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.

“dafür wird es fast jedes Jahr teurer”

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 2542342116

Proof data

Record hash (SHA-256)

6f9447adbac7d58dd94e07fbbc8572857c8dc497d702775194f047997422d58b

Signature (Ed25519, base64)

AVlcqO/UZAkJJn8VmA4va3eoR9kdz5Um1vuMWEB85juGXkaaVZtR8wC1oXzZitnmViLMh+9ECM4qH0oY9YjTAw==

Merkle root

13d851a0949e31431bfa3cb9a632b995c3cd1c62cfaf1eda783bd9224fc47725

Merkle path

["6f934bce93762ff416c1477b2e47f747b3d4ea1c34382a9879b73cccc1c0af95","02b8dc41cccd23ff9d08bf7379f972b382fd022cabc862f50422059a703153b7","834b7ae3c55111a96127547fff49e00dcb0355f27d0698715cc6301c23d1e483","7e72659edf446a0a796a5dec21bdfaa00aaa738e281668392939f673d4db5fc6","1e21459593abd0076e1e71ddbd629d45df55472dd729f9d9fb1f706a9e4d48de","46319afd8cb219c7b5f6f6a132f4b959b0e53603835edf2f0e15e243b9087b00","2ed5eca6bb0534186b603a61e19fd9a7753eaf9453f89025e3bb2e3d16ff46ff","6099ec5cad11549615abdd755905e59c8e2efeae9352462aad8ca319b0533c92","65d17512e64e8bf384c38abf5ff96dea4ff8eec1fa8fd04dac2fe305a8f491a6","b455d3ce0b55a624a867e3d1e8ddffbb053249c994556bb273c581a9fd8e3d1f","0d1f1ce3463b1e9393bdc31f0c940980c88d14045809f2215b8167e28faa0077","2e4cc4cc9f254585d592ce310b06ef87cd96eee21f75a167ff015e1181264220","a85948d94666cb760325015d876c34467e4e9a308fd736b88b45334d957c084f","8794a267e94c305c4d11faa8a55bb3d3523fb52e75ea5ecdc366a6e906d9f7ca","bc9aae2a90fd8d311435fb1459ac7953f7f2923aa1b697bb0b40101796e3503b"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2542342116 · entry 108e9186e8c5677a49dc…

Expected log hash

44bd329b5c5f42e4fbaaab1e9a27845aedd26351446bc96ba12b520a563b7433 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":"v1787279544668","kind":"published-quote","locale":"de","page":"theme:threema/price/de","quote":"dafür wird es fast jedes Jahr teurer","rating":1,"review_date":"2026-02-24","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 (13d851a0949e…), 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.