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.

“Protonmail ist als Dienst oder Plattform ziemlich mies.”

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 2681975448

Proof data

Record hash (SHA-256)

07d0a1d402d74be2382b8018a06076fc66d759de81728e0b4b9d6351cbdb61b5

Signature (Ed25519, base64)

p+/Hx1jk4cNFwNc0O4p9OS4LrI4SI6490bBnD6FuHSL10kv9oGViSyOSD6/qOuOwlvHNPIOzYcTvGwAor4AgBw==

Merkle root

d124e5a2af562a6c1905db0373243d4ce34f50e6bfb68d4c04dc573a8e684f0b

Merkle path

["07cda62b845eed8c93d4d70228e8a4e8a66d313f2214b928d550a810db52ad2e","9fce7860f493255363483b396d2f69a8694935c08a7bd245a05c7a76bbed1208","ad0f8a77913690b5a994f493b9de1b68b170fb92482b01e7f3928050b405178c","0c0495d238abc0dca7c915dff78c83f20bc20e51128bf155ee44acddc55fb23d","16c3fc087f2f189180a201d84fa0aa522d393085e762888c641709f60d4e9307","ce93458aef13a5b707d1ea5b10802f3840ca7d6331bf24583763eceee42dbc65","2b0950a385853a057c9d8dc3ada392288aed0e70ddd4a2060ad7cabf5ce65259","b3606e23cb57ac74bc5b6148bd50dd3a3ab6ef1f5d1cc33507343c549b8309ec","a3ad4df94f627c8a75b737ea45a3d0fe4d03658e34e217cca5e85a6dbd3385ba","d9d969ca7c9004f96c0d9ef64bca05bf795474f8281ae23caea3ccb9fe12d5df","2f334967cde9cc6cf92f76b0479943f2aa06e42aef8bc4c111bae4b291727143","ca8bf0a29a1f21fe85ef0a609f9932cefe7b94e8d1a3c009d3210471f7cb78da","2329ab5576d328792577ea9a2f93e5320b27f7d5e563c422a4bb8b1246b803a3","b287ce927184f2a91925f933012c347e3408a38af240311834bfc2de85b81b88","ae0a60bbc31eba7126a560c1dc0c88972f060767803fd062a22f4d1b64ebe8cf"]

Anchored

2026-09-02

Public log entry

search.sigstore.dev, log index 2681975448 · entry 108e9186e8c5677a0099…

Expected log hash

a6874452aeddf02ea2fd29d707bc91d5b5c68aa3036290fe558d8adf2a5f0bc5 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":"v1788310340973","kind":"published-quote","locale":"de","page":"product:proton/proton-mail/de","quote":"Protonmail ist als Dienst oder Plattform ziemlich mies.","rating":1,"review_date":"2026-08-10","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a79fdb35d21d3393f683027","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 (d124e5a2af56…), 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.