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.

“Simply put this reader is my 'go to'!”
Google Play · 5/5 · 2026-08-05

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 2544236959

Proof data

Record hash (SHA-256): 75d54817934b3710ff274b57b9aa9459932f1ca7ea06cdacdd66de907719a414
Signature (Ed25519, base64): 3s7m+pGjHbH2caaoMq545Lj/8P7jjHAAl13hHmxdUZ5w2YCxQSa++UC2Y2MJKGV/oI/2+sX4Fr7eWNsewCcABQ==
Merkle root: cc942239c46f13b1af6cdba0960a24a6cb62e7a7a462aae1e8126c0182dbffc3
Merkle path: ["75d4db711da9999539a62cf5a3367c2f176e4c7b843f9186f5beede050fe1468","63256c387dc267b0ef94e96e75b9a2844dceec9803c7718ee2bc4f692a2f98a2","84048a98856134a0a81414668eca8a77e71bea4ec870060e5a51195a31fbd674","ca7f5072b8c42b867419deee0ac0036e014db775a383dc360e61ca907ce27dcd","f97527d4f1cc59adfd31ad428ffd839180601a2a1036e8fe1b9788b5bb9e9fd0","813fb38c3de9aaf1e522dcf5ab778cfabadc5b58b7ca5c3ed4f99896042883fe","97c08a75af466b587e883d79f8231797363eb367a428d06ec685d339cd993cb0","8249b884b7d0bdc07614b8f8206608e7b9e192887706c1d1040bae81871e2e8f","fdc9276077201011e73604f28b4251b7d7b623c3cb608ba3daa8c27ad6e403ae","f8d4030f960d7a3a750f58c23c090e63a47d9ed7d6dd75a530936cc7be3b6cac","16be2bf493056b5cbce46fc3d93b6d02c4fa603522eb13a168dd2ff3fcf8e93d","ef4283675581cca5df9a62291fbad7119a81aefeacb40c5ce98e9cfd5b187b88","775dd8d6e832b06f7b7ef77a85216bb9af7105f607664e433fc30abab21ec3fe","9a1346831517d7bfe15c9cafe704fcdd7e5320eb2bcb608a630afaaba7d67d2d","f25e568e6bd90a5619f6d6d975016290629a8afed06b80200730e4e12fb2d1bc"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2544236959 · entry 108e9186e8c5677a0341…
Expected log hash: c82e13ba2a716d66def44df55ff50c2e9db35da204570a7fd5650a8bc2702db2 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":"v1787290890795","kind":"published-quote","locale":"de","page":"theme:acrobat/quality/de","quote":"Simply put this reader is my 'go to'!","rating":5,"review_date":"2026-08-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.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 (cc942239c46f…), 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.