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.

“Ich liebe diese App!”
Google Play · 5/5 · 2026-08-18

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 3239939960

Proof data

Record hash (SHA-256): 465de79687cd100f571200035821d000264a537ea6ff52bff869a9e688a7c4ad
Signature (Ed25519, base64): jl5Fg3XCnzqv1EIfJhnnZOpgRJtwktqLzxORp4JjicH5IyhiYtPqsnEXRgWkZ6+qKO9WlHF7g+fG0UV8X9TEAg==
Merkle root: 954962254ff2eae9503796c02bd08deefa3a5722e4ac0b3981007e2b9ddd84c7
Merkle path: ["466c5fc2c14c22daf1d1654670fdbb31900004bd41ac9d5007b1b772a8ed0592","68e8751612ab86afbe3378397956d4b0613110057138bf5f983b90cad7351ea9","45f50ccfb4dc26f59348671fd02e119585d54fb8955b787286d1c39198938078","8bf9505aa523426a360da1b84210df747d3d98e6447dc455bc0dd0f7240000b1","c9018ba913af83ff0734e3d588ef22c6c97d10b585951398f074d0f191db72c7","053c31b1b79fe07333dd80aab50c71909967bf04d8b999f070da94f9d692a1c3","b40bbe242d166face5149060904518d9763efeb6ca8e4b46120aeba2040fc13f","50863177dc11b08cf05be108db731f9a441e4fe77675641d33a088e773819045","ee5e6ac96ad9156b32001aa6056e4e6b9b7445d5cc97d4b5b533aac4fe16906c","07c9c3ff2ad40a6a51b748f8a25173ba55a6aaf65a30e7972068693d1b77c76e","780157e889b8acc868bdc5fbd2b9f6d948cec0f255310afe76e4ec4bfc3a114a","37d889bdc912bd16145284899ed1544c934e2d5178cc362b2ba799bdeaadde22","07b2ba787804bc9fbb84c73bed76b7f65ff1b8c1694261a8264cf5f3209f315a","e7bbbee54f729cc449b73bfdd383c96b7b180e618c270037b5697f1fcc75f254"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3239939960 · entry 108e9186e8c5677a0082…
Expected log hash: 28fd9464b857a07e61931e67235e692cb8af33d7541a60ca163756a54a64e9c2 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":"v1791859824762","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"Ich liebe diese App!","rating":5,"review_date":"2026-08-18","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 (954962254ff2…), 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.