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 am very satisfied.”
Google Play · 5/5 · 2026-09-19

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 3258717636

Proof data

Record hash (SHA-256): 47f2a9517c39b93a2a41230cc6b144fd1946884281cf339a9b904f4d7079c609
Signature (Ed25519, base64): Ts3ZHyUDxPoGdwQM/sykpXpssGBI6uWP6E2SndlfP3bxgN0tWVrNJoHwsKgARKvJtXXkTNGO6e5A/HSFdeHLCQ==
Merkle root: c1d49fab62e94ee1796f3eb15e1a21f856756e9a68ad117a17ae6c9694ffe1e9
Merkle path: ["47f46f3348d1a13678659418df6cd7dea634428c684342f91906ecaa20894772","6980478ad68e47126053325b463134af298232f76b7c4070d5dbad2412983434","c2ccadc41b6ee5f4e6abe0ded8786702fc5dd2bf7ff2054d5d61b6018b3497fa","b174df57f03c61aaf77fcfa3e80e964738903046ca28e21545c0b52de0cc069b","24e919ab4ec57e8882fe61345c93200535415a208fdd98a4c7c16d501da9bc17","2a475a6c017a90a9ed57c07b08498a81814285f7cef753c0c209c6117bfc4391","9938546ee011e03c38b8497b0944a3040bc0e222614a0cc8bc9d36769952987a","a6b42b5364d2840d9dfaf8a698397c5ebd3944070ac58f94461013b9778d279e","d51f39cccb72aa1ebfb6d44cb70fa2cd934894fcb0151d3b3d6921ea0d4c4f25","ed866abf8dca932aef8a0bb02181dc7f41d06dfed4b6c440b9c824e90aca5d68","710ab634f0fbac2e9432b0434033e6e979f94f32e8195b1327c14f872622319d","9596fe45b06313e9f5998895cbf556766fc4e5e93f892ca136b88ff88cbd99e0","856d9a6a3e94d695a98fa0bb5ce8d80e9fc70a3794652b53ea754ef3c0720b7a","436050ea3288f64644ca44d910bc166b737265d33885dda72495c78f7429279a"]
Anchored: 2026-10-15
Public log entry: search.sigstore.dev, log index 3258717636 · entry 108e9186e8c5677abf47…
Expected log hash: 30640a6c2a3bbbd5aa6e5244e634da7339a6d42d7209b3c3a5dde0fcd662474c 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":"v1792034121129","kind":"published-quote","locale":"en","page":"brand:zasta","quote":"I am very satisfied.","rating":5,"review_date":"2026-09-19","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","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 (c1d49fab62e9…), 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.