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.

“funktioniert sehr gut und schnell”
Google Play · 5/5 · 2026-07-29

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 2514446349

Proof data

Record hash (SHA-256): 6086202abebdaf882602e9432ab81755926c86bbb5837413595447e281676492
Signature (Ed25519, base64): c9mO59oGDFQJaIKQHIcptcYXvUY++rfEERJbYrD/hyfLZSxGBg437WYMa7Dz4SZGBwQkSi/0/cx6rWWG0yDKBQ==
Merkle root: 3030a3ea5b39192cafd732e0b397cfa387f40a2253f2715cd6a4d9d218dba468
Merkle path: ["60872e42030f55e95103ca1e75d35a6bc7ba526153a3f63a969d9e7fd658b808","b8c5f9d06f73d7becddebb72fab1c2096357898d371e07e16e2bae11ef6643d1","9438ccccdbecf36d3921838f6cda7f7f92cea97e7adeb7dca5d904bf91012d65","10ffd2399de7a03541e7b29960d25eed4a314265b09766a7389ffaaaa2304aeb","510c3a7dc004f9c9f9620fc564f09558894100b1ca64cf76e6d8ae17ed21e944","abe8b870622f54eb64fd6aaa085b38d303b302075f5e275d01135260c5dc54e5","54b2d0b8689d0bab0bff4a78a6d353ec99d4182d83ddbfde9ef73b85700c0398","1d93829ddcd0d92d27206ccd6eaaa5a846047116db66e4ba598d803f8dd3a7eb","398f1e8d5655578edb941e67a3f9ac7e95dbe1948c9de1b6abd426677a349c38","73fe595fbc02237a5a42892bab174aba14081c51477cf88cff1d6c3ebf9a62d8","490fc300bb843ba225af23ffd7f081dfd98b63f6c5ab625aeff242372f46265a","0f257034541900399484a35ad33dd1abeb8d1b7611cbc2bc7417a6638e5edf50","e19c6eff657ea7d0ede33010cd88abb8a9e01c28c7b3ec485b702f7e37c24957","fa236bbf83f61e60a6b63c899666e78098c5b5cc95b126245f16085503380c3a","559fcf7745d7b07c729ccd960c18a4660eed501cde8669d27c3235203d371b20"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514446349 · entry 108e9186e8c5677af084…
Expected log hash: 901e903dca7784cbcc0b860ca8f2ae684aa8c7d566efb3654aface7bae409ccd 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":"v1787128322154","kind":"published-quote","locale":"de","page":"theme:threema/quality/de","quote":"funktioniert sehr gut und schnell","rating":5,"review_date":"2026-07-29","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (3030a3ea5b39…), 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.