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.

“very useful app”

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 3140838741

Proof data

Record hash (SHA-256)

261febfddd8bdc1bc55bb6f6049968e19e94383cad8b2002aa95567501319bdc

Signature (Ed25519, base64)

+Gsq2JGUlgRATTK1ncvx4d+2zU3OW2aoksgqQ725k6eyN33SFpfVA/02r3oL/7XlRiLKMi4r+/90Ji0jsSpeAw==

Merkle root

68ee5f8618d9ce1aa33f2cb5b6f3145b5f909a3c35a03ccc3d10e979b2f81082

Merkle path

["26232b63ed3444a9fb5bd2e230f814ebcfacdced7852840b5de2f7bed3b2675a","1a4d5e11d0ad9abdfbd12c258dd2b427dedd710b5c997ff817aa939693d41252","047c7cd861ad6470385df47c2ad162ddc1a84a8103595c89a4f1680296edcbaa","b1a24484c31cbf40f2e4248392d2c463d5ea7fb428b0e3b8df8c5d4a924dfe9f","4a7bbb863f5214ce6f6a3e7034ef953baf65d3246d766caec4dece78cd7e2717","15e84faa0f1b9c6bd4975a324e87b994a727bd4865fdd0576f3e25084eeff754","e5481a6b5b85b44cbf85605cdab2ae816a35c40f0eabefe100e38fda070cdc93","279b434dd84f34ae6cac7a9f3eb90ee170a74b716b16c486e3f5e4a5d78f9b18","2eaaca373654911a7faa66860023af1759ee9edfa357ec40a566c0ed2e868a03","ea501f3a4b4b66fc34c5f2cb420fa9c04d40c94295bde51ef913ac264665f9ef","7a9ac5da1868020537cd825d30bfa9ce8fa9a8e1a7d03df4b862714fe4f5f985","c0b0e5d80d4c20548f54f9b2ba03e64a0ebf2086ab62be23101b4e2701c5cf78","e6960377f92ebdc1b41fb37d3ed0decff1e5fba5b62ad653e7be0f8408d1c6c3","e66299710f80b56c392136748910ac59d79a991f3e479ea8a96c5c23e200aa78","418554fa0ebde54d6cdcc03145c7126505ed96d3734e8e7ae56dc0dfd8ca0a2e"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3140838741 · entry 108e9186e8c5677a4791…

Expected log hash

ca4949400cf2d29b49789563ea2e672fc73762380548d6fd65398e40c0d98728 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":"v1791433229105","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"very useful app","rating":5,"review_date":"2026-02-11","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 (68ee5f8618d9…), 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.