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.

“Ihre anderen Dienste sind ebenfalls sehr interessant und auf Privatsphäre ausgerichtet.”
Google Play · 5/5 · 2026-08-13

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 2684091718

Proof data

Record hash (SHA-256): 09101713e8242e26c886e10088240740ab43377ac2b0deaa233451600cdd206f
Signature (Ed25519, base64): MDGC36mLTaQ9YEiM9uucl38gWS+v7VwSZTs6G1xP8jCBi982mohJcxc8AhLij6DLXKL4WaeX9Gw5swyCgzHACQ==
Merkle root: 9b1b0ea5ff073795652912177ab0790127c9d286c797e205e428b8d86989b898
Merkle path: ["09124023d56ff803b11724dc9edcede3ffa0d1f76b67fa02c54fe64ba63fb6c7","58cd479fc225b96bf6b5973925f1349c3690cc754d5dd84435b182d17b56afae","43eba714d4cb02e97e3a513ad0170d1bcf1414daff6df985b54cfbfc03e971cb","62074f6857beb6cf5a51d2b2fa9c2916c7a06c82cf375f4d59fea8e5c2cebb32","ba3aefa640e0ea40cc3cc08fb6ffe67dde1bb9bf17f4f2b81dac32e741de4db8","aa6b102d04be3b21a6ab93ddd1765ecf9c911eb6495caeee690e3657613b2ede","5ae41abd6a5f4fdb2a79a537443e527a3027f1201e877f67490d3d4a5b02ad47","fbe175edb2c0f555aaa2b1ba38d9da4a74ce500c2ced046b2065dd5b486019cc","e467c724086dd87ce0ce9f70ec35ef461ab8dd4500077c0d307a5ddab0aff324","4cb6c532187d0281638261824ff9446219647bd27532206c92b4410e5f255e90","334fdbee13094291838e0eacc15b49d44e39d04109f3c471fdae194cb3d6c087","9fdf2722c1e2da99c8523865ab9d73870a5693178709d80815ae462a63bb7c37","8a5809f94963a5df81714440927362d38263f78c79f37bf57de7b411279bcd69","1f2e00fbb60a33ba3643132ac67d23ed080f5d4ace7fdf97cd794367db9dab8e","cb32073192135525777f5779b873b337bde4d009abe6b4aee36e0d683387aeb9"]
Anchored: 2026-09-02
Public log entry: search.sigstore.dev, log index 2684091718 · entry 108e9186e8c5677ac9b2…
Expected log hash: de33a5856ee5b3a69957109416f9fe5937b2a435c3e2583dddb1e30f75d54093 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":"v1788333782203","kind":"published-quote","locale":"de","page":"product:proton/proton-vpn/de","quote":"Ihre anderen Dienste sind ebenfalls sehr interessant und auf Privatsphäre ausgerichtet.","rating":5,"review_date":"2026-08-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonvpn.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 (9b1b0ea5ff07…), 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.