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.

“Großartig für schnelle Bearbeitungen unterwegs”
Google Play · 5/5 · 2026-07-08

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 2621946731

Proof data

Record hash (SHA-256): 0525d480090967c4dac23480ca180dfa74ae4d21eded0e8edd38b883ccfd159e
Signature (Ed25519, base64): xaYVd5um4n+Qj0K+w+rA0nMV+xejkFb+550Y29uW5FWAJpcO05+dfCWOZefzcZfxtN5floNXGYR7/hCgB7JNDQ==
Merkle root: 3dfdf7381c8d7ad52c2e382f4e16b6f321af764e7eaa340297113fa50b9a0792
Merkle path: ["052197f89201f072f9324568b8daa618a6e59fa28e2b8f2bff441bc2f889a19a","87820e002e88d46eadb1288bc24c44f7f4475857a57653946ec143b375fc14ba","ec162071db02eeefb12887e8edfb34eba9a7c30f9b4eec7b59d36b95a6a9f459","42a7864a29a1fa66bbb28aaba3bda3666f7b4af02e20681fbae146309985fd49","e7f7ae3f38fe5066f7a31a7c72b75a47c1d468d72679d24c7956f0c35732b9a1","69dff6c7241164094368a53f756e03855019da27a83060e2e882bbb1311b7f62","1bdab31aa9fc5419bd9ec082d01261ba59216049b5dd9e3cf4ec05626877108c","418eeaf95547ea57f40d701ec71825a0b2ab20fedba8df6f4408d9b05c08ada9","de10c1c6d56a419a95bfee17caa8a3e0fb298027873f261a85192934da08aa95","176dea7d73ae1429a68716088e41ff3920b0188db9d7995e37a97c08722199c4","a969e840d4de72a9205543e10906b676b72b32979189e08f13c86083e720650c","81f5340bb1c2a0054bdc2b1c036e86ac1d05247316c250aa07dd756a5b01354f","83e63a6d799b1ceb15f089aa785a41ce6f782296862900005501fb5bd92d886e","81acff1af3c2bfcaf656a4ff2b93eca8121fe44c1d5b5a4dbce370acad78d2b5","377cd45c8c0bf5fb2c54ade6d9c4a053bed5d007e1a30f5279132a3d565864ef"]
Anchored: 2026-08-28
Public log entry: search.sigstore.dev, log index 2621946731 · entry 108e9186e8c5677a0a42…
Expected log hash: ea07e2ac95e2432412286c8e9f169e876b2f38f9762d26c0a0ce3cc128edcf3c 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":"v1787893493942","kind":"published-quote","locale":"de","page":"brand:smallpdf","quote":"Großartig für schnelle Bearbeitungen unterwegs","rating":5,"review_date":"2026-07-08","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","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 (3dfdf7381c8d…), 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.