b6dd018f68075c0bd8ffc09d2","9c039c559f4ee10ab47e34a5785fe670a9ae54a2a2f7ebddd3822acd5121d3a2","3f2f196cbe2fdc0d3549841eeb19e37eb4c832707c23a367c85ddcca1ea102ac","faf63900619300158cb271b476e6b79e43d4b0721b34da0c669adb911d1291bf","26c87dbb86a607f2cb1159fff56a0b5d5f2f60a916183c807ffd0584e45d4d28","92aa38f185ec99a6a7d7cb585f16fa0d4e8caeb29acdd7097812afdfbff3d357","f292e76b18079eda5fd9f516f30140c5e11b5c258fa13482d549b01e07adc82a","0a3bea779eef0aafe98778f140c279fd98276abe7de81a1022bd3b0c51e85e5c","8976d43128c562a4bb9f5e73c2702341703ddb85e24651f808940bf457baf358","835a64f4ed5f0898827210f980dbff24533ea14e52b95d2f78a679d7fe15d6f7","6a62e9a1e2d27a02cf631b97d4856c5f025dd08f877bbeeaeef2359949b03342","669ab90fb715919711df59e8281fed40b96b704020c2f40755c68d0b3c101ec2","737cac4ca199ff9d501e9278c7c4cae2cea135754fbc58a1df4019ac06ac48eb","775de910b40798d9f37b75d39be79e50770b797482dba1aef04bba70619fff3f","50b301601f25f58ca39a522d1fc14c87ef92ff2847a542557119e06fa2bbb889"]
Anchored: 2026-08-28
Public log entry: search.sigstore.dev, log index 2621349433 · entry 108e9186e8c5677a91b8…
Expected log hash: c0c478568c16caefc62b4dd151387aace853e1d48501c09aaebf0c1fbe3c7cab 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":"v1787884935070","kind":"published-quote","locale":"en","page":"product:proton/proton-mail/en","quote":"A great alternative to Google and the like.","rating":5,"review_date":"2026-08-11","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 (52b348c94f3f…), 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.