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.

“I wrote an email and a helpful response was soon sent.”
Google Play · 5/5 · 2026-08-11

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 2683442043

Proof data

Record hash (SHA-256): 069f1976b7bcf012b5650ae5afc888bd176959b7e6afd2a60b43860a3ff02005
Signature (Ed25519, base64): K9TpFsmQMQdmP7XOFx6gKKhV2+6IGGEcHGbbz5JsoYw5CyqXXsXkb82PuhIrN/q/Oy6q3wiT+t/+juqTJRKgDA==
Merkle root: fe94c04c20b3266750f4dbc6a3653f61780d445d01f1545120f6c37d36d71ff0
Merkle path: ["069e16f9d58f7dd6f17ba8781c5de8255d7a35c14fd8894b89ad3fb33d4dc2bc","9e2f23e3f303e53954cb125f95e54d75b73c412f05a17ef61c29b942622dff14","e30960c64925062092f250dbce9fbc6d3049f1ebd875c89bcd6d40818c7ef8d3","4fdf8a9548a5d3d06a2f08dce4ff7bfd17162fab8f55b502000937107a974094","191edba10ed74a2ae926eaf374bca16828e1d4f47143a7f1ea30253ce5e63bb3","9f5341defd930ec2d3081cf08a835f91a2f35e10343964783db5b946784f6450","cf632f5ddef543decce6066e05f2c338c72a032f42d55e11642f9070e2d54ae5","2d616346e323c282ccd72712b5ae3e3034ec2a38b8c5e394ce6ad480de7f9cf5","a5fa347e49ac1fa9f6484f16921ad8179087384557f6e0983aa2d16270e0fffe","5afb88c540a4d3f8c64a218ae2d99df961e793fb3905785768638d543b060c23","20968daf71bdadc0be88318e5962e0b87a6c173dff1187d1d16b542dab199b01","01463551ea824d36b27f0920f232eed6a517cb49211a3096e69f375a94ed461c","93f8a73d581d5a577779ea4e3a5ec90a9403a343dd763f3df4c580b86533a7c2","9764411b9036157d4f3622be5a17f6276b575f16c417f7b08dc6150c7a3e326a","360c1b8c241372c87353049db4729fbb13151e7694db18a4b9ba21ddb2c2ab4e"]
Anchored: 2026-09-02
Public log entry: search.sigstore.dev, log index 2683442043 · entry 108e9186e8c5677af84b…
Expected log hash: b32555b0c0ed6ab3025d809fd17065d5a2118facd0208ca397bd6fef92debff6 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":"v1788325010619","kind":"published-quote","locale":"de","page":"product:proton/proton-mail/de","quote":"I wrote an email and a helpful response was soon sent.","rating":5,"review_date":"2026-08-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.android","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 (fe94c04c20b3…), 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.