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 thinking of purchasing a subscription from you soon”
Google Play · 5/5 · 2026-08-06

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 2670402210

Proof data

Record hash (SHA-256): 0d02d3ad7696688467c8fdff8cb3c149e22c154298ee4484b3a1a6fb2e3a8b3e
Signature (Ed25519, base64): z23Ebxy4Qtm+pD4xvHQF10gbC9lENUsopmq4/BHsDXEtyeKUIaQkEKd0GW1yms9F1v66mjoBduCjsr93IihuDg==
Merkle root: 70a672ba4f99febc4973332b6c2cf94172d87101aca638fdfd56ae3131b117da
Merkle path: ["0d01ff750729de24b1e7efee28e4bb69eb7f469d3a6ac37d1f154626b6052904","ae5815911ab9ce6a5fb6ecc9912ca541b78b2bd3e294bc79ea1e29d2220f8417","da063edc39c1b16126a6f22ae2210ad76f41bec7e1c13883d15636f497cf5673","2f906b976b2a8e7855bd8dd5f94adffbbddece36afcdb5cc7a74d15fc623d70c","d075c6cba2caeb281d46fd179c27df3ab30181158068dbba73eac5886957c007","21750d4d90b783d1a40415e110332de6e782a03630d6465d75e000a7cea20cbc","e10786f1daaf7e3dea1a4382c391bfc06ff64867974b6f0b39a7819effa03722","717bc047d0a85357119af606e7e66e62287cae88768cc830ca0d8ae499d14ac1","14505f07c4779f75c17b915170aaeb9f37f5d93e351012308be4fff8c15232e3","bbdfa00b8dfe9332d2e3d35a1c407474917e1e6e50f81a129750534c3ff6944d","d979566f60af4d00404394584d79d20ddb23dca9cfcf012923afbdd8cdcf5dcf","4c04d3fee6657409c8b6ad68998dd9bfb46486136283728def3f1ddbcf40a7d3","87f61d26057d4fb4f6a740a063ce88db7759266bed7950e950bbccf64bfb6be6","1f37dc6912cfdc60064656f6b3b1ac7b51a18eea41a11061f5457370784c1545","c66ddd9e0c503da25c55afd584b26557c7acbabc25078f9f7593d3776356303a"]
Anchored: 2026-09-01
Public log entry: search.sigstore.dev, log index 2670402210 · entry 108e9186e8c5677aa13d…
Expected log hash: 4c67c3cc128b94bdb5d524d39c2018621ea5c6ac22722b8aaf21a3d775248c87 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":"v1788228248765","kind":"published-quote","locale":"en","page":"subtheme:proton/ordering/free-plan-upgrades/en","quote":"I am thinking of purchasing a subscription from you soon","rating":5,"review_date":"2026-08-06","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.android","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 (70a672ba4f99…), 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.