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 2647504463

Proof data

Record hash (SHA-256)

06f3c7937d88bc7da31b6f0b76c67d8946bdb160cf121cea6929fbc6d3411c2c

Signature (Ed25519, base64)

KzvfATbADr4SqFHuy6sYfX9HoP/k6t3V50nBO4UZCPawF3N+3lajv6vOeGtFz7IoAr4s8cDta2xjXFPtGIeHAA==

Merkle root

fbbe54686ff192def9dac89bdc2006ad47a493d00db3b3a9ff43e3b123308061

Merkle path

["06f9682b00685b0d6966b6a9b32abec1d77d7b19c19546cccce5d6df61751043","e4e95b1789a7e39db388dbfc2257b8abd2505282dcd1bf490d56fb3841851fbe","b25feeb9a1b80a3a47ee56204868c8642ecf8dcb512455b95646d893bcf1f33a","6bea6d984aedf9bd3a52b2b0ec0009261812d80a4b68ec8180d08c7730c681f1","552bef1f86547414e7fea1e507e9b2483fd59584f88381bc9a5bd377d2945cd3","f219306d390fc137c424eb5b6837d33f802f5d737ee74c166064e017aa465a8e","c7a32e6758d75c46d334ab01cef16dba8296cdb2bf687aec295d81cd752e9613","a897ef144d75a1c15a06ae3616b6b65702858eebe91857a6817dd8439f949cfd","791bcaf4ba9102d116b1644ea297c85face6a758bed991af08f9db535ff8ab1f","8b84666fa1d40da1ed912de4561b19eec3f12ea1525a0dc1aa884beabc6fcbb6","038baee668e0b41961ae31c6eb9cbd80e2f8e2c6516c288f842eb314a3ad44c6","81209070664570597e8bf61666e34f9722287e281f0452904740719a0e227776","625eca1bb9e6a91dfa6035d766ca1bb6ab8a6b58b95ce694996f607f2e15cc42","924cd389915044788bccd2a79bfcfb29ab0fa44adbc43b1e7877ad3c03c87c9f","910ae6498c24b3e218a7772cda41516322afe32b5ccc8489f6bd972bc23cc14e"]

Anchored

2026-08-30

Public log entry

search.sigstore.dev, log index 2647504463 · entry 108e9186e8c5677ab12e…

Expected log hash

3bc4a58498687620ad93cc1fb735b54a6af64886697db4c643becfe466e70236 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":"v1788063157670","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 (fbbe54686ff1…), 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.