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.

“I also really like the app!”
Google Play · 5/5 · 2026-09-03

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 3240231023

Proof data

Record hash (SHA-256): 205f4653cf7456f4dd537a02dd20123451c3c40421a13727e29e38beba172347
Signature (Ed25519, base64): 6Pgt5obD3pI2lsO4+hp9gbRy2zrqCdlD0jFViCKyIJS6bjEoo/VYKTVljz9E6nCKUCRN3lYKtCHM7qCioYVxBA==
Merkle root: 888a38c73939ec95e6f226dbfb3637325026fcafc5a795aa4e227b811d6b2c84
Merkle path: ["2053358a3625bbd77da35b5f83362328ac16192c5c80e2825a44b48d376d7b69","3c40cac9509114dc8c1a09474a8318cde7704fa5f6e24cbf613476825c38e883","d68d513620258eb8ad476deb1c034693db4e8d715d6ec7e14a86fde122772b8d","9cfe070c07a242568a91035039368a0c49fc7e4e05b17b60665b33cc5452c999","926d7cce98c56e79ed083133935d04fe1a89ea7e542dff4b2c03b458dcb458ae","8ff8b3167b79405769859561e3977fa3424e54231d1e80076f6590632a28fb1e","90edb1abef353abd2e5aae99f92efa243d3ee05f9141130c35b9d4cd1e31a006","e07ea8a015a183b2cff42b283b1092f64ab9bcc763c21385eff2f26555c0e3cf","431d566b946fb028cff5abe69e490f700c4d59a5d58af9640ac49a02346e4885","a5fbf0c21b8acc6c3c93b6bd5ee7017305f498f525f0d5c731cdd805e90d8c42","36593ff6981142345d894360aba2045a8b70ebe4ed0dd9f3ba3c7292169f7244","062cbbfbeb4fd46f2079783d29fb5f6cef5c48e70dbb9c2980860cd1d92ebf74","410ad2e8ec6f218bef120c1cded3462a092f61baab59fee462fd9704d436d66b","f46648ad2fd9f2769b9fc0ba1c434d2040de67cbd8b7a61df7b7575cd5a9206a"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3240231023 · entry 108e9186e8c5677ac0ab…
Expected log hash: bc440cd3136178aee800fe49b9cf2e319542a645c9abbb8553c6ae1e354ce201 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":"v1791860805798","kind":"published-quote","locale":"en","page":"brand:tuta","quote":"I also really like the app!","rating":5,"review_date":"2026-09-03","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.tutao.calendar","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 (888a38c73939…), 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.