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.

“Ein Allrounder ohne viel Schnickschnack”
Google Play · 5/5 · 2026-05-15

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 2524810465

Proof data

Record hash (SHA-256): 67a91d9a9b5cd34e3d67e04812a187037b5728745ea23de382463b1c5ca3eb5f
Signature (Ed25519, base64): Gps07/656WZmbi/RqH50hBpz/5TFGaDKrudxa/l1dCZfkaI+tUxont4KfgVR/1PtovFcZMlMm0R+5UHz7fEQAQ==
Merkle root: 3e1c67438f658ba7fd015e6979c1bfd82d90efb0848cecbd4d902d6b2ed171d3
Merkle path: ["67a5f6613109259ac33638c2403a1168c429b03f5b1a938d0ba3ce7b3e011182","e45725eedae816cee5bf66d170e54f6b5a930bccca53b2c7baa723e064206194","06d6de0e95cd182b5e0444489d8134f933d17471d2df31e9d8169c09e60c2a94","8ee4cf1c1ff6ca52c71022fa559a995bf795cbe82e75b48a99ecadc203906d18","b1545f3e5e6c832ac3d0c153bcf96da93591abc88016b3a82c621c9ba871e72d","abe040963ea2bd58dd9bd477c909921d15c4e49447db2cc6ce1beaae9d4f87e6","2349b366073b54fc5696084567935bef32abe8e6b9db16d1a0200d5d299039dd","526c123a43e4a582264d26e275d08a7e5b531dca6d3edf37b3a218186476960f","8c7378729f2e518a7f13222c4cb0b1434a80606137dff6c990a3976061c0068a","bf2b134c4b3ee26d7270b71bc815a7dde124d0b28886904773b30ae213b0aa73","746854386f8f12bbd3256a032f840493051d001850691719276a200b1fe9063c","8795cc9548a27d4792f561ed0be236baf1443f07eafb28127c878d07543db8bb","985842e3b7b7b05d065d3478b9548322db9ef51189928c897e184837afc0a836","16ce5ef98bea97aaac8d473cbc69dd111bbc7f7387aea9596c8bffc373b8312d","db72b82118c1e08b77018004fa72584377d6eccdc4c75ec19bef6a78273f75c9"]
Anchored: 2026-08-20
Public log entry: search.sigstore.dev, log index 2524810465 · entry 108e9186e8c5677af074…
Expected log hash: 129b219cb6155ac24569a579c61e8fc9cc2d89305732944b8849d5e719dfd073 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":"v1787193927339","kind":"published-quote","locale":"de","page":"theme:xodo/quality/de","quote":"Ein Allrounder ohne viel Schnickschnack","rating":5,"review_date":"2026-05-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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 (3e1c67438f65…), 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.