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.

“the Proton team is proactive in listening to users”
Google Play · 4/5 · 2026-08-04

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 2657725656

Proof data

Record hash (SHA-256): 135758d1032a8ff63ed8e44b9bb748967585e2e4515060411facf6bf73a9c5cc
Signature (Ed25519, base64): Qyj7ReVesjX79canxrSLsjWEpOrLhMFN5i9Xto6LlIdfczLIEbPPU5xr4XmK/PSNc8K4XcRZ5wkrLIC+AeRxAg==
Merkle root: d019a962265fd99700bb41421c12bf721bc431ce9725f4e9d547011775ab56ec
Merkle path: ["13572cdfa607a244cfab33b9ae5c8496ce8e157286f6010d82b0af8eb47cd951","6e83dce50161ab75a9e91149471bb99785c985baf724d83db7087b3fa40ee71e","11488e8f1d5dbc4cdf5406ada86e731e0768ce3bff8b418063f76f576dcd1a72","5bc09559896a8e5719faa4dffb62d2da04383a5de3b616e7c0a5f0d71d86cc41","4aa1bfc3ae9fb15acf5dcaafa9f9bf8fecaf18f800dd550949c4fd7147dba4b0","485b7b4abd4fa6e4dd57ac4dcfdde2f45cf6ad2d04d666246892aa8ed8ac2c62","2341bc441d124778a185e8518dc050b853260bf9054b48c4c9dfa265f2a469c8","3215a5e116ef2bba82f3891335de673a622afc80421ef010064b0a5eed8400ad","44d20d5e85ebb83f709d92342dea927c899490c45417b912169b871ceb8a611c","eeee2539bfe30da67dd0b538d662f5ca72f792381f506f5d4a42398ead555cfb","f410755dd9ebf3ef5d42be582ae6cac2b4e9add953f3a80842eedfd245932509","a3af7151d6a244480abe5bc8ada397c9af55b3431df57672865c450809772fd0","8d7f9bb84a33c413af9063341c8f5160bc8725a67ef59bd2d044580fb9f3155b","65b176b4a433b701cea4a24b83deb2fa9ed09be9f26f9fdaada87e8434a57f00","a28f44db157d986c9333d9e3edce8ce71060ce7f7d8f4bff70f57fc26d48546f"]
Anchored: 2026-08-31
Public log entry: search.sigstore.dev, log index 2657725656 · entry 108e9186e8c5677adf65…
Expected log hash: b4666dc064e94c6d0ca3a2e9a0c5f9ff5cb70ce3ce9e0a74343a10c712c15a62 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":"v1788147462663","kind":"published-quote","locale":"en","page":"theme:proton/communication/en","quote":"the Proton team is proactive in listening to users","rating":4,"review_date":"2026-08-04","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 (d019a962265f…), 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.