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”
Google Play · 5/5 · 2026-08-10

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 2514750008

Proof data

Record hash (SHA-256): 60c5f0d1132edb9495249fff2781a0807215fa5b9218254120792a3525b4ec78
Signature (Ed25519, base64): 55/Kysz1/j5ndTv9+I7HNfAOlBT17Y+G3q9ypOK/WygR7pes+bTzuBw2TEnTLWt6bRFaWhswjPVgAOSZzMBlBQ==
Merkle root: 1f4f3b5edaf264bc6a00193653378e6f11cdf7d052ca5b778d915c1c21c7403d
Merkle path: ["60c5b1f980e57213068719bf12cfa208261448b33fff89c72596c597c5117ccb","ab181eb43c8621ec91b581b9f00c359664ce44c1cd2f7b565d0a71f4d9842c14","4468235abcfb08dcd51cec07a9583311f138e4e952d29271470e9aa9174e08b8","5cd93390a10585f9bb8fb185b78b092b5904ffabb6fb8180a9a174b58a2c6f6b","b9a675a99aabec18845156060d7a43820978d10eee0e3db9e52d51a39fc90cbe","3033d5e61b4e2577ae1d0183ee69c507475a05261e047ba4cd4c7a562b2d31b1","7681c479d0145279032f329a358d79a6bc4e59d5117f588df9acbbdd5e7038ca","e67264f0a95e1d024aec729d7f45076765f9b4f10dbef9db7f2742366a264263","7846a347184a1c96fa45e99e6b1a9faa4293567766b94224405a4ae3f73ca02c","0c38c4ea05d6b40835bfe660d852a5b7fd6d4335a4c12677cca193fbed57ce60","31ca3beab8917d00b5928b224a008434e487ebd98871385f9fd1304edcf4c021","76314edfdf88e7e9b8d1b83120396a0b82e336f95ea9a9f8e107cda76d7f1a75","262a9f81238583e2cd1857070930778ca81e80099af74b7a470c955d877ca1b0","fc5a80f8a33a91194ac04bb68228972904c735c88173cb742b33f0dc7c73d75a","354ad39e35fba32f932ca084b3a174e4cb81b7aabf68001f138a9a4088e307bc"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514750008 · entry 108e9186e8c5677a7ac2…
Expected log hash: 72d3f466bc589a4186e04430bc1133fbed10c2c1049384c2fe15c1cad3406981 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":"v1787133679631","kind":"published-quote","locale":"de","page":"theme:threema/quality/de","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

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 (1f4f3b5edaf2…), 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.