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.

“Abonnieren Sie Protonmail nicht, wenn Ihnen Ihre Zeit und Ihre Dateien wichtig sind.”

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 2612065734

Proof data

Record hash (SHA-256)

093331d08138d5b2387dc5cce427aa815662df871ff24f6180cbd7d06a5e87cf

Signature (Ed25519, base64)

b9rvULwxMeqBpglCYcqib0pWPuvMBfb/vzydqsnURaupJxbPJHzup92XCAjl0POvhNQBuL9IWShDUNeoOROtAQ==

Merkle root

62493148956a8c17abd53a8c9ed797b64e65ad5bb98d36b7aa8d51c339fff025

Merkle path

["092be528e365f96823f2538c9db5085244b5a90bc156dae1b50d7a62e540fd5a","81151ffdcc898cf56bc2438f6787a4428e2e2d622e3a5db4a7429fcbe7ac458d","ebc9e3c39c68250506bfdc9fe5bd63ba68cd152a8b5e35a826df1db95dffc4e1","3916535cdd25d567659f6822dae14de522d5ffc1264dabf7dd3166eec86d2a0c","9533662a26e9c6a8c91c364a796efe9584441d198b6811811d169aa9a36c16ae","bbacad412eff5ec0c807659878f3359bfc266d528708b530d29e59da4f5c4118","a7354719e56fb099e689e67670decb563655030d50a44d196bbde44d7249fe24","4320df642709ccda75936e62a95cf343edd8a367d5997fb9b6a0f0cad9036217","5b82674e6d3f1ce874d0af881f273a3194fe3faa804cc6d6838ed64721d93703","06eea9849e882ca69ba0d540af4f40537afcc231ecc38e349c3e3322b8410a9f","b0590550f11f33ed86fb55c9faaf0f398cd460e344dca34b97360a8eb25428f8","aa27e16e99a5c7264be75cc6d887e1542ad1b5d8e7c00024d09648982d3b9c13","0d5bfb2982eb496ec91088407bc450b593806e0482bfe81826869f4aeb42c62b","8c6d2c7076ac2ee0b8e592fee4b535c629bf4ba08a80f3d9ff8794fd682b8ca0","81ca6ab71bdfc38d6690336508e82bd1e82f9a656f0fefa771d1028af8c796ba"]

Anchored

2026-08-27

Public log entry

search.sigstore.dev, log index 2612065734 · entry 108e9186e8c5677a3494…

Expected log hash

f8318c40dc89e43be6c4faea0c023b4821c7ae9aeb6f05e59b451eef93c53bdf 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":"v1787797679240","kind":"published-quote","locale":"de","page":"product:proton/proton-mail/de","quote":"Abonnieren Sie Protonmail nicht, wenn Ihnen Ihre Zeit und Ihre Dateien wichtig sind.","rating":1,"review_date":"2026-08-14","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a7f663d22770cc66a413787","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 (62493148956a…), 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.