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.

“Der Obulus, den ich damals entrichtet habe, ist es mir definitiv wert gewesen”
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 3162767972

Proof data

Record hash (SHA-256): 0a1ab6186c94acaf21443a5add2ae2112adf167485c0daaa2b1ea02bd78dbe2a
Signature (Ed25519, base64): WeWQaEryOrw/5G60CdBoDnvFOM+inn9++X+ec6GOkUHGZlWfn2EpXflvnUOZekD9fQZTjU3CkCTuuCXfBwu6Bg==
Merkle root: ea9653d48be6468e8b38c47d968f49528ccd17e229f6df41b5fdcfc232720ce1
Merkle path: ["0a1a00e805eefec6898aa1e43d9e7b32b4d86cd4e08e2dd337040f8b187d7c78","2a09d73b02f6c11e118d46e8c1626f5aee3c4ed0d06ecd117774f9ce1f85cdb3","0c7a074467edf0c63c8438a226ef4eb222394adeec09c899f58226745b9c7ddd","70cdb5510468f071a397a22ee23d0bcf22836908f8289414e67e068f102d3567","2e8a3c4f2f3294fdc59c122348d4d87f5b92dfcd0de5786470b7ded928e04b04","dd557f6f5aa96c681335551288affa8cfa9f9bd1d2fdfe13dfa0aee0789f25dc","baf96fee908bf369087070a803f0d54c4beb339ef5b8b3493cc08a2d6304653e","7f17c8216a69af014a8eae0f106bffa43e50273d8465be4237086c5f37c70ea8","b627944a84328cb8d0194934025a40c394aa227e3e864c8080f5a5db0a6d8fb7","85da76ccd7535d26f52f8f8b245c4d1753a5ace230678b77ad368c9912a2bcdc","8444d3d652e532fe6d6eb2594f1ca46e7d5ae67947fdaf899185da9628f2a5b8","87ddbb9bb9e3d21d9efd04f8b9dd1aa98d488bc655541de4e7541717605e5bd1","6cd34e3dfbc2bb436f1bb9314162b2979f7ca90ac38686f80fc39acf8dc29914","ce40f5d4a6c2a1f06b7e5ce375094f8c75556b02f37cd3d94ca98fa0a38a1e5e","142248530d485121153c09b780e08c6af592fdb4c333042d3cdd9e4160c6db55"]
Anchored: 2026-10-09
Public log entry: search.sigstore.dev, log index 3162767972 · entry 108e9186e8c5677a40b3…
Expected log hash: ea8f60b663262eef5ec0ce5a9fbc0ace913092ea47c37bdc70ac392578ea0c35 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":"v1791541525227","kind":"published-quote","locale":"de","page":"brand:threema","quote":"Der Obulus, den ich damals entrichtet habe, ist es mir definitiv wert gewesen","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 (ea9653d48be6…), 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.