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.

“it explains what you don't understand”

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)

e80100c9bd001eaca9cfc00eeb3dc8a7e73199f87368bc75ae7f30d223e0b7cd

Signature (Ed25519, base64)

hDi08vwN1RbhADzG7LNV76hWyyinaascFGC9kqPDgzpf230p8Nc++9lY+cjmHBlho/oXSqqMP7yKmQET5vw1Dw==

Merkle root

eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6

Merkle path

["e809e09a74d212bef056150354446bf541af9ebc0e7fbe883b679b01f8ae62e5","c07b8c85741af7140721d08883ac28e4a20bfcc049781ac5113c77383e078f0e","a662f19e3a7dd4c07c851d8a4d71fa7b44dff01b4516e1aa779180d47e3f25fd","bb83fd7d3318b8c0bc2b6369479b8d940d2f6d41314a69f4a6956daaaeeee839","e89aabe7b657ea5a4970b237e585c0e966f94542a44ee904c021c5a7792b75c7","23abaec130a2f5d9a75b2728d9b44587b78e5eb77d6c3962a0fbe6c85676512c","825877a3e17eb93674155a2385ce79c3629cf873a1724774a7a3aecd856100a2","cacb87b076729f1854b42ad073fb885081922032cf2731022a82f4c23c2ed47f","f055287dc8f525aefa7768a53aa5babc7f3b1fd5085fef97941f3ef7c7544d5f","6af27d0d198cd14ed7248a1a9b8bd863749a9b76feae8a2e0d032735c725456a","d7872bfdc49fb8be29d7521762651344e744292c914d1c88eb1de4c030615b19","66c0144df3633ad66c2f179ebef927e19b0535a6e6b53bf383335be6325b032c","d7feb064a92044c8859079140f59232505ed2b3b8917786204b22dedaf037269","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":"en","page":"brand:vaia","quote":"it explains what you don't understand","rating":5,"review_date":"2026-09-16","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.