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.

“Sehr gute und einfache App.”
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 3258673097

Proof data

Record hash (SHA-256): 4421d6a8cabef20416c18c9f418b166088caf7d7c42123389d090a568183b2f3
Signature (Ed25519, base64): KOJOf2dA+2jh4/+UWbJpOilx9NUPHiW20HjE+5wcNbsfbvG29LcpAFRsHZp4u0sqhCWaqrYw+YfkzgJEVhRCBw==
Merkle root: 1e69109d842117168677c2c7aab9689ac78923960f86fb642566271a6ebec358
Merkle path: ["4426539de82af871c9c56f91874d45f47efcbba0ebbfa3c5466230a236aa704e","65ce7d5fdd692738c610b4bf3eefd2c5163a021a9975a76d3dbbb424a01df47d","74765bb38a7dc8e12f64614376ec7ab2844c1bb08ef5d85bc69522dee3328b4f","1c5ee09f99c696e2b500e8e9e34aa23fa686ecaacc83bc95a9ba389856924454","c97934a35157477c900b82c32ce11b0149978c5ca44271d1acf03e726a41b350","de1d065bfe86e7a0f0b7e7ae951e6fe09fc24125feb845e8bd679f0e57d2c36e","1d74c1af4d4c1a2c5ed0de7eb053cae3a0cd30aeaaa1b51e8894cefdca73df2e","1c4170055b281f1038dfe5ae77039289da9ea54d0adda635d01fd261963bb872","08d6b638ec5d43c78bee4be713ea4f652b047aa71339faaaa6531d44db66889c","7122c460e2f15dedf91ccaa262a85cd2171b4e42afaa28a96bc305aa7c641f51","6318a83c2e1ee58845bf55345bee30468d1ac9d637861e98c85cfc50a904bc5f","c00b3aaccfb9ee06e2f5134db2c03b896d6aa380b3457d17a26c9b0b2171cb84","7c33667a483d5fd3b9ed47c00df3203f479cead457d361a57e3e5a90d1401d8b","4db0e65440b78c494263fe6b915a75fbf2b04ea1cd2fed0eeba5f9cb4589aa37"]
Anchored: 2026-10-15
Public log entry: search.sigstore.dev, log index 3258673097 · entry 108e9186e8c5677ab832…
Expected log hash: c57cff5f0f2da5f1c24e09823c0cd10c485830bed55f44ffe5864187f8e896d3 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":"v1792033864449","kind":"published-quote","locale":"de","page":"brand:zasta","quote":"Sehr gute und einfache App.","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 (1e69109d8421…), 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.