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.

“der Button zum eigene Sachen hochladen nicht funktional”

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)

3e1ab0c5a9fed5ed2f718d04558e824c7f7e4cd5052416687cbe4204c416dca1

Signature (Ed25519, base64)

87PzHF3PKhQRdROg8rrd30OT2Xb6PkvORglOMXR0r8kDDmBw8L3q0aeHHA2cAPspN/cNvEhPKkbX0T52lgagAA==

Merkle root

eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6

Merkle path

["3e0d73f274b8f54a7c63854f707667dbd0180eaf8b8f921276a20ce1970aa47e","47f90dc7a1a3833de871adb0f4bac46954258585323684df4b937f432b578dc8","3c27d33dcb6b66630e3ecb73c34ed30003cf43b827e1ae0d301699c30fa3623b","2799b5646143fc4428355e3df8001af08ab91af919bc154531d544a43e7ea230","1ee514cf81bec1daf4b28ce65676c96a07af70d6895f33fa2dee4d021d67c72d","ab439021962c86c3847df637e1af0c225b259064c3095e24c65ad19494734489","af8b1c09c5ed4506722fa84069ab6859c227527b1049d0ae1d93efbbb5fad2da","97e96b834c3039d9e1ced12b1424decf10d810d93c6c10af35186a113ce30fe8","1564b141b801b9870d6920e3772941a1613d1bdda3c5b86b0d6760b7e1e9fe73","59457fe5dbae81aa71a4a7f65dc6c96b534e0f52c3d0040d35add6206b4cc62d","e22e78fdddc7eeb3f60668ef62b942f372cc72aee0642245e1b1d727cf368318","5a28204f9372278679ccf6b3ebe28cb3da342cbf292d2015dc590fde73763288","2671ebca141255a0c11a3bc51354d8cd008634f7e59a58a3f3f9dc756141bb9c","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":"de","page":"brand:vaia","quote":"der Button zum eigene Sachen hochladen nicht funktional","rating":1,"review_date":"2026-07-30","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.