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.

“Proton bietet mir den Komfort eines digitalen Kalenders”
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 2684135818

Proof data

Record hash (SHA-256): 0a5ffdeb2404e2fc901a16e1b5e67ba7eee6487ee1d37681522cdd4b0dd8acf4
Signature (Ed25519, base64): K2BtFH2lkqJWOFkCyeUdEKH4ouiakvbU0OSOpEXI3ECPJFGEcsb18Nz5mh9ssmvGT5VYO5fdehyOpTx8s4xnAg==
Merkle root: b3122ddd7ae78437c88b5c432d1d272e932d99a36327831f741296c5804e0eec
Merkle path: ["0a5cc8e2fdf2db64e8d1bc86419ae9a36992b3da21aabff5838f73b00991ae58","0a82b2403617e496e9deb35b7218b540f0b595542383492cd888a5c4113832a9","700fd0ba0fb4caee8b5e77df95215dd9014cbb644848eccbbc049774d3135813","2fffb7f90f1ef675324b37017d1bec2b043125b21e4be0a06187e6baf4c7a990","99fbf300272a529c029ff6395e63a35cf5119ae6f67f683fcc43cececb2c4138","e61cf46ad616238f244579ee69c47290c43a105736e8beab639117a3d106d121","166265d461d24e672d818cd7577c83f202fc3b4393a76e4c3a9535852ec67730","faea2835d64326bf404206b10ca14d0f68d66dc96ac5aac269d03bc01cd2d183","76948d4653f783b417aeea02c9cd02fde69826d3938e16299a5031c94255523c","806419acd42e24b3e77b51f4d552718f9664b7058ced279a206a9b5929ba4a63","7487c17bec724a864a363618be371822be9db6289741afe9b6a794766f7b5a16","afc410f4c7c2995a0b70eb5b9073e0604c33387ebf2e2381b9760ff10ab70cf7","c22e3ca4e13d6be34d7e2d787b0073655e272c17b975ef51a9080763273d2609","e0f5a3f9535914a67d876a5c4daca45483a20818791753e411dff623a270df15","3414a8c2f9a037e1540995688a310f939676497d9d86d0c2118ec57a53e60c3b"]
Anchored: 2026-09-02
Public log entry: search.sigstore.dev, log index 2684135818 · entry 108e9186e8c5677ac65b…
Expected log hash: aa65ff4939d7df1f40b93b48ba8bc57094c1090543a7b0494509e8f24b5559df 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":"v1788334509514","kind":"published-quote","locale":"de","page":"product:proton/proton-calendar/de","quote":"Proton bietet mir den Komfort eines digitalen Kalenders","rating":5,"review_date":"2026-08-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.calendar","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 (b3122ddd7ae7…), 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.