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.

“that was three times as expensive and took much longer.”
Google Play · 5/5 · 2026-09-14

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): 63cb7873e909731db82613606b97e9380f9f62fc75e40e3d30919b75634011fb
Signature (Ed25519, base64): xfu6Bo4NXIxQqBpJPMnD/0JYWll5dWzF75xytiiqCYq2hdw9oovQYFHrtVHZDlaCZF/7W/Z1AiMZcq/F+6A0BQ==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["63cb22baad83b611fc5e1263c6352a64f470266d5080545e57dbe2b3ea533181","401e125ed83f742ca168a4ba0ad40f8b79a1b34b19eda112ff6c1efe227c0829","798524fc72c5c09cec1b0e9d47feda81e512e3b81c5cc19a780c98de3c33d183","4abb94578fe068b3311e7fe9c7fa69b2af57d6f370fd34714d453fae26c29523","b8d51c4d6e0427f777dc9c0a6d282caa9ed5bfc90916d7194f6f373a4bd86702","29074c7c777ec3ed815fb1250543d4e4e7a008b93a6e4a55a58fcd84a12d7a47","31ad84406e2380fd46cdd55b255d3ca4e832d632c85d54908fba595d4ecb03cb","545abe8bf2ca3fdd4e5e01a3ff5c9fb0f3d75028e33c1197f7bea7edce6d2de5","98098869bd9259373898ff41a889646b0fc5387365ba979950a7acddfebe68f5","578e746d743dad501e2b0eade323af6a99728baa76d9c7dbf041995811c30332","aba2d517e838f188c54275c5bdc641f4ad14133195a1d59052050e295c11280e","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":"theme:zasta/price/en","quote":"that was three times as expensive and took much longer.","rating":5,"review_date":"2026-09-14","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.