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.

“My answers are marked wrong too often.”

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)

7cf9d955e40954bd45850c3d40e245ca18a60ba20752e657b1e39c9ba745d2b7

Signature (Ed25519, base64)

U1MA99Vbo0b3Ek/IiG9qe2wvbZaTfLV+IhcLmVXF+RY7Yqoy/wb5T2rQqNxFh7LgG/5I1gYdcoSxgMrDhxaCAw==

Merkle root

eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6

Merkle path

["7cf84eaf0d2ff4e934ab3a9d24c6aaf02a46569f9223ff66843e957569b0c384","8a4889e4cefdaaca712bb4709e47a88b0cd59c2243f9dbeeaf3e1ffe00d5480f","4aeae52491bdc78b9e42b942a46bcff3d1f4099231e724c7de0897a3d47295fb","38a2897fc5200e4f5a6c927687d0c683096c6b55ae517e1d6156adb30d20b3e0","9398dce430fc23499fa8e019944d0d890e8790b5be6b778d2a0b67bff842153c","b5ce4b4c25fa0e6c4edd8e398920a801a2070ebab32587ecb5ae63f782301564","f7ba25e99bc96aa33c690c87da803c51a3a0d9f40ddc911a451309b90843c28d","902302d3f4370ce2f6689e147232014e435acb70a0aa616dd2fe5d4791a8335a","b2ae88cac78fe4a21ded39400884599cce895b93a3aa4ace22987b239cc0e59a","93ce340dd2d34fcd63a81382c8cb0b49afce0cad8511e3df3630cadbc91643a4","766f46b5f3d52aff6fbda02ee48385a24cd8332cf408c1bc11038124cdb3fc04","5b1894dfcb750cb74de963040bda8c5d7aae8b006db7bf1f2400cd4c8a13bad1","2a2a0e0a04556444a1f3e56af70f8f7d735501b2d557278ab2ea5948d291f4ab","a445a39a48770a8fbc5d87a405ed660d401fa810eac6fbd1d284a96f8c7d5503","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":"en","page":"brand:vaia","quote":"My answers are marked wrong too often.","rating":3,"review_date":"2026-09-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. 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.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.