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.

“bestehende Kontakte nicht mehr erkannt oder synchronisiert werden”

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 2514654467

Proof data

Record hash (SHA-256)

652df2dc661bf08613ca48a0f68a912ae2358bea0f2646128df908127861c069

Signature (Ed25519, base64)

oXhOyYIW57XK7S5Yy3/fwxmdPUH1lych0vhLNtBiZIdTAB0BQSKexnbJAQvz3v8RoXZSxN1p9mIzn1CWUxtADw==

Merkle root

2030d4ef17fc68fad1320305cf569e85a00baea931fba0d3ebe628cf9c90c35f

Merkle path

["652bf6deb99d74761f3e755ec2362678047da1c25f8e270ac776631990757a4b","a81d9349ad2edb351c1a43529b4a3ef5ebbf758137b8d0d3a499318aeba07404","7ee63627d369b0f92f2347fe590cc00a7174ab19cf47d7694a0d820199fffc86","2071f70bdf8a8c2bd8438dc23afea217072b6f714a0106c27823ea5dc2e2eec4","893714d026f618e93abb02496635f69c88d2f4ed41d865e02c124bd2c46a5fe6","7c58d62d638a0364784ed41f85237c43c1298ccbe6b043ed6071a6784bf6ebd2","cf72aef0ca88d12115c7e9f8e4de8dbb55177e383e50f16dd94ee5fe565ef85f","1b972654ead7382b9f4b3d4796e66f4b209ef7eb847eab90544011d762e2880d","0e20a728bc16ecbfde7a1b987fe651e24ecee2413d829b6069bc9e050c88dfe6","232129bc35ed7e19d7b109435f936dfb31d1b47602469de60abcc194bb9d7b6c","9ac7e8cd1087d31d05625119b520b1ef853f26da43148686f30e3d8acbd6a3b1","b5e26d43533a4d1b34d97519818e82aacb7ada756d4442b9f6734aea12f7f6bf","5e71e1e70b37a69afdfa58b6c1794925a5ef525370674594f74ea1403dc0aaab","22c95139cfdc78a2baa7a8e247bcf81329645beab990fc5e095abcbd46515e64","e362b663c2c1f5a93380a04a7aa41b42f4bafc7f870e85cf63803f76c744c486"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514654467 · entry 108e9186e8c5677a9253…

Expected log hash

ddd8d6dfa3771a4106292f7bec674337dc9649465b28b118bb17bfc2b8ff0a67 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":"v1787132872903","kind":"published-quote","locale":"de","page":"theme:threema/quality/de","quote":"bestehende Kontakte nicht mehr erkannt oder synchronisiert werden","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 (2030d4ef17fc…), 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.