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.

“They did a good job on filing for my tax return”

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 3248278454

Proof data

Record hash (SHA-256)

5151a94b2db0f24b86dc4924d86b2cd7d1f0e7f4e079cce4d0589e2114aa8c39

Signature (Ed25519, base64)

6Z0z9CgnDoMih8FvoPxh5wBYb6r5TI2Zf+4gdMY6z/G7Htprl7qWpiMuGjLyMEJe/O6WJpkqEV3/shL/L+FlAA==

Merkle root

81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451

Merkle path

["51520bbd07e969d9bcbc3b8b7c9277745314b25653a8c839a1a7017076ce9848","e2225a455fdcb95866d6dd985228f76d8e121ab8046aee7920a50c5dc94202a5","9e953019997fa0501ec241a1bb0790ca2bc0311abad79922412e5da6a144d66b","397d49f317982940cddaad84771af10b0e5000454e61c30b5af6c2a41ae97fa5","4220aa93978a69b9604ac35c3ca1fa0fa39bc3e15c6c5cd5247f5c2c2fb8e321","9490c87d035d0ddf55ba244ddc12d976fe25d7dcf1fdbaeb2858ea39da22394f","bdd8c2072aeebb1b0e45ad38c60baf223b39cc6233964e5a1c48ca959c62810d","679cd0a0da3fc39ab0041b550ec876bec62cf7154226dd6cbc8ea040e6f5b752","9d71ccc9f8de1f41728ad4b017f7851502fb924daf53cefd51a9b74b7002ed62","fa6ccde5491dafb2ff778b45d3e8a09145a1c3f73ea1c2557d62b83aeea5355c","cfd5cd803ada667f9ca2715e10233c8921b1a46fc863f814c429b8b24bca26b5","3fdfbce5ad21b885f11747a0e764cb6dc9b91f78a8b6101f3123635e0a22e27e","4fd1b36929337d346b3723be273df6d7588bc7b080f058260d538b3f309857bd","6fa310e475466f0115dd6b7ba199f23e915f2a513e2610274356ac5bd367e940"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3248278454 · entry 108e9186e8c5677af67c…

Expected log hash

4dfbbd25ce402c4821f7e2d50b18e091e9a30465f45669967c545fb71910f358 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":"v1791948368672","kind":"published-quote","locale":"en","page":"brand:zasta","quote":"They did a good job on filing for my tax return","rating":5,"review_date":"2026-09-26","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","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 (81db1abd6b6e…), 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.