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.

“the operation is very simple and intuitive”
Google Play · 5/5 · 2026-09-13

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): 40dd4134acd15ade9a3855626ee6cd11baa82030c9534b9976af5284f3596dee
Signature (Ed25519, base64): 8DILwt2v79tcG67UXQk+zuzM4n+oLRdo1bIhZEmDyxhqphVGh/eIHUfgQeAy+whuP5jVnvaOH1wDN3e5lwqRAg==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["40ddce9b9194c53b90d988a92e74e25a4cb758dc661914abaedafa1ff5f0329b","6e6ffef6df3af2b97400090c2f7eee48c5d0f8cf2e99d11fde6caf64af4b44a1","42bef9688bdc686a121478c2724fc7c15f439ac26230e29c236a48bc974dc1f4","3811def6af1bf99c048a0e3080fad2ea05dca4fc66eeb4c169ebfea414f3a83a","7a482c151a3e080a0ddcf464331051303a644a36812618f3c50a0de290e3a34a","458ece0ea3932c16979493bf47c7076bf54b726a7884513141aca8e26c9ded03","934af5d36b75887f3f7fb593311da2b480b5c9b7d1dec80acb5b409bc5e8e96e","c8e398c0270bc44ec8ea58fc86d669d01ba2bd812eedfae4af75ee8a55db2df9","9842b36fdc2170049dd2ab659234aa646be00b24ca863b0b367af09c7b942158","5b07ee7c72e0a5a17d39fe249d20ba23b3535e8e96dec9a4cd74c7d60c485a41","f48073534d04967032bd9ac91384760a0a1bc456d9669ebc9b97ff2671364909","b777467bc8ae3cec5a8e70892f007967fd913d3abbb53d3049fbc7d1261f6f77","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":"subtheme:zasta/quality/user-interface-simplicity/en","quote":"the operation is very simple and intuitive","rating":5,"review_date":"2026-09-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
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.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.