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.

“Proton gives me the convenience of a digital calendar”
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 2543547848

Proof data

Record hash (SHA-256): 0a698e0ec2139d08e8a1f427ce7d27c37fceb02eab35b5caea5fa513366d9f21
Signature (Ed25519, base64): p0SxTsY6Q8sVaGT0BfqHY/PfAEq/KsQ8Osxr1uGXgsO9PfYlBtxZCZtQqBnwG6bD5GVrgHThyoNArQ4NkrZbBQ==
Merkle root: aacc11945f125ee3fcdef86ba030016c440bcc608f4e51f0ffffdb4cdc5e9321
Merkle path: ["0a613ee568c9e3b8ff37adee209210c37ab33bf797d0011543d1c0b26c01d6b6","40f9b3f84f8af406f9a25935117fe9823dff23e38e3d28739a482294830b2394","818124f136e9a51853e80c36201290c1a8a77480104a5cd328dafd0478015e6b","86373ed16902c441004c5106705163e746af3fd38d46664be06279cc3fbae47e","b496387de591858b031436039f4c4dced439e044bf54a890d0207cab3c6a9c07","f0af63a352fefd2af40f5697af441d31da57f395f43ce0a418b08cb65ff8b923","8e7babd887bf47bd5e1da86864564b8ccc2af88922a4e754513448e52ff09044","7922c6df0447072e2087387e3b8bf8f1a7c12bc563818f6285495fe944939a04","94cfb0239410d09e88aa2236d2855ddb7cdef4d99b70dd68fa997ae3bd21cb02","b516c72616a1fc1d8e3283deb655e527ba6a2b4ecaf980f5a8dff3acfce7d6d8","c6b7579f0c2d00b6f21dd4794b77c17a9903005eef2a8ca358b0a9be5dfc0d60","1c918bc7133b8b33cf667d10d785c214a1388e2dc21092f234795be8425f7f3f","24192d1fe3fa8596b225aa5d8055e7e92d26709ec190f1226b913a3e227f64c3","5366af6eb1ce50b0f459da15c1d7eb12649d0477ecd930804e506d3f2ff66aa2","2309962142b16600f7fc4d57273f3042f382acb91be89aac7f00112f61b58f1d"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543547848 · entry 108e9186e8c5677a921a…
Expected log hash: bb93f13ee7a4a636e28586b842e19662b148eb18166a89b3ae7d189bb8e81689 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":"v1787286345433","kind":"published-quote","locale":"en","page":"product:proton/proton-calendar/en","quote":"Proton gives me the convenience of a digital calendar","rating":5,"review_date":"2026-08-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.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 (aacc11945f12…), 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.