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.

“best app worth the money”
Google Play · 5/5 · 2025-04-03

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 3124210377

Proof data

Record hash (SHA-256): 33a233af081d941b74065288102a551bb7f3561a0657fdccb24a044b7a880dc9
Signature (Ed25519, base64): XYNw4D9BXdBNgoYnJYcsfS3WYFD3hVIQKiyTj586s7c2eBsNtlq9Dxkw5g1HlfY3mmlJ6cqLsLRXvK6xhbLTBw==
Merkle root: 3b820b0e91b2475ca02a79fe65f1dcaac35af570ee21f4c868099b9c17e17c1f
Merkle path: ["33a7a1460e83c28a74e26109c47477ce06f2d2c9fddee099121a2fa0501c4914","d8f2ddff807dc0267daf350d52dabbbdcad7431a1c3b59aabdbbc01c96cc94a6","5addc9580f39aec9e8c7a56b3cc052754cb4f8d10026fe06e10a7cef329283c0","39fced31b1e872eaff40099602fe91ddb6b4bccf104a804c883e511b2b7320ee","c1e7dfb989b6ade74d58c1962376a5922dc66cb284db640c79047c9772f9d3f8","9596a66b579caef2a596b6798c63272a5443f43ef6539028d92a81e24fece6f8","4069dc16d085b306d987dfebdc320979f1ad918f90347231fde82255465c7551","da9b7d7f954d63ae89bab217ac94e4c670fb913ecd16b24859bd8c826e95a29d","92638180155ad0f99b185e17ab6d4e90ad01ad424bb49d01665562308e4107c0","1c9735fd328bf9d28178365f8644b7e79820499165c279aa9e36bd0e0b9f44aa","f82b57398aeae2d2d2f0256ba3c549e3c91071c5ca36b528cf18332d7ecc349f","ffcfed52b9455aa3e50796a1dc6caf3cb86e63134b1bc8918007d3b0e479ef20","833f715febd1c4a136edb6739ec6554c0cc550753cc4001bd667664cbfc7f50b","e448e4cc350a9a69a05538fc74a8236040fbec1cdf0c4908e91135fd4a29e380","92de2c105ee268f1f08dcd9d0a8fc946130cef7b39b15a2b5ed0d7209687c9ac"]
Anchored: 2026-10-07
Public log entry: search.sigstore.dev, log index 3124210377 · entry 108e9186e8c5677a0172…
Expected log hash: 20a5241ced0c7b94303a7b8002f1aae217df3f1371aea54ff5745a148bddda47 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":"v1791349684588","kind":"published-quote","locale":"en","page":"brand:threema","quote":"best app worth the money","rating":5,"review_date":"2025-04-03","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.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 (3b820b0e91b2…), 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.