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.

“seit dem letzten Update schliesst die App ohne Vorwarnung oder Aktion meinerseits”

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 3138947147

Proof data

Record hash (SHA-256)

044d2285cc7e36570f6a5c5d9f6c677d0aac2e1be114ee2afeb118db3637e3b7

Signature (Ed25519, base64)

kcDQqN5Ylb1TynAYAo5/pygLMlvgxaTgpvpNKvaj5UqRU8X9jRl/pG3qHnZPGhtlQ+DeNzArtjipAjnLWaPkAQ==

Merkle root

1b26d1b85473caad1868633ec4c931eb970e81199eea87926818f3f1753af37b

Merkle path

["044f4f4f9e4d77a92d1f4341f9709444e1f4014cb2d1e35acdff7ae6a136e452","1417c37bf27dc50e3d95fa6b8c8874f700f0024c6542c26d01954d69c1ad8373","8b5b92778d20d855476fb53f3e3a7ef253020759027dfcd0c4bf830e087ec4ba","6a35efc20ae66b62de8fa5f3f690a79fdb571d1b1d69e9ba7730284b1eca1876","d9086f238a2aa84f74084de15cb5cdf949f58c6172f092c398fd578fb9908629","006f36f0710c821d5ac6f777146821ed40e805ecc81ae5adb9152938fab56217","1a2de4f05323ee2e2161747943cb2ad7a011bd968c28324b02ff1b8de0648ee9","71146fb536c3001a8e751339b18b895a7b0cec61c2c579524f33c2278c50a9bf","a8a8e402bf2339cd9ce5d9f453d89c28c1ab7c511de5d74caf97f589ba610872","1e46084c5e1182fc9ff2301dda9245f406b6edb90f80b58f94e01c9abfedd36c","e45310a34918d71c43bdbd6853bb8137d73d2a44578d93381efa385fa8aaa876","1761151c8eb8c9daba65277b5e4fb8c5367f51d034d40c853513bbdd9f94ee57","0a715bd63526388883fdeb099e9129563e4c22e6bfb87e7eb3c16d297d4dcf78","a52caabaaff23a9dd211857be614b6dbb651e724ed1f53485e9621733590c1c2","06054c91b82ccf7b99bb6b4fcb7c60afa97f93295e6829b75e5bf1efe9493e63"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3138947147 · entry 108e9186e8c5677a2712…

Expected log hash

8f66b765b7efcb11dcdcf57b81c46ed3317a5895f5b870638e23b76f1efbb2d5 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":"v1791425549743","kind":"published-quote","locale":"de","page":"brand:threema","quote":"seit dem letzten Update schliesst die App ohne Vorwarnung oder Aktion meinerseits","rating":3,"review_date":"2026-08-09","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (1b26d1b85473…), 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.