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.

“My tax return was not prepared correctly by you.”

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 2882354328

Proof data

Record hash (SHA-256)

d5ad7ac30da7a5461561987f7a43d4bd9a1f3f754c94d0312dee3451b6754d4f

Signature (Ed25519, base64)

9w7J64RAXFBIk3hInSB4w8ydDdqbmZQitXVXVY6p7G2s2u5Z4BeJtSzsICKsCkzi/CwbTtYNjYspHkpWtKXMAw==

Merkle root

a893faa173c6b378c8d050262e841ab57fdd89b71985eabc0906c40abd5b6a6c

Merkle path

["d5b0b99d923d93c85629869e3b612552f636d1326d79cdc4f4ddbb4638b495de","299b913857f4b04eaa4b6a12223a08e2ba10e156c8af14465bd368337657949f","8f0a6f48db48701f5269dfd6d780e9899294b403ed942d0741b82eea16b6fd77","3365dd8b0519b1c84199e3a02fd14585398f7aa74d9fa4cdd708fa166654ec54","f5b88aa5290cf6b16757776dfd6ca3e67064d153f97db00f16e020bc08192b14","a9be8a4ed54302cf30bc2e839373916416a768557a042f9c56e897ca90e877e0","2315357a5babb295d24107664f25dd2f886f43b9b33f63566ede6d4ea6743658","43d1713b15877807c7c7b90c2d08f9fd2651a6e45bb923fd7c27ff201dbba637","07342fbf1d29c7dceddeb382298b8dc4f565c4f91ec26103b311aa795ec54c87","eed28583676f64b92373c01631bf717f247ca302a021fb25b13b72a5056ca45c","c80b4a423599bfb56ba540a4255229ac70cad05626a90d6362ca9395d72c28a7","589714cd3af91c9cace4af17f27ce411ab407960f2c1eca87150a5acdeeaab70","e3dfd0ce13b4f18d9be466f664decf913e4c761baf693ad01a6280777721ad5e","96604383e0e3cd500d4560285508cbcc8eef5ad88e576fedea27dc38c3fc8ebd","142316fcc45d8fbb9a33df6e9be8f563650927c4e612ee96d4bcac9064ee60c4"]

Anchored

2026-09-18

Public log entry

search.sigstore.dev, log index 2882354328 · entry 108e9186e8c5677a08a7…

Expected log hash

5510a497abfe2e680a39c301b0d905c2a575bae0a1f389fbdd7b86babf05240f 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":"v1789619628558","kind":"published-quote","locale":"en","page":"theme:taxfix/quality/en","quote":"My tax return was not prepared correctly by you.","rating":1,"review_date":"2026-08-19","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.taxfix","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 (a893faa173c6…), 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.