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.

“you cannot edit a single event in a repeating event setup”

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 3304616757

Proof data

Record hash (SHA-256)

066f52b2588cfa69e4e75d26da390aa97b60943c063587c06b46fc2fee755f89

Signature (Ed25519, base64)

obStX6jsn6ln1lRmKXE5YV48npc1Ee3CsCleZDiLe990E9/gIJClFdfR9AVHSjYHRD94JYAjSTkwGIISz+AbBQ==

Merkle root

2e430f8af8ce99087eb52c520bcfec9c7745da371e80a44c53f178593db80e43

Merkle path

["066c08bec8afbda1d7ad5c127f525cb1014444f771c7fb20de852349b2a9cddd","a4549b385696a78dd2d22c73018fa11793ad686fb0ab34aef63b98add61e857e","323b793f0cba11118ea87bbce1ec1249b04eb848bc9ec5d97450c3a1c05856ad","ffa43d9f68ab2fd8cf012069c71709976e45b66e900f5cc874bd5b6d99b04570","bc0fa456e724123bbf0b98e1b09c5c3ce7a72a2735077bbdd135702107a2fadc","ccdc33e64546a4b30ba5bd7f9e386fc942c9f6bac369f409ee37b7b7efbbc958","92ac86625d9017bee680655805f12e15bcdf29c07171e397d27d59021bb44e5a","5d10bdd2d95edc5a7d99425d4b0a0db25ff1ce6167f924d35d8f545532f60f8e","5c7392abee0140aaaa9067a96732d674cd8848e79bacb939163c8c2f28a874aa","d664c0e8b09fce4e2f530765149f4da48f7a475cab7f506c4a76191e6546459f","b698e290e91981c94a2c15042f34bf4f42596cffc271aa1813d91c997864e64e","dd8858bdd6932cf95839a0bbbbffddbdb81842bd77358a725c8c0e903d04a580","79a26519bfd63e811aa50c9f6ec20de38c33194c5e5671e72fe87ab77793ae98"]

Anchored

2026-10-18

Public log entry

search.sigstore.dev, log index 3304616757 · entry 108e9186e8c5677a83be…

Expected log hash

a0fba1125c7f8ea996ba73faddf9851b62585f74ff5f7e4242cedd1df157f403 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":"v1792290386675","kind":"published-quote","locale":"en","page":"brand:proton","quote":"you cannot edit a single event in a repeating event setup","rating":3,"review_date":"2026-08-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.calendar","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (2e430f8af8ce…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.