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.

“Everything went quickly and without any problems.”

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 2948162176

Proof data

Record hash (SHA-256)

21da600f98aa14e6d128431a86854d791ca5e1992dc1280c12985e3d12d2c951

Signature (Ed25519, base64)

oGsVbqmatYSDv05Zi7KF/hKo5WESoSY30Ez28H4BnV78iyP8hGCR+52bWR9gttcVJSYOYg99ukgwP5ycBR7NCw==

Merkle root

5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd

Merkle path

["21db64f8aa706a11cb2b56ffce307e602dfda7efa7c030ec4960f894f0a5098f","57de68fe05be0ec64d645d359b3b392e55f40271749fe0a3a7e76b9ec011010e","212adff5b12d872ea0db58151db3f0a73ec7bef50ce137f1a1d1be0865bd0585","09bbec24a32e39122ab3fd25db21093f028bd0ce9bf4341321e33c916dfb9068","d5dc3f99d29f1117244b96e6909fd2f7606a1dd6c1ac808eac7ca5707c084404","0918c248d4cd846b5b7c6aa3fecf198ea3febd8e90723a5ab3720270f32ef636","fec64ebeb7619889d6cfed6603ab982d2dc26ac4d1d04cc969a6828da3a6bf7c","f04459b9ba61c87304fba45b50cf4733a09cdef8c20c5d4797a2252fa3683edf","cf737f3e889f6608e3aab682fcd204b242faa130a31568ec558e95fe4854731a","8a95755cc5c2521ccb2e1e885b99e9c4eec5dde7165a00c5828fb48cd67465d4","fb7207d1864cbabc2caf8800cd61bf9102876b172e9c6fa2008dd664f70d8858","9fda34f84101ef4835d243a0e65146e359d04cd03e433c76a0ccdc532f415244","cae21a1e2eba2d9a014f0d727cffbae7abdac416604f893deac5f07eef84e3ed","e892ec98bb605644ecd2848bdd788a136c626ca940d293df8f2f1ab99110b2e3","eb97a4ce74ce5f5fa16f1703481b35cd770316cd3d34167e9b76f4403804f896"]

Anchored

2026-09-25

Public log entry

search.sigstore.dev, log index 2948162176 · entry 108e9186e8c5677a61d4…

Expected log hash

5ff8f25b7934b5d72d363d6805344624efba4d637f2c851f11783b259b9d81be 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":"v1790226990092","kind":"published-quote","locale":"en","page":"brand:zasta","quote":"Everything went quickly and without any problems.","rating":5,"review_date":"2026-09-21","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 (539721061967…), 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.