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.

“this is so horrendous terms and conditions you have there”

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 2776103867

Proof data

Record hash (SHA-256)

09e1936c4780423df3c5cab601b8436cf77939fffa557a83579836cc66d5899f

Signature (Ed25519, base64)

1rahDrW4ThX1VkubWiXFc9s4fe+s33Y5JoPmsTrHkni9HDKx8efmN+q16fcBaXilffx5FKyugA1gLHlpjZV1Bg==

Merkle root

4dc0bd79ba3e9442f7f1feb21f347e2f6fdbc72e99098aa5164776a6202654a8

Merkle path

["09e189352de5914ee8ba6e518b73a571f5a7ec5f99a802077af18534877a2667","7bcd0cbf092aa2422167cba5fc2484397c23aafed4cc3a3226ec70587a6cdd73","c52af37a5b1f024be8c8c3692c214d132ecc4b2100b6a330dd4f8fa4de38ab61","256fafa0279d55d11ba8b857914e64de2daaaccc781bfaeb273faf25a8d896d3","408ebcbf127a15c83c693d1e7cd74540df1eb269880d8d5c45147fa2ff2a006f","40077dfcaacd953b96c07e5598032f8c06ae000a8f75390260400d746eaedf27","0ade51934121dff8df4168d9dcedb373d25703b8e67610faf4f6c177469fc0cb","6b26e2bd2cb43977be3b95943b49aa849f4113c6fba27c3fa32aa9fae41782b2","09ccb8fe51c9bf65e606ad05b2b8a9bf6dabb5c629792ce9ba6e22faa4362ae7","2ebb6fcc399bfb6964fea30153be32e10c4237cfe833f87acc9a0f91b764c0d8","7575f0e9b925b29131359a70a1a4bf923653e24bbf6b0f1c9573fe99c5754b0c","601d3d5f4fba7ccb8e25e8db9adc4fc1a6094821bec2364894f7bf4c640df5de","b64868d5884e6ca103d8fa1886b59a755a471482d82618eec868304914b8e334","72f96e42060ae616ed33b8fd6ac687c1899623eaa8a351026bf33e2e7a041d34","e60c2274998b06992577796b6abe86bec144203fe960878f7951a3ae12c9e532"]

Anchored

2026-09-10

Public log entry

search.sigstore.dev, log index 2776103867 · entry 108e9186e8c5677acd4f…

Expected log hash

2498329b7eaf275d309293dfbac35d05dfb8a55c65956add8448561c05945f28 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":"v1788848066028","kind":"published-quote","locale":"de","page":"product:proton/proton-mail/de","quote":"this is so horrendous terms and conditions you have there","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 (4dc0bd79ba3e…), 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.