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 app was very easy and simple to use”
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): 5b930e8daadb38459183b69b309853ff3f21b675420c9fb48e03708e33a418a3
Signature (Ed25519, base64): hE1Swwo2X/gIzPOwl0yrufcLKzylGxHhzWKw9EWXR3DFG8JnJbw2E9Fq37GXY/neM5jL+hBwNGnAbWg0esYpBw==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["5b911f0ec32376e10b81d531b72a5ca1e9506b17b677a91274c9740bafacf56d","070263e4e1f4007acece5c7f59a92a589cbc7e34057ee1fd7a0793c5a6ec2a22","254f80692e83f1d2748c175f736c683e79bb9a463a079430d11d0dd5e9e43550","39b4901bb56c61249dbcbab8ce646b31b7504e93e65eecccddecda93feb28aeb","f74977743afca4eb5eb280bb027f963a95b481c0ab0f4f7359fc1ceadfd18c8b","e7b21916b7312b31bf9116df8e02888ee4abde5391c94c8c3ca0935c0467775a","98441932b3c381eb3c8995658c225cbfb0b169a3f13fd38c068b4af1755cc310","d2ec28f948a5544e9cc16038b272b8b5172241435060ac0a3d409e54157f5cf6","be7e882bdbd87623b722dbadcf35d823ec48a445da94a3bbfdb9e32751a94362","c782d4c18e4e1cdd72fac33aa9263d31c2e967c1ccbaff39acc3a2c7f5650ad1","ee55d509894d6b36c466fc580705f92d6257b05cf0eebf4bb03eb6cc7a6d9ad1","d1b72c3bf8fa39f702c9362c8122f6f739a2de01186541ca432c0227324bb610","63caf53777d803af92ac6db2d445588376da791f63be3d8e14916e9cc99957cd","f5d1cbec3469173c409764ba850b613628c88020363ace8f472e6f611d605e0c","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 app was very easy and simple to use","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.