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.

“best app for editing of pdf”

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)

3063797518d3f3066a0aeb0e5e9ed1786b7103db3189b3d59370d448b6e846db

Signature (Ed25519, base64)

oBLOjI5o25JscP29jTzvKOQxhjzk5ZKWRd3NrkQmQfHQjwFREKrEQGPPof3uSd6trZTV8d65hqrA6XAKZDotAA==

Merkle root

52d6be1abed15ebd0724a0e1a493d5805e1ea49ddcaf8e9e5584928cd3e4d759

Merkle path

["3066d8e5b17ed4ec9915aed2f50a5a6de298de2093ed3b940763d988d639beb8","48dc93fbc17ce222971f41f39c0d5faa5fb2462019d211321537491318484d4f","676d94f908f95fccaf1e6c222928db09b055abd83b68c0cae0ed029825c1a23a","1689702dc7f3454149e3c8edff6ed96b9c4fc7597952e6d7bbeb9d5b6345b632","b128846b80dc83430c9c0747cda033c1e16effcc8dca74cf29e176d8f4f0a456","0cebde2f5fb4f4c259108aec6b8db76104a2c742080561ec6e43e03ca536e580","d845ff48dae388c21557862c8b27cbd1a44a26a2c1c032082267c8ec8fcbf2cc","7c05ce7af3092fcdb9f5046ba2aa4dd8fec8efab6ad302b7c5e968dd6092c04e","c88b7c40e3c38c716fcb04460a8c09222690938cfdc256d27a1d322885897bd1","e8a8f905632aab3372697e367e446467254455045a5fa7f0c18a2042a47f674e","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":"best app for editing of pdf","rating":5,"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 (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.