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 2514541190

Proof data

Record hash (SHA-256): 6c479136b8c94ea03f097db5d0f12df6162ab4b3cb26609a198fe87a00856f7d
Signature (Ed25519, base64): WW+7ZeMJ3vk9H9ck+HZpUH8hm4oMkZPLG2FQcSzR9vQ8PGrtb5MybBS9C/nuOKKS1nk7c5XMgr6ljMT2kwENDg==
Merkle root: 6ddadcc7cc1bb0679f63a30d8a28a2a72e039950945f2d7276487dd5b703ff7b
Merkle path: ["6c48b966e095f1f5a0a170c227b0ba5075e6b1a00afbd97dfe5f0b1ad5d2c69a","bfa97432ce532a410fa2b8817162bc171554faa2e00a6016e339231f38054469","a3e1a510c962de224db70baa65103fe33779f1f97ceebe2ab2dee958408111a3","b2718ab680ddbcd3895fd30c12266cda9636705731a56151ac2a97b59c75a93e","140efd44ce6fa021c2ef13bb1da242bbc324ae42e001abc72c8f98c2d16ca1fc","8933d852ba1ec6471523d3fd9beaa034c0646cd57b4a24718f899ad90ab339f7","7119580fb85f2fd8801204ae6b34f8c63fda72e940fdea80ba868938d50c9db1","a631db688f3a56f1a28c2d17bf66bfad9c70cb6c1ecf2650d77c92f8fc447418","b55fb5397b08b0507f757511aee2f91092f1ab318cd117e7b262fd4408cd94d7","950bfbc83909a568305a039436eee6c2bc57663a1ee32ca5baaed68a6683bbcf","bbe3642a674f545a544a8a35b2e19722f9b0472a28f562f9cd797f956193c842","61840f7a5d70461f92580da92e37337fe6cfee6ec382e7c517a8242a9ebf8e2e","b7880ec0b6ca5b49f70739afc9c55901cfda1f2917f3bec65d879f03db700592","6c80934204cf6e9e7c67e4289ed571ca8ef594df18a56fa355d65497266fba72","052ac7d24dfc9659210f2718e5c7e6b2477f3dc364546bd6ed2bd5df9d14d7b0"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514541190 · entry 108e9186e8c5677acb65…
Expected log hash: adca5adcd6d3235cf084bc9b408d3e4d7742d07347957346ff2629f37429bf20 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":"v1787130614827","kind":"published-quote","locale":"de","page":"theme:threema/price/de","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 (6ddadcc7cc1b…), 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.