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.

“das Proton-Team hört aktiv auf seine Nutzer”

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 2632025295

Proof data

Record hash (SHA-256)

096c123568f43ce41bb68ceea11604b87d3a3c28c13a22a6cebadd461f90265a

Signature (Ed25519, base64)

chXzW9B7gzTIqo8duZmYmD2+bt7y8vOpYlvmkW18KTF37H05s3x+Jx7QRLvwAJrvD5fjdqb/rD8bzMkObl1zDA==

Merkle root

fd6fca9e7cef37aada941aac92decfcc64f6ccf1f80e46f326058d1dbea3be25

Merkle path

["096eec45f81d4593ace5a63b7bd2d8c723abe67d78a1319f2699dbfafa3e6105","dbdf76c1f1c300b1062aff97173aff3fb4c1c25b85f72d39f6da7e0cdd1dd4a5","36c6213d287f6b0c756bc971b0ed3059c80d17b40a4c8045aef9742ef7d3a03e","c87c96a220af40ea3e8644a423035556d9aaf14fe34fee44bf46e9edba569b20","79b8cb017e4661dce4d627b1b0370a95bc71db264f87604a84873f5818e9c097","a06127b56bf8f78969defb0ebaa7ca8cfe31abcc7dd037a2b3ff3c59207b6e59","36045121d149282f51d3916c517c264201a26bf63423511b2feddccb1f46913c","1404c9c447a91fe83129832f5b4b8a2320ac7069ae5dceec137848c92e3549d4","67f7ff6bc8e7087fae1cbe6b90642645fd14eaceb63f87ce4ba05e309a6f3543","44488c47d219869af83fe2ff4d4262bdadde946a1a948f939ffa754b85fd5ba3","77632be5cceb5febdd8af219ffd23d5ca14528d1d5fb1f2ffa88ed55dd25557b","9920afaecdf2c0fe347b654bebc1ac5233b2ab1d10b2ded7a1a817299c6d2453","f88aa868377e782be92c7bc17cca7fa56bb539fff729ac4b230ecbae8fe3bd50","af8b7672f7140c4d5f8cf5a204256eb8a0fe0ba6770180d832059e5b511f691a","d2a30b01208ae5f7745e5c8a474c1f34f9628e43b7a0d1b0d1ac6b378b7f866d"]

Anchored

2026-08-29

Public log entry

search.sigstore.dev, log index 2632025295 · entry 108e9186e8c5677a7e39…

Expected log hash

327cdca6f67e0b8900de427ba632e65f297b0edb716ae3a08de15ff81c0cf3b3 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":"v1787971088504","kind":"published-quote","locale":"de","page":"product:proton/proton-calendar/de","quote":"das Proton-Team hört aktiv auf seine Nutzer","rating":4,"review_date":"2026-08-04","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.calendar","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 (fd6fca9e7cef…), 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.