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.

“Kontraproduktiv, denn der Empfänger kann die Textverarbeitung mitlesen.”
Apple App Store · 2/5 · 2026-01-08

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 2514383033

Proof data

Record hash (SHA-256): 694a1c6e24ff1463137f31ee1a42f03dd7ad2126704a39ec125117353de40fc3
Signature (Ed25519, base64): 21jd1dasnFmlq6J99gg3oxNgUqW8ETvYYEUqYKKLoOQxS7ZF/t7/bhTiBknVaTXVBvCxbJ2hCvzebIXZ3s64DQ==
Merkle root: 197f899fafda406e0c9d0591eaf3664c281655082dfd19c34045187b374127b6
Merkle path: ["694d137c9127dfaf39760ecd0b25f1c62ac5972452eb81afae3a04877c49552d","7f202001c0c0202559b9ab5794bd7ba77dc2bdd2b59f9922c4850069faff3ba6","8d3630778b8e2787f55c6c33372f3078f048c54e22cb648c0cfc5139ed3d8b8d","cd311b402bf5e4254870dac7e4616fdf6a456102a35328301e89a15cd7532d11","1dda205612f84db0417fa88efcc1a254747598a6b63b9ed2fceb4da97d2a61a2","39344b3096226289a06fcab15841d2eab34b2faf7acb1c472a912cb8b2a7142b","df1e3d43565c92d875cf5cb69ce9f268a339d5f74cb89c14c0e448da8d7b66db","cb08b0fb1c1e861b7dd3530bd75ea26a38a9dfcdd831489d63c25defb2ee5517","1974a7e772a0bd460e45cf579beb20f5b046b277c877d267e6fb9df4bed04afc","c9b4b0c58c07d61bda9587e31cb75c4fcbcbc22d9a3d19161d69178ef60fd69a","4e7708a88a8894df209dc83ce410baaa422548ae4ac5590314b8935a7bfec909","5e604b5a5ef639be948323e0c4f5e303b5c481fedb2d584ffe1d863b4c3faed6","b26bec0bf0b0cab86d0ac84c71035185380da1f423e2081c4e404f2e13042a04","d72b61e7a45df808bdf968855d1d129de3ef5b87939ca0a06b3c95e25211241c","7b5d4c2155ce4f6908bf1c61cdd8b51ce48d7dc7c5d7f3bd9a7ce68fedb43f21"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514383033 · entry 108e9186e8c5677a6078…
Expected log hash: 4e5cbdb3dc34f3dbd6a57b603e905df6c94968b41f5bd83d5c9a25f2ea060d8e 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":"v1787127398505","kind":"published-quote","locale":"de","page":"theme:threema/returns/de","quote":"Kontraproduktiv, denn der Empfänger kann die Textverarbeitung mitlesen.","rating":2,"review_date":"2026-01-08","source":"Apple App Store","source_url":"https://apps.apple.com/de/app/id578665578?see-all=reviews","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (197f899fafda…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.