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.

“jeden Cent wert”
Google Play · 5/5 · 2026-10-04

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): 8878aef2ae2fbc5e72decccea340e2cb80b40ebb3c6d4c0d93a00d677a54883d
Signature (Ed25519, base64): 4S0KYIOJNuGeSKSk8H7BaCfcHETSi4RxvaTO2Ose5y3KdvwakCrjKuykNPjGiQrGg/7GQ2K5dzXAGGNC0oIxBw==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["8876bb3a6be26356629a9a32bf9bdd408787436f10be5fd112b91413deb9f377","4ad2bfab2598aee2a1a94beab50128da70da21f688b55e443fea6512d63b703c","b0a00bf3cd7f4cc64ad867e1561c2576c6aceb36657a4bfb3cff8c409bfe1e0f","8077a07202f69ce85a789046e44f6bf6bccbf8db411dcf25b39b4eba7405b289","d9effa4ff375aafe95a0da7ec7ad8a45ac78b42fcfb96659b5d654679fb88248","21dd7ba246550d22980447d2bcb99a51eb3e7f61b4da54a97261da5f41b773a1","7fb1724ebd684536e31bf2af9c560d75991e8c82385b56bec4259689e906ff80","e14aec4e7a4addedb480b104d107183b743aaa36016326e66abc6ccb40f77220","b98f349fe850b865685e89ea639bfc0ead1bdef948e840f6e4055e514b5531be","0328329a9708c723d7e209e3584049c47e85fdf618b3b9f79a590b399c2e037b","6f393bec751d776b1383d4a3edd07bc7a9da0957dba8eaeddda73e24e272d993","03109236374994d37cb03d835f824eb739eb2a726edd95454da9d25cea9f6c11","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":"jeden Cent wert","rating":5,"review_date":"2026-10-04","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.