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 add non-Proton-users to a meeting..”
Google Play · 1/5 · 2025-12-13

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 3304616757

Proof data

Record hash (SHA-256): 046c3123d50a3eeff1a60d49fb478f9923af21c6a4b56d6ec3a8270f34434cf2
Signature (Ed25519, base64): M/taEllmyA53tIDRQCxHUhDgYs0IPYOQZD4RTPEzIDgIvMthEIeGcq6ielQpnOLgepT4jHHDs0vtL822cgY3AQ==
Merkle root: 2e430f8af8ce99087eb52c520bcfec9c7745da371e80a44c53f178593db80e43
Merkle path: ["04603a4e31940e4cc472e301f8e46f0671e40a29956caf777e71155b8ccca46e","6d960f4b455f729d9a2de59638ceec00f0242c935f7ba86aefcc973264c6151e","bcc656ec9645bc7f4ab993d46d1b894bcfa9ead71dec80671306be2d6eacd01a","4d9a6a7ccce0368a3c73c9f3ca229a26532f0fa23286af05c7a0b070f546bb18","e04473085b8e61e88025a8ee2be245fee87f64d216a67b2620f5aa9405b90db9","fe2dd587b66ede0605c1809b9e4c9cb2cd422474a4b5a1ab2ef484cb7e43a1f8","bd618839439e6adb35e7a93d635dec82344b02db88d3206966060fc8950b3760","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 add non-Proton-users to a meeting..","rating":1,"review_date":"2025-12-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.calendar","v":1}

Verify in the public log

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 (2e430f8af8ce…), 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.