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 3248278454

Proof data

Record hash (SHA-256): 5504d07b596ac21f84a23681db1c8f4c75dfbb82d7f0f7c7d1572be652d41ebc
Signature (Ed25519, base64): K4kYI0niffUe4zRzc3oX3VMTnELFuEj329Rt7U3qu4bscqVvqxcZcGoXGGUleyc82Ux1S3p65tAGJHLTkiaRDw==
Merkle root: 81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451
Merkle path: ["54febbe3e5cfca4a1938991d1d8fcfe789ea4aac3cdd3a315b185493c831e351","8ab2c1588c045d4432b7ac5a9009ec07bfe28557e4c9b6306834be8b93787c1d","229fe3f09c01e4f74ca0d7f2311f62eeb2bea6eff6f3163660d0be9ef71461d4","8323633df08f272dbfb7ce7e1a592ac7d176bb46029b1bc740b919882caec4c2","33b229e0ce5c0d18b919c3bd8bb99d4d02ef289421e707431e428b3c731be93e","6517efd96049a20bf28182c22772afc5039946ca5a2fef0cc59c26e849916f75","8c14b91d065a71b4a5f9aa8da463388fe6024f7b80aedfe2bcc32f4bf7fab4c9","182fe132e54c9919133ccb2b26e42f89056641332456c5d060bb9a167ff736f8","70a5b8423616571fe252da06b6f46426d78649d708d1a4c505c65f5022428e47","fa6ccde5491dafb2ff778b45d3e8a09145a1c3f73ea1c2557d62b83aeea5355c","cfd5cd803ada667f9ca2715e10233c8921b1a46fc863f814c429b8b24bca26b5","3fdfbce5ad21b885f11747a0e764cb6dc9b91f78a8b6101f3123635e0a22e27e","4fd1b36929337d346b3723be273df6d7588bc7b080f058260d538b3f309857bd","6fa310e475466f0115dd6b7ba199f23e915f2a513e2610274356ac5bd367e940"]
Anchored: 2026-10-14
Public log entry: search.sigstore.dev, log index 3248278454 · entry 108e9186e8c5677af67c…
Expected log hash: 4dfbbd25ce402c4821f7e2d50b18e091e9a30465f45669967c545fb71910f358 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":"v1791948368672","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 (81db1abd6b6e…), 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.