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.

“They are also way too expensive”

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)

2e21606202500fec600029becf8665dc75a36337771ed8097beee6310e7bf524

Signature (Ed25519, base64)

vso/UePWLfAFzpj0L3iCkwoRkCMeUSrTwGIy4lHHQPWKQ+DfLxHbCc8N5TSvAPgVnw5d8MZk3aN2LmJ6CoPtCQ==

Merkle root

c1d49fab62e94ee1796f3eb15e1a21f856756e9a68ad117a17ae6c9694ffe1e9

Merkle path

["2e24e367fc7dc190cffe3950ae4007cc068b3e75ab41b10b3a11f58f52166ccb","ca1d04f179ed9c70225bc0171816905824dc05f8c8f65ebeb86e0b4d46049d20","746074a69907a29d14e93929d04c17340edf47b08df4500406ab047e903cca16","1e38f3edd7cfcb5e5436762dd401f5ced2585e55c9f6715987b969661af24496","a7eb62ab6b5d6936a491d91698d16e4c9712846a2d762bdee1f89927043af5ed","872346f96a3e6305e805d040e4b6a35ad0eff847623a7405d03c4770729b9a68","860a9d4a382df817a1f9dd8d801c79fdc410b141e41f7e1d2ab2e9fb8a366c49","88651a3555d3762c7be1507022a38fb6818f87e64371c0afb39824aa1b6726f2","066166fdc6abdbb9ff338999bda5db469f9a7bcf5dff4a212f389773c6c4a367","3e56fbcb8a8a4a49592f462055d9676d8061d2200a525396a3ad1e545134af69","d548028ef9025b3c22d524c1f1d85be654856c3ed276e6e4b719f445ffebfe9d","219bd599cfb89fbe7096defae6a66c994562ac0a422a5db43368bd9cf9789683","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":"They are also way too expensive","rating":1,"review_date":"2026-09-21","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. 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.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.