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.

“I cannot change information already entered in individual categories”

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 2890214870

Proof data

Record hash (SHA-256)

6f9fb94d8233dd6c7dfa13544b8eedc45a2d474a98a81fe134f73a3b9b03644f

Signature (Ed25519, base64)

qrLxME/YkcWA8PgbyDIeWmk9Iwza7/C4VMqh10QvQCI5K3bsL0sp6Tfm9zqvQpjN80gPqQR9wG0/nYJ42OiHBg==

Merkle root

04b39eaa56e1cf8f75dc8eac18bf6942167c8418ea731a7471223f0be60e3e6c

Merkle path

["6f9ce39d6a14e43b8708b3bd13ac8d055f2934e8c37fad7c5815c5d45975f8d6","89cdf55ee56d0b783d223187711f4877f807baf9d7a8034456d18e31df37a6f3","299d331096f94826edc96d0288d53f5367cf3926dca150a7cf819a9ff732a223","722f287956099a1b1e8bbd2d975d824400ff0ddf5f158e6628c9618e4c3a1af3","772653f2377fccc59517e49ad5cad883d5b400bb714aa81a4f7c6d972ecd78e3","52fa60d00e3ba9a527c9adf962aeb33c9497968561d6b5f0e9d64a8f99675772","4bc711a95dcdf5fabfc04e8a695a3acdbdadd430bc3da4810449399af2c68d64","8f0d26b1857a90d8adf707792cc5652613e149085b5f109b622f54875d8106ff","888be1ecbaf67a2755bbbb21549f31936a3c3f4f1a1ef63d9150db6a9881d857","81097117c01983646b9aa4ee57c37b4aca3db8131ca1d31c8511b36f8c12d024","63f592014b2c4a9786dff95d46ae7ef0449b6789916b2a8089b5b54cc418ec38","d1b808c246331cf9fee16cac2b6a958f43763c14ead7b37f7be7d0d036915e1d","858da9c5e5c810f227c1c3047d0873181b65380781d4a4eb884968faf30fbb8e","c5cc7ab668acd70733708092004f0624164aaac2bfd55cacefad6637b26146b8","695aed3f647000e14ed985f8c4d6045987ffb913dd12c814d6f9a495d4d25fd3"]

Anchored

2026-09-19

Public log entry

search.sigstore.dev, log index 2890214870 · entry 108e9186e8c5677af53b…

Expected log hash

1f3acef0f063246e051bf412e40f4279cb96ed334ff7b0647a13320c1b31c4fa 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":"v1789722569406","kind":"published-quote","locale":"en","page":"theme:taxfix/ordering/en","quote":"I cannot change information already entered in individual categories","rating":1,"review_date":"2026-07-19","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 (04b39eaa56e1…), 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.