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.

“Bietet alle Funktionen, die ich brauche, und ist absolut zuverlässig”
Google Play · 5/5 · 2026-08-02

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 3140475820

Proof data

Record hash (SHA-256): 215df70ac741afcd0640780bf824f3f2257cd5a90f6a2d2ad010e4f4daf8c858
Signature (Ed25519, base64): fxAYCUh6E47ulHYYUmq6h+oBOi3qcP9Qbx2ZeQPI8DwmnFaOjV//anBXTZcO2QbpGZrEomtd/x3zBtig5eD2DA==
Merkle root: 52d6be1abed15ebd0724a0e1a493d5805e1ea49ddcaf8e9e5584928cd3e4d759
Merkle path: ["215d4a8f818ef4c959d13598e66360b9ddebebcfc7b7aa164e170a06f9c537cf","7a061ef7e0b3bbcab30cc86e10c0d58f203da12ad85813660c76b02382b1c87f","2e80e7dd0149769c84e6c0274b36adc6d041166e81c144134861d7b71b7100e6","8233cd31e75e68465b4f8a7243b1550ed40e63d95153c874dd600e5fb29c8ad9","ffccb893f4bb78582298caa520edc0efbef102b3863c4675cb12171be49f94a3","66e331562e3a495e14bf0658366f64a78d897907494ed4fb58408af7e04509f4","9475d85796485c4dec33fedd0b72aeb0c88f46cd5d06a62ca5bba66451fcd323","f6b91ae43852a7f591e58e9e2d41addc76349022563038aea8cefe88f46c2554","47a80d27fb7cedf325b4c3f62783bdd44d22a95554d0f8627b546254101a6008","2709007dd13f460c6e4f2ad55b1dde693858399154b34196655e7b17681e7397","a437720993ec4985609856ae1c85cbcd5c53dbc31d843b17c065f80b440d470c","5b7aba07a854e6a63765c93fc2c2098355f0ab59d7b4659a94baac072cc8e639","7d5e1a3da5381843d312196fd4a9f69dbe86b152542df1be09d403d47d5e49c4","71d5ef7f970539b9a82546e0bdc1b1069245bf71351875f786a78e5550da4e15","b72fcc24171828b3fdfff6be65bb433d37b8e51a187739d27a216a784d84cf36"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3140475820 · entry 108e9186e8c5677a78c2…
Expected log hash: bb68bef30792bf00f645df162a48943f770bc3f026216a44dedb4651c8ac0917 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":"v1791431489246","kind":"published-quote","locale":"de","page":"brand:threema","quote":"Bietet alle Funktionen, die ich brauche, und ist absolut zuverlässig","rating":5,"review_date":"2026-08-02","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 (52d6be1abed1…), 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.