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.

“Highly recommended for students”

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 2514297706

Proof data

Record hash (SHA-256)

5d709018746098a9b6d3abde287e6bc8a79c3d8c6363dc3f75987dc7f4ed48fd

Signature (Ed25519, base64)

R3UJ43n85Q3nSOflEAqbYIRwspd3c7vTUetq/llPPtBKUJkYXW2WcXBfs1c4j1aXhJLjRq3vBFeuczQ6dpuPAw==

Merkle root

1dd7fec10002d9304505761bfad9c0f048c94d1d6a0775b6fc4291f712d4106b

Merkle path

["5d708cd121d8c9aa0911d14bd5fe1c4b62b40c31a32db383440b1ac67219b3dd","84154d4998bc2b13583d37572078dd333e5e41916b08c6d58202bb06a3826819","ae1490c782764f6b066327fa6310dcd3f5d1a456536d6e85dad9d3b64a9c801c","45ce383270036bd263f549ef2cfa25113ed6e41903b98c4bba6cca646f4e0044","146b832e66e4661272ecb30cd3da0136a0b6dce8f9f12c132bcb580fa2ba5747","24008415594168fef5f5aca75ac0a5f59f9ede064c474e53ded701d251b979b9","a8d5e3eb7c7c69b39a23bfccd2374dea1d567d57495d0be1874cde4331d428ac","335fd6bc087426e5a910defb39676df3a54ebe24214521f97ad444704b341b4d","48a9886deeec982ec8dd443ea4e0e560661012c4429ad475d4566337be0ea38f","febb974dddf5eff9cf4be7c477ea05bef113be901c02e8ffdb905aecafeb32d8","2a9edb36f0eca0a34aad7d9238d48e633afd211bad8e84acc0eb32cc2fd17203","f6b2fb76d94ba09b30b043e51931dfd4ca4692e18020d8bdfdafe27e87c0cde6","b7aec9f3c94c31d180edcce99e1c822102bdcebd141a0695527f2567ce2d6e06","96733967bd879589a2091176049a40f13c26bf93f656924a17f15f3f405bad21","54bbc2d7930ffae8e416e662d825fe408002ca5c9c581c2388ff0eb5a37134ae"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514297706 · entry 108e9186e8c5677ab801…

Expected log hash

861cb9c1424d2f408888a591a8305206c340f8249f4a4581b32f940ce8815405 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":"v1787126020727","kind":"published-quote","locale":"en","page":"theme:xodo/quality/en","quote":"Highly recommended for students","rating":5,"review_date":"2026-07-25","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 (1dd7fec10002…), 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.