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.

“Registration as a new user is impossible.”

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 2789279696

Proof data

Record hash (SHA-256)

41b167c86b1ed087874c0f432e1b41d94d664d383ab7a5f8fd9ec3fabe76dede

Signature (Ed25519, base64)

4QHspgtYt/x0Q8g5A6/avYcwYlgYvl2/uYcSFIjxYw4T2d8SujIVku12W97I+Wge/eyGK8WV0DEs3+J7evjmCw==

Merkle root

97eb1062a862b99998bef0a84476eb3c3812bb77c2cb927f4fd2933b59da9e3d

Merkle path

["41aff6e06365e11d9465407b4edcd21f09ee14d91f00429b79deebadf61e3794","dfd6b046f1197400cf08835bbe40e8729eab59067a48e5d99eafb495ef16791b","adcee276c7e6a6a3a4ee2e7a2eaea8164c036774dab20c0f26afc2b7b532fdfc","6c2389f47a9bd9c5d14499283e38a1007e46d38f5d259960a4e4cb6c2a67985f","571ff5162c336f3cb517fbf74f1bdfba24f0b57ba8925412d5f563d16f52fba5","1efd1c3b6f39f7f56af467f3b18e8b8d741bac091d98e2e516140053091f1688","113988fa173c7638a4847e443fca1badd84e6551fae51331a29878277a8371d6","c46ec18335b12249ec0d3316f7bda4a56999cd821b066c4039416b1185d0e94a","8f7f0a80575eb112cc8d499dcd3d7c659022c1cee6d246122918fdeb595548c4","6449754c291daef3c8450e5e815fc507e421e240c9ed6a98d427e6038baa5928","4751a18a0ef2d274921212069f9f2b5290e43a95a5cae6a6ab4386457522e968","aa7c727744c972cb66fba1d64eea69090f0779e70821de9cee298fb3fcfb9463","b2cde2091952330dc6d7773f9467df58d2e8463851174cad44d4f743c8f8617f","a9559f2ca8536f2c18bf059f3f0099d62235a93ac35dc17b09967d392b72be7f","01242865574478f13dcf9d888236d7a907264abdb87f360db7db06de0945075a"]

Anchored

2026-09-11

Public log entry

search.sigstore.dev, log index 2789279696 · entry 108e9186e8c5677a3885…

Expected log hash

05c7009ecf7ce5cf315c252c2a1dd135e64989a02cacdaaa3c5a87412a2e921c 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":"v1789017464005","kind":"published-quote","locale":"en","page":"theme:fastmail/ordering/en","quote":"Registration as a new user is impossible.","rating":1,"review_date":"2026-07-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.fastmail.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 (97eb1062a862…), 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.