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.

“kein Abo abschließen”

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)

118ab9d394200ba26d90c79141d01e29eb135b4cd53d31206be052aac84ff0a7

Signature (Ed25519, base64)

bOop0crxzCTISROUQHDlrXVOr4AiYjKYLdRLwTtqOh1K/I3tfTkhh4h+P9g1IbeDhiWVJpfe70EMa1jqoTWYCQ==

Merkle root

fbbe54686ff192def9dac89bdc2006ad47a493d00db3b3a9ff43e3b123308061

Merkle path

["1188ed0cc28f15c00c96949046c1670e172b22918d322782b9eb672d41f2a925","36f265d07411e4290464ce41c90da3246485d516b2b5476e3c6e1b9b3d4b2be6","16ec95aac9574f2865b86ecafd5d662663a04b9e898fe6ef4cc1e2f8fef1d3bb","4bb50258b54eb42b06ddd3a598d3bf455e0a20a120b17eb10a825bbe2c100054","97663c73d4684c1ab26f9488ffc23281bdef40fa140732e1ee0b4bc2f0b2dc4f","4ae8e411e7a88e38690082eb7673bae950a9a03db00ba58dd33b099be99fa070","fd89e2de2797d8833f82bd3ceb153846de4f7c33af429588151f1da0a4467faa","ccc01a032a19ed7e31ff635f45ec24ae30d2e16f27ffc39a52d10dca65895cdb","0ce4cbd13db590bfe2515f1cab46fe1fbbd2a839ca2fd60b7c8847386a3d2aea","263d470def7580ad6e06d5702530792cc2575c633bd36550cc310c9483f9dc0b","0e6f6371b58cf2500327a70b004c370117a0f78370f876c41c96de96ca6b9321","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":"brand:proton","quote":"kein Abo abschließen","rating":5,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonvpn.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 (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.