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.

“All Proton services and apps are very user friendly already with "free" plan.”

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 3668680919

Proof data

Record hash (SHA-256)

08211d89c1e6b5a3e164496d9c45a1bc0536a7da2c0c9723b5c09df3c38def19

Signature (Ed25519, base64)

JYi4m+/9lgRhzpTe9W76E4x0lRdmjBhQo/k81JE9s5JoUU+S00itYJqbHm+muhKdwGQw6WJwk7pDo8J/K6nCCA==

Merkle root

2722cbf3688f456d398c2c349c50045e96cda26d0251a390f403bba716d64c3b

Merkle path

["0800ea9cc2eb6d0ee8083f5ab40e194cc6dbe5c09cd1cdf276173ae0720fa36e","d5da29be8ac031483a477ae174596cfad99ae6d343aa795690422b6ed0eb5b41","a6b8ef99b1037a716542b7a1386a24d49a09a548e651b1175a810e32c619304d","0914041b3a713847b433736fdf655bda209467b016f7f8ead05d825092810081","b290a7392435ece191e1a4501c8d9a1c79fdfbf925ca511e0fe5a40c797c45c1","20f40c36731dc1ad1cf1a709ab31fbe6c76bd7a6c0d5e0800be79c2b09ba7f4d","ad826a877060ef02f16e9f2204101b80fd58a5d1166f006d94d8ca6f79a91c4a","2a82918207b68e11cba74dc01982af87aced058d1e5e33fa8b72cd90f38f186e","385e114f430f090f46cbec76fb954c21a541b29f7dd429a35a202229e2e9fa7d","e371b4e731cfddd5e7d5600b642cff649fad0301124bf7b072b7d623903ac5cc","4af332339a39e6ea76d62ed99c46c31598919e13693263cf6d909d061d8efddb","937ccf716598c310ad94912d78036fdd767f36111c011e345664249121f46a8f","e17aefbd7b422ad270c6969478edd518eb38d3eedab10292a53aa045165a0e2f"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3668680919 · entry 108e9186e8c5677a7c55…

Expected log hash

b9da8ea83055b2674fdcca0c2d48e6dc1984e46d36af8cf72ce2f4d2b7fd0005 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":"v1793706705310","kind":"published-quote","locale":"de","page":"brand:proton","quote":"All Proton services and apps are very user friendly already with \"free\" plan.","rating":5,"review_date":"2026-03-12","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/69b317469b8ca7002e112eac","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 (2722cbf3688f…), 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.