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.

“Von etwa 7 bis 19 Uhr ist die Funktionalität sehr eingeschränkt.”

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 2657398434

Proof data

Record hash (SHA-256)

0932f2c7d3acaec05d4da95678ad36fba8d5586453878d02e90857f2d9b5097f

Signature (Ed25519, base64)

s2K+dIvYea0NRlXfIUNaiZj0F6rAq5dxhy80/9ENLA/wFzBdsdQ6/vHbcIQr58J5TpC6M5enfSD8bHmZzmnxDQ==

Merkle root

acdf1cdd0bdd2a199677e85dbc5991dc48c1e518ed6d2c5233af5991b4186e6d

Merkle path

["0931261d8593b4105880bd964c3c0cb28b1545e2bba94a3147add75fa97ee73b","84e96225a0993fdf78155cf99c39d93e386bab0b10baf03e3dd74dacc3516e36","ec395dc1ea4539b9edf380aec7c17f864e50f844b19a21073d762068521e5929","b2260cafb8e2e4bcdb67cc2f56aa515b88fe16b534a8ac3c8dd11ed7a573fd0d","e48dd6a298e08cb87372f0d135612803de97594b15a115a47646045423d954e1","7e26e50350ade81c5873a744248ba194f0227944d32059cc4cad9e7e377aadb6","5043f64ae1f4cdb706f761cb029ab8f639ccca00ed1193cff56f36874160ed46","1894009b18c2ecbc1abe8d633e2949fad6cf66d15c5c3c5c579acc5e4e13fd58","1e4014c5ece156e7e9cf2a984a4e93ebd256ac2ccac38bf90bfd2195f6292f30","f58b0a6ed6ae192d6f36206b27e495fe71af8aa226e356ab6d878f3d7018deb5","d56be8914f0f8cbe5274a96fd7fa8816cf0fce41fc6826030397e8ba6c2c1c27","e6d320b1a1c165cb3f510accf419016e8f913615cccc12cf3280df561ab3fc0b","5be1ed0db4a168c968a9338cf99a259771d41cd5263b972d09b2723267155cfc","f88b7eb537a26a67b92d1223a237ed8f66b05121bed134a4e98a9efb344eda0f","abbe7f57eef4397ffabc67ae858dc9e10b74d761241655f8d4d6e91a3ed19782"]

Anchored

2026-08-31

Public log entry

search.sigstore.dev, log index 2657398434 · entry 108e9186e8c5677a2042…

Expected log hash

654fbf62fc5d4d889ecdda697456043b4d29831eb78c01e70ea2a4db22de7769 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":"v1788145268703","kind":"published-quote","locale":"de","page":"product:proton/proton-mail/de","quote":"Von etwa 7 bis 19 Uhr ist die Funktionalität sehr eingeschränkt.","rating":1,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.android","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 (acdf1cdd0bdd…), 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.