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.

“plus security and privacy”
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 2594047033

Proof data

Record hash (SHA-256): 093352f10aab10051144e685f0b3b0aa09309b67fe7c2fac68642dd2df597fb3
Signature (Ed25519, base64): XC7/4mDvKLJcuuFKUq1m/w85BCbpM6wTTIba5thADOBs2MvJJEJys+hAiuU6FZpcuiEY2XG+rcTRYlQXjtbVAA==
Merkle root: bdc4b63265a70d38726c98a51a2f6fe0c825529e253e2d0102798be7f72f5677
Merkle path: ["092e8c00b9271e028aca2230b1e0ffc0fea8bd6e6cc87293b21ad29179448cae","ec768ef4288faf5b5dd03735f40a378746410ed0b9d67c827c4380adda4296b4","1c441114c70bf08c1765f5e524f166c667718d175d8e52991baf5a65efc43b13","319db10752fb1af62d788c39fcf48c010e6d6fbe348eccf7af1694f26faa34cb","43819e223f467bbd0e69ecc6313200a94e79a3ad219cf0472b3b0e58db05bbfd","fb144c8c842ab97c989cd9e751d6040bd46ceed4b047e887b1fbb0c698e64ec8","bffe87e02bd2eae3a78ad396febb290c55be16779fb3b4d570af45ad6b9f7fb5","dfe735ce5a68617ee54b58a5d4bd52303ea7fce4c39801d3a064f32c3eb9cd05","32eb67a84af1a0afc0add487492afb9be1c6388599fd6053803372008f54c0fc","7e61a288f9c1fa3c765990a71ce9d2f4e758b4a645a674d9e9708e01931e6246","72d4c92c91ed4c6c812d6b80e88ac6a2774c8fe7fe59150f5f5bd8e7c727b6aa","aebde396b6326cd6ef4fe2b336efcca55f425b58989be7e1932fe8cca3b8e79c","feb0254887eb1282778baf7c368a0b78d207e266f585e8fa28d1d23f1aa1f260","96c364e4fa4c79e3af24942939468d2bc4e25e66deb751a5352efb996b7fef36","c0ca68b26f34d8d7dffa9679f414d4de82a713164fc00678d7df4e235b1b6509"]
Anchored: 2026-08-26
Public log entry: search.sigstore.dev, log index 2594047033 · entry 108e9186e8c5677af479…
Expected log hash: 26ef5711a6b9de6fa8d880c18fe60f9d9918e495d6ecb3bfd46317eb69c9ba91 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":"v1787712098188","kind":"published-quote","locale":"en","page":"product:proton/proton-calendar/en","quote":"plus security and privacy","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 (bdc4b63265a7…), 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.