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 hilft dabei, sich in kurzer Zeit auf Prüfungen vorzubereiten.”
Google Play · 5/5 · 2026-07-14

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 3178600936

Proof data

Record hash (SHA-256): a44b7eecaadcbf94747087903ca98f1bf0391eca36e1b9c305a6c225f1e0f864
Signature (Ed25519, base64): v+x0Mz+Te2gQ4n1nJwAMbyHk3zzt0BE5NlLnXg9BlGlbzr9SwpisLKAg2hzjgkT09SER23/6uzYTMIhg+f3kAA==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["a4562bad26cd7141ad6d7982307cca053fd54ef7dfda1894e1d9e0d38cf71c4a","14cd33ec26353c36a824c268a6e1f4ec6bdb112c5498efc3f85dfb6e2ae301f1","572f75b99d1918b46bc8d7da75643d89bad2cc6fb2572dab6985ed472c9ea7a1","537f7b74b387b92dba97dcc4c203a593f7a6fb50c597436d9898518654fba28c","9e22a52196c816329de4c81018fe6f10571292d1cc0d6543e09c8f2d5af9c2db","4153b66de492d7f0412e7ef5bdf6ea3859fa2ec450ce64b04f1447877de0bdc7","0859db8eec1a8714e342847113abd1170efb3e04231a75ad46512236c5233613","2706b083b38177e2efa8fd2ad0d0b2577cbb1ac21810a2b10d9148b5886f9a63","958374dfe30b1bdc66919c7c918b34ca509efa28f2c55282383fd367aa73bd1f","c913f73b75a3ab6843eab8623778a1d626a7dc439534ad5690d4bb871bd95e42","ff2b48a0e4499fba2f0e6147454654d31d5b9b7e7c59f047300283773bbd3f09","a881ef2a70af757470d8c26ade26209d4a9c636254361ebaffcdf8173cc1209b","7461bc2d06b1d6bef7145de580cb46d87ddc9fa66e098a96698a96372c033f50","f5776b4aea049b369136550a2eba5c5f94aeaa8e5ccb2b2ad336fc6ccf74ea7d","452f4fcbca19997a15e6a6869c50e026ff02cb90a6ef21da106ee0457e55941a"]
Anchored: 2026-10-10
Public log entry: search.sigstore.dev, log index 3178600936 · entry 108e9186e8c5677a6a91…
Expected log hash: f3dccf508afcb5e89d56dabc8c5aead85de215b1b896d057d463ea1c1bdb13a3 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":"v1791606586319","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"Es hilft dabei, sich in kurzer Zeit auf Prüfungen vorzubereiten.","rating":5,"review_date":"2026-07-14","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 (eee462924587…), 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.