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.

“es gibt dutzende die den selben service kostenlos anbieten”
Google Play · 1/5 · 2026-09-14

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 3258490685

Proof data

Record hash (SHA-256): 2292ea08fa482a4b59164c8be102122006b1c5bf257f62f1ea9cb10eb3d3aa6c
Signature (Ed25519, base64): o7TKkTEZBUSMpG+1wp8x7j3VCYJyTohgrr67jgmFPY90Efouy3KkrMslAIB5ROUFu32Q/OLQFFfUd6H0WBnUCg==
Merkle root: 2824dde473714ae3dd30e88823a625346b1b80d9a55db059d813071b78952b5e
Merkle path: ["2298ee79c0bb26f46fbd27803cb4dc22b2d1e737b851b04c5fb8fb5cf0b0be5e","5d065cfeb393337056cee8a17df27cc740e528d3e662a32e46bd319bb8624f19","dba833e28c283dc363d9d8f683c6fcb34212499ca0b4e399a643593ff9a0422e","0a3e9daa3e6587b0f513197798c455ffac0b4e358c781c1dca849bb00603fdeb","3fc577b30df1a972da715d4f0a54989224c442923d562a2e77c996d518ceca7e","7af1b03668e0708566a3acfeb03d2ad81c8c94bf6ff68a0b5c6dc3fa9ae2faf9","5baa767bd18f383787069b2529bb4ea9428f44db935e242e3f142f8599d502d2","551fcbafd85cfd87fdbe2ce5dffd720158eb48806f4b0bf8f8364c59fd585aff","2a6bf1c4be72d0659b14f4e801d6d4df2c0ad05be615a924e07258567127c3ee","306155494d6c4857fb6c918dafcf05d8933cb3332f91854d3ebfca6b9bb3663a","716952c4b3f4d5eaac217f109209b5193e771e846b39200d2f4f443482f463a3","d6bbb08f9fb75532ce4c76d4d84bb93a214afb09f8a4465fc6b0ac552770a707","592828a30de1f38ebd3532fd0b7bb1288bdbe2c152bea05374fc6e7c174f1dc0","c0fc8298b38da3131f46ba94c60b50a7d3f5bfa16abd1c4c451dec4dd9f28f96"]
Anchored: 2026-10-15
Public log entry: search.sigstore.dev, log index 3258490685 · entry 108e9186e8c5677a9f14…
Expected log hash: adabd3d63ce5c0d8fcac6f6311f5b010ca6003db409229d5e92687bb33c3624f 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":"v1792032587528","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"es gibt dutzende die den selben service kostenlos anbieten","rating":1,"review_date":"2026-09-14","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (2824dde47371…), 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.