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.

“Exzellenter Service”
Google Play · 5/5 · 2026-07-28

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 2579329594

Proof data

Record hash (SHA-256): 097bebfec07715e0c029a14600366d04f38beed2c7571566a2bc010906788aaa
Signature (Ed25519, base64): fipydvjAoTvWyXrGwlNLFpkfkSXCorYr8DJXIF0pib1+v87qsCE4joFyEOALlF4CYhcaOOPdQm9BINFEXVrcDA==
Merkle root: 61c0358904092135da9dcafe8883af2adb0c61440bf491948394c6fe07255cf0
Merkle path: ["09797eae2e00ba69763a6808752dc5480f38cbab5410cd7f69f45820170c4197","671131bd36fc8868ab7669f78bb537200effc294b802170fd519b2f84b604a5f","905e36ed9be3bee84202850c0e25555a1a0a1740c3830f9932703fde76ce408b","a23c207a33fe5879b66f40708ee2470c823193270adb3e1b8ed471bb676b3d95","5bb8fd62eda793fd59a61d389d61ab519da963182618297c9da0f86d2894c7ea","320a5d60cfb7a4e661f769c9baf187cc0c22d58ce25f4f9b6af7409aa61e9751","ad1ea1a82881b479846610a38a332db238f84eccbc46060e18d628f525b0ae92","8efe997b84391ed8ce87bd59f1265a425228c12f556ceb26457f4c44ddd2355e","010a9ab6c08439a6b6c8a97a9f2485b6bdd5c1ac47f66fdce44f1fc9d14e1afe","42102fad8200f70c9e6b1ac9c5eec412503be2ff3fb9a01c5afda2922431666c","4363a9c7a72ae1364a6e5dd0ecd88499a582bb687c3502ae3bc2102e31c7680d","87520a43200c2a64131784e9fcaf857a7240782996abb4557bb54db56d1e2ad0","71cae424255aa4638e3d855f2e4d0d3ec8f410d9b00b335969ebfbb7884e48de","5f85197a8394f334f8f9e8be202ba3ec072c11f71435e83d07f11a0a073ecf02","6b5b9926e6b590cb1bd6278f63edc47584ee36101706f8e0b22f8404af273127"]
Anchored: 2026-08-24
Public log entry: search.sigstore.dev, log index 2579329594 · entry 108e9186e8c5677a2f40…
Expected log hash: bb1ce4990105a11e35218e4ee0348633e0f4be8179db75acbed652ddd79f7a87 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":"v1787538369368","kind":"published-quote","locale":"de","page":"product:proton/proton-drive/de","quote":"Exzellenter Service","rating":5,"review_date":"2026-07-28","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.drive","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 (61c035890409…), 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.