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.

“somit hilfreich beim Lernen”
Google Play · 5/5 · 2026-09-08

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): a9103e1040b7b77d5fa5451622273c14b4364cb702dfe8800df369df4b443b90
Signature (Ed25519, base64): n1pgzVjpfll1KdhI+8fYFEqePEDQ4BRF9lYgq+0FlE7wH1tRz3CY7MDKXApu2TI0MG7y0BcTJ1D907QHXs9VBw==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["a91c37f5aa9e7149c4d89c430b541b2bcbd01c642602bc3bd6c911a4e02d5949","73c102b5b1615521e630cdd5c2b0b3b505eb805e09f2419bc72b45c1ebeb75d5","caf54917fc51b7723c3eb29df0ea22578f28839dfb69697daff115735c0f8f71","10054c4e92a409481d5db2c0dae854b3d946bca30eabcc3d484dbfdddf9e4584","2e602b7df2c2ec99cce59d92faf844bbf1770cf61f90251c2531de0b24237a5c","11eae1d2fa3c05b6f1033d7ef2d31633c9a6a2ec88199935279f2485f8171e82","cac43509eeb973fd2338322fa6bfe38ec97e6d0453cbe95d6aecf2d6108d3e4a","39fb9b46cb7ffa78902c1fbae584a1b14940c40a97b6f72990feb609fc797478","cf0820d093937f94d4a5ba72dd7fad3bd43ad957b5190484213b5f0296f1dcca","346ffcb571226f6a3c6314c4d3d37a9f3f7c854478edc9256b84e28ead38261a","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":"somit hilfreich beim Lernen","rating":5,"review_date":"2026-09-08","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.