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.

“Why is a simple feature a paid option?”

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 3258717636

Proof data

Record hash (SHA-256)

1c8e8f9ad56a2fe8c49d071e2436d19ccf858b70408c03b039e98a1fca766862

Signature (Ed25519, base64)

xZuidr+V1QjQfEsJ6kIjk+R5Xy5iuKBAH+gPRrmLzaEk0adJ0goiR2Bg5KjKWtaRtiLQ1RHNdqlu/57+kzn5AQ==

Merkle root

c1d49fab62e94ee1796f3eb15e1a21f856756e9a68ad117a17ae6c9694ffe1e9

Merkle path

["1c8b3d35fe99f1cea9d7f35ea22ac4dae1760bfe9e36112989629116b10fc06e","2db2bbbabe7de70662942bc025c6c95f054eb6d28fbd96e27aa80df83a7aa917","a5f15b5e9e472d14e1bfe284afceb766ea3a51eb2728b1606ce46de4b0b91120","7211dc2000a142c5edbe36af38091c860ca39ca8d5d73c9996e6777f5154378d","18942865fc62dda52e9cb2bde34aa29d72cef81cfda31f2d68177329f0ceafef","905888ad89b6fbcd33052836f42636f05bc6c68175729f0daa89c71fdc910498","c14a5246d0f6945b1eb656095188f00a3cf8c512eeffd4b81b1e52462954a184","7dedd25482ed1ffaaf56fc37d176ec971b613981beda011fdc1055ba445543fb","eb9784a5d7aa7ff35c03919a2f11331de2cff7a37b4b32caec7116b89fd62ea3","ff25a65eca2b7ec4f4d9a166775f2c868b6fffadc9f1f205a339db799fc3747a","d548028ef9025b3c22d524c1f1d85be654856c3ed276e6e4b719f445ffebfe9d","219bd599cfb89fbe7096defae6a66c994562ac0a422a5db43368bd9cf9789683","856d9a6a3e94d695a98fa0bb5ce8d80e9fc70a3794652b53ea754ef3c0720b7a","436050ea3288f64644ca44d910bc166b737265d33885dda72495c78f7429279a"]

Anchored

2026-10-15

Public log entry

search.sigstore.dev, log index 3258717636 · entry 108e9186e8c5677abf47…

Expected log hash

30640a6c2a3bbbd5aa6e5244e634da7339a6d42d7209b3c3a5dde0fcd662474c 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":"v1792034121129","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"Why is a simple feature a paid option?","rating":1,"review_date":"2026-07-31","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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 (c1d49fab62e9…), 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.