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.

“Excellent service”
Google Play · 5/5 · 2026-07-28

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 2683647879

Proof data

Record hash (SHA-256): 086df63f1731a9e9ac6f00eeffcf3896bacb846a36c02381812ad01cb454bc18
Signature (Ed25519, base64): U7bUM5dloA+KDyS8nz4b5lStEo31gRG9kwsIA91V9J/ZFnqNXs43tFZNft1yUMnOO7k1xcQPFAw+QvS/PnRRAQ==
Merkle root: 2e3d871c1322192f29eecddde09b1d60f3198d79e780fa1195a664b4bd06a864
Merkle path: ["086d7791d19519aeccf15a2ab4921e43bba6dfa96f7971f157ad1f4cec4423e0","c285a977ec580c26d87bd6d792c9ff52a0ac5a3e8466c9945b89f9b30206da2d","d21234ba2aa8a9c7824a9cf60ec95eb548e45069c4c47462690ac967645c88ae","55ad69a8805ba16edc1d4d09ce8ff9584007d9bba0058a825f82caf9b428c197","a9c8f249074cb1a19e6a89bd274b77170eae5b550fdeab2b93260a9ebb44afe2","e8332bba3718daff3a22fdac8047efc28d668b36a73bc7ae269902d29968238c","c77c0133231d06f7da6f1c09812ce7c33b5c9c5e91ad0cf36d6393a6603ad2c0","03421c844270948cdaf018f360d7257dcce2fb2168ca5962b1b5a4317ad935c0","194ab3917adac3a4c5d8a48a737b023536082027abced95afdab9728bc68cbda","69809b58deb29acb3bfa81cbefe20114934a9eaab74bdbbb0c33a37543b819a7","8de13ce033734032633729738c3f45000a50d2fbb1cb6a3cf8b071323d95c8d0","0a3d33fc893d1918590ed750d53fc85f13e25e4f6ff7a207d21b4e073de50d53","2d5b9611d8c1e5387c2a259b0d33678f993a76db53de4243f9d133a0209868ec","628ede9e9b0730d1cc332c261be38ff7c8dd0481f36e9cb85c838852e27c80d4","8951511b8bccb72998a9f731e365024a5c886ecac866e59c397ec696591e8130"]
Anchored: 2026-09-02
Public log entry: search.sigstore.dev, log index 2683647879 · entry 108e9186e8c5677a3d9c…
Expected log hash: 9b4e6e5ed792dc8e5468e146cdb00002a33cda5d0fe16d325e3fdc5cc54bfd3d 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":"v1788327458165","kind":"published-quote","locale":"fr","page":"product:proton/proton-drive/fr","quote":"Excellent service","rating":5,"review_date":"2026-07-28","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.drive","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 (2e3d871c1322…), 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.