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.

“Super good service.”
Google Play · 5/5 · 2026-09-17

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): 3c9c9ca2c92a76d40ee0b890d4a7e21e4d0d6e5a60d303b8cc22721d23a0f407
Signature (Ed25519, base64): ZkK1ZJGpBXJ4Iykjc2VEK0NESahrFy9tqfpPCgy2XqWOP0eNMViLr6cp+1DJVVCHaitzTg6xWTfv5U1op/r2BA==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["3ca3692150bf33462302774531681c6a6f158ef9ca20264631c2a41aa05cefc3","46f89ba6ad4d341ea91d97646ae0ec93b3c7836fa3e173e5834f141d23e593bb","ca13c43e80d244efe1e66e18b2b34c2ae9c009ea6a99d77bf7be8ad96897617a","e945bbe130ad1a4b703dbb1278e93176fa1ce4c79be6dc977b295cc757c55d82","9a3f4173ebc8cd897fea8e6c5fca9636b0890b13b8a619c9bd061b7d0750d216","220c0d32ec679f90fe64e324542be074353455887b99866eb45edcd0307e3675","04de282f6fc3464f2dee922bff726ae50ef3e3135dcbc3735fc8bbf4217bdf33","6e9d74f9defc24c65a760df438c3533b4d616c7acff919480e9111ddcbeaee3e","055fa3163660601cfb5e490932cd4da8bdb64b39898688c8287b0ac119b9eca9","c183fbf08e1e56b03c3c3ea34adf40051b5365b0be631f83588557fb2dca4300","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":"theme:zasta/service/en","quote":"Super good service.","rating":5,"review_date":"2026-09-17","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.