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 2524810465

Proof data

Record hash (SHA-256): 2da0d21becf6febffbc54bde36163fcf25cb354295afd436e204371c7384c0d6
Signature (Ed25519, base64): iuBBkvn/GhTn0ASk4iQbBN24v2sY3jfAuITMB83VTsLMhkQqsYP8LoZWjhcg145zNr6nVXMM1LJCIaZXn4hFBQ==
Merkle root: 3e1c67438f658ba7fd015e6979c1bfd82d90efb0848cecbd4d902d6b2ed171d3
Merkle path: ["2d9f877191f81e943b61944bd7033c25000f6fb24d5f210ddf7e341311d3d675","c2bce3303645ccc16653f36dbf4fe15e93caf1f6b5b47da31e06c5ae672b69df","d95f49333da71269d7289cf071a9af788c29e51f27dff9372eb7e2c6ea9ec5e1","6aadb894ddb0ac03f1a95bb53fd924d0869d051f1173ab2979ccb812824e4cfd","416c609cd230e21218c0ae57795c21a7a134691427e3e7452b535640b868a501","4da15e394003944e0f9f1051ad41154b461f3702f14699e5460083cba622ce5f","d499dbe42d4b1d22c0ee888fe5c493a74fe5b77406736076d52c58c6abc2fc0e","fd4b2e911c8923e943d3e394174282443849c038ff3c93ad493bfff9825dd481","2eb5d4b6800580c89b4dc7542b0fbd0c496ea23ae21348a69535d6aa3d5a1720","854c0d4f14601d9b0657bde1bd4bf6af0077b1b29d37a74a2c3029de84d543eb","18cfb55f975815f990cbdc4419b39463e6403b7ccc2d68765c89e0b47cf2daa5","ce333c93e3984da7f16c5ed3f2f448c49b90d782d063bee66c0799caeeb52526","fb183b6f6365289d9e03a04ab6a5ee3d62de93cb7a6ce2bfeccdcb2ed00acf48","0790a9ec23117ba3e0ba9a310290906a4f1d2b0055d4607b106ab21651087c1d","db72b82118c1e08b77018004fa72584377d6eccdc4c75ec19bef6a78273f75c9"]
Anchored: 2026-08-20
Public log entry: search.sigstore.dev, log index 2524810465 · entry 108e9186e8c5677af074…
Expected log hash: 129b219cb6155ac24569a579c61e8fc9cc2d89305732944b8849d5e719dfd073 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":"v1787193927339","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 (3e1c67438f65…), 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.