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.

“Which is completely pointless for learning theory and leads to dead ends.”

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 2904877428

Proof data

Record hash (SHA-256)

82be5ac779e280d223c83fd70ab1d2eb0d6bd9f14729ed11e8007a556b32ec37

Signature (Ed25519, base64)

zqeC0BLVNhpZsWd/VBZDcsAaVek0ptSShJYKysajTC+1Dpf9DgGqaRLrmyfPgIc8vT7uLDJ+A8KcaAqy7l7ABw==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["82bed70f2f768372ab1a2d6b8f0f0cf6135ef1debec1b32a69ec0cd7f455930f","cffa30c6cad0ad6c6eabc0daebacb8646e7410e92aac4ba25ffa17eeb58a9490","d1e9f2c18f4a89f516dc42b999e8b65382a5868b441d7febe4e8bbef128259fa","9949db67f13d060951b415ce419c10e5cefad932bb1062596b82af204c20fcf6","0120425ba5e4380fc2ac5c268b5851f4c4a36ffed3cffad9a0cc7058d70dbbb8","b5f730697df4f77f0ba4c7950e2a2ecc6996c11f8e2cff98dfe5568375f936f0","32c02fbc481c920eee55294f50ea80b1f71c08aae5e4952d269110252e7ab197","7e9c97b00659d0245a91f0c0121c8dcc4f3702b54651e91049a75bac819fbc81","7e8ba9cfd5c105a4cee16238480da744bdd0ef3b9895e72f1c4eb8e4aa4e4b94","79028bf7477d9ea959b24e1ce4c142e66d00df74ce2695f9c9c3f13167063f9a","709dc8ac2ae9c9d695d9b1a159880404b1d4e87468bb02df486856103d0e19f3","9c56efa7498f22733bd81d9e1a9aa96f7fa30f782f3e2c5dc658ff683f136fda","3fdd31064998e61048d534909957bf68a4f9bbe35571f6d185756d8acc2a5420","aa4bbeb87247c2797626ab02a549451da6dfce4dcb854a36fdcc601e3e788772","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]

Anchored

2026-09-21

Public log entry

search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…

Expected log hash

d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"en","page":"theme:vaia/quality/en","quote":"Which is completely pointless for learning theory and leads to dead ends.","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 (e299bf38720a…), 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.