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.

“wenn das Gerät verloren oder kaputt geht, ist alles verloren”

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 2514496096

Proof data

Record hash (SHA-256)

73cb57a00516a2900420b811d0f2877e17808fe095bb23612b25b5c84e118417

Signature (Ed25519, base64)

YErA18j/b/kpARAOX1mzsz6SmEbOMDEzWNK8Damb958yB05B22HdtWVUu42GaP9reZayqeg9AxUrcMBxW6TSCw==

Merkle root

790984da83ec061260aa072fed7636f9dedf91964fe0be93d7a7a622b2b5a92c

Merkle path

["73c8c9d25e766a61ac338ab7838b4d849241c71bdb0e08f19498c1c29673e788","b7913120e462d86ff8aca8dfb00d3a35fe7529175f9ebbe6b13108515c1449a9","22ff3d746c25a5f264d94a4d17188f945959497757d67725ce812e23665451a1","eabbe0370d272a076420a74b4da065b8447023caadac06e6a1f2f439fc168112","a3bf0bf8c5cf15d476b6c4a3350cfd7ba802fb888e5099546b6dbfe08f18d70f","81cdfcde8b51e20b52cfaa2cbbe8c87036f465bbc73189494abf39b5b865ae1e","dc0adf2bdc99d8ad81199d7dfea445769b523c7171cbcd70aabed2b6f503783a","eb91f8086429fe2e12e6a3dc8ede0d6b48f553925b73ee663783843738c8bf0c","aeaf7cbbe276155d0dbdc9e09b1a00c65f49ec62bb6bb338a569b4b1571d1448","56063800812275c737e342c8d2886363b6dc0f8cb281ad1f3782b4d3e55fda61","a0fbbcf462ffc4886579e3dd0ceced43a9ce73cdecfadf6a763b154492128976","90f0a0e3211fc23b1e8db52b76383f6519eac469757414a3b9d5875619fb9c0d","6119aef4031d03205576aa94cf7a51dbc6eedfdd420d909f325579401c8abd0c","19cc354f6573191d4e7914f94cb811eea176897530d869ad83bfe3cb7fd5f206","c7feebd3045cc2c03d87ca1241b2d06259ffad35db645c59ca3c5ee2004a8947"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514496096 · entry 108e9186e8c5677aad27…

Expected log hash

5d2238ef768473286d75355f523ab94503f4ccd3d25e17e9efb265aa0f540183 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":"v1787129810322","kind":"published-quote","locale":"de","page":"theme:threema/durability/de","quote":"wenn das Gerät verloren oder kaputt geht, ist alles verloren","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 (790984da83ec…), 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.