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.

“fühle ich mich mit Threema deutlich wohler”

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 3140627354

Proof data

Record hash (SHA-256)

15a71ab8b343c1c52afbfd18e52775f32b5267e1d799276e3a89ea29478edf9f

Signature (Ed25519, base64)

ANZlFfvkGplQrgX7uYP5tMQu2fsM9naVDj0QajBEhivNH7Li6pboJPke1y8sGI+bMLiawY0FYPQzOfmmevc6BQ==

Merkle root

7e5597bd3c162c8b6d828ec7450367f642ce11ee386de414b88376dcbb621ae5

Merkle path

["15a653c0c9a532f78942b8299b3330fb1e653cb10b7d12471b09794f12506d6a","5f7f608f70355d19b5b1d726455490e77700e9fa87357abec44f71b3f39abfec","914a1701bff16d0be150bb65da75d6d6e515b43c9847ab15f9bb646f0ac55f29","14b559f40db4724c8c9849a9878ec23dbbd5c42b1a1dfbebbc2f5dab6abb96d7","38739f6ed309da0f73e14233edf18a97ed08486e1d1f826f2f6f77dfcc7212e9","31a5cd399f5e6fbd9a5a6fe486121ce82882199d207a427e59aaafe80541b8cf","b96a2481c43f46bb8d7d462c9d8f8208e8b24797a0e7316bf7563990288fca24","d0c7b79e454540f2d1b7fe05e54899a03ba2e5a9a2739c6eb60880301b979f8b","0e879de127a58161366a834e80dcdaa2f1a0e4b5cfd0f18e4de466b40c2ef893","7c9c3133631938e4ce776f1d317cf87a0d9d1848f4d6458b94016064a7228eb2","a63bc8de0119b3efaa7927ba592f57001910c515b6a44362d4adf6fe1a61f5cc","5b342c675b348d4a0b82d232b6f1d1714e25356f2be91df3e28c6411fce40f95","792fea8d115ac482e9fef70a7069e557f2efb1af634e94e47f08bdc3862e5a6a","acb249623400215550cc0881339acc244e91fde1fa89bf36124dd51a7bead968","76edfaff3d5907039be8c493f114c2f6ba10fbab7705dc7ab77a269ec79893bc"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3140627354 · entry 108e9186e8c5677acc98…

Expected log hash

82c9bd063e624267c60865e2416c3d714724e2c3b18c4773424cdf17232dd6f1 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":"v1791432333296","kind":"published-quote","locale":"de","page":"brand:threema","quote":"fühle ich mich mit Threema deutlich wohler","rating":5,"review_date":"2026-08-10","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 (7e5597bd3c16…), 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.