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.

“sehr praktische App”

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 3247778771

Proof data

Record hash (SHA-256)

6c0b0096aae2e40b91dc6039907181b3a9537af8662b10c91b87fd969aa0c7a4

Signature (Ed25519, base64)

MV9+G7xBPUi6B7Jrl6hleyepVjXD5pe0Gzha5+sDjek3sgrBiz5nhToJhiJYnPBCVGommbC/gt8V8Wf7c0UJBg==

Merkle root

85ce153ffacf452dbbce3fe1023cf2b1831b0714a52ddd4756cd932ee6118eca

Merkle path

["6c0fadbf30fa9cab388ac5ae2625bf0d1e421dc24af3b23212323cee7bf0b6e3","99b8f8d23add6e9f4025731afcc5e317d03a290bb52e1200e819e810c41cda6f","ce790b532196f658beef6563d9389b48228578a86a8bf38e76415d22afefea51","10379ed1de78b9e36249546ef658d73aee88de923f4d0ce0cda6b04359616b2d","08741cbf6a36a9d5ac2837a4f139afdd800b7473bc2f7e07cef09d0cedaa6482","2f7b09e50cf0b1ab17db438de4122c785a729fb4eb49d4b7b592923545dec79e","e9752b996f2a5b82aee43263de9109977e36fc654e23742d0a5dba1d058e8f1d","86fbb7f8297fb376631f5fd5df3d48e9b138a2523e9134062e18ee1950e5e8da","028d139a7c3375eda6dbcf9d600e5ed9c9c3d7c0c83812834a20525a072e32ff","469a5f4a249a68bd0233ce43cdcc8cac9e1e887562c75fe80b3703b7d3e43f26","a0881cea491b37fe52a2ed5c212614cf5a8874e12c9721351666705f59c60fb2","9130b907e3520872f9e09f533b62a073dc72611cb8947c460caa2a894da8e69e","d9295d43c18c39fbd2ff90fcea0047c124e9edaad5b7399cc50c0727dd3918f8","18e09dc9351f249cc916f25a12a638ff411aa18455e8056b5bab6122f75e7984"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3247778771 · entry 108e9186e8c5677a205f…

Expected log hash

d4527e154b8f284d35adc456cc8f260840ef237a57e84e3d79bf64cab7ccc901 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":"v1791943580112","kind":"published-quote","locale":"de","page":"brand:atupri","quote":"sehr praktische App","rating":5,"review_date":"2025-07-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.atupri.myatupri","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 (85ce153ffacf…), 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.