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.

“signing and filling forms just worked (unlike all others)”

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 3140475820

Proof data

Record hash (SHA-256)

28fcd2a8c2183e79996d323ebfef9178fa966b8403b3f9ade25c36355065d1d5

Signature (Ed25519, base64)

kv4nhKJP5ns92b8cbt3c6WJ9U9pVQiLsqfKr9/9Kki/2QJqa9yWBRKPQvzqrelxUe4b8AmLug+7AriiwkKo6Cg==

Merkle root

52d6be1abed15ebd0724a0e1a493d5805e1ea49ddcaf8e9e5584928cd3e4d759

Merkle path

["28fc655c81bc99352dffc83fc63014fa4499063c4ef7a983febda15dbc098a46","9bb639db2a9b3753e28457146edd6cfd30931f1424cb4e440cc3c8a57c9ce597","1bac41bf256d29d213d280794455d86bdb51a2fcc6c98f4b8c369df545552fab","43cbd466e27d26c780b6ef7db2c2b38ee304a17d0ff8552607ed770b87340f8f","005f53fc207fa528ac1470df4402b1e16d343effed20f1155c5e7b5ea87d0a86","a14ddd2f4aca301a337262e3c422f3301185290ab7c0c7587a50f6c0cccffe67","69d343328ca431ea36c3bb09bc4d623687560a35da4f353bfcc10b986e7dab1b","003bed0ee0519a76ad25a5f1d5c230eef5f9267871e149ca94c8ea97d5b4e8d2","81d3eec112dfd344650cd1604e5a428fd123465a1a557863b3544089c488002c","42c012b6a54024b59cbb11adcfa2b4214495e1d26589217b78b309067056806b","2985d10cf8ad1992ad270c52182e3629f7c08f983a2418972e02d0c7813b8ee4","5b7aba07a854e6a63765c93fc2c2098355f0ab59d7b4659a94baac072cc8e639","7d5e1a3da5381843d312196fd4a9f69dbe86b152542df1be09d403d47d5e49c4","71d5ef7f970539b9a82546e0bdc1b1069245bf71351875f786a78e5550da4e15","b72fcc24171828b3fdfff6be65bb433d37b8e51a187739d27a216a784d84cf36"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3140475820 · entry 108e9186e8c5677a78c2…

Expected log hash

bb68bef30792bf00f645df162a48943f770bc3f026216a44dedb4651c8ac0917 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":"v1791431489246","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"signing and filling forms just worked (unlike all others)","rating":3,"review_date":"2026-07-23","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 (52d6be1abed1…), 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.