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 just can't even begin to describe how wonderful it is to be able to see so much of the message on my phone”
Google Play · 5/5 · 2025-05-06

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 3666748782

Proof data

Record hash (SHA-256): 25961b841347fdb5af8acd269bdb8151fadd3e4ee93ce5eb5e7327795f814c08
Signature (Ed25519, base64): 1dCrJ5J12K1gR8bDCb3FazO6x2EKbgGr8vBhWppb0nWxlRVJDjYbQSQ4hxJqd0UyhDOMJTf1bsFl68iJdzu9AA==
Merkle root: 9f3bf01edb9d597e26c01d8c9281f8ebd9083c8348fa27bf99e2d3d27a8b9c8c
Merkle path: ["2595f69e22cdf9efc47d4c1109b854034e157f141f3b64d2c8e9f78d7ef5800e","70b650c5eb2df1f10b4274b77dcf9a356bce4ab93d4260e984c1d8bab6890548","590af0d991f3b32e6fcf2f75ccad910b0d0d2a74c2a215beb539b54200acf431","e45eb39fbd9bef3f35947049db563d6aabcdc15c6b49713f07665f792e9bf950","1fad4f48bd7fc7cc84eca3a3141ab940252689128a7b9af3a791ea5719a60653","b80fb9917eb83f31613dcd634e2ff19207d9648220ca52e902cec39211ee0244","aec1237d11743509245325542e25d44531ab390ab4def9ad89310094d4ad286f","f9af687ecdae338a1d9c8c1560ba942b52ec059e16f12d361a26b57d4c4caaca","f5d9387ca0aac723d3221c1a815cdaba6e8eb374cb27388dfb3d67da66a05a21","db8e072c7a60c84d42900b6a2994436be7f9e76ad66cd0131efc7f288366f1bb","e57636c84311714eceec5b709d8e9da0d927aed2ce3e1ae58d85730ecbb2951c","9311e5bb0d47db2583c7dbd405f5122ce8db6d1193bd1174bd29dda5341d2dab","ccd3f6a502c459e3bafdbecf5a4380782b0a6666d918776f3c595a5cb05f3e9d"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3666748782 · entry 108e9186e8c5677aefa5…
Expected log hash: 5b49e28274358602b99f52ab121ad302428fe63b23ca19ecf9d795208846c99b 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":"v1793702050700","kind":"published-quote","locale":"en","page":"brand:fastmail","quote":"I just can't even begin to describe how wonderful it is to be able to see so much of the message on my phone","rating":5,"review_date":"2025-05-06","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.fastmail.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 (9f3bf01edb9d…), 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.