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.

“Very good email manager with all the necessary features.”
Google Play · 4/5 · 2026-08-12

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 2681318538

Proof data

Record hash (SHA-256): 123e121ca13c82308e939ddfbb11a9734d51462105471196648209bba7211637
Signature (Ed25519, base64): J1X7Vvm8tXJk9K6Jh5STOg8Iw5brylNfNHaZQNpf4nbn/Bh2LETE2IhFBN+EPhBZqLtbQGBx5gQ33nd2GaMUCw==
Merkle root: 80545feed588a969110bcd2c8e526c8c2e400cad7348c7872c323a1674d2355a
Merkle path: ["123f773958a271ff44beb0034b941767f61d1a06cd7e6144ddcd2d5865b59148","82badaa43d5bdbcb5d2b6763f197c49ae4e967a12f82c26743fd056dc52372f6","ab4d0c2d9bccc8a6fee2cc17008b6ea96472586e932dc337bb0eeee38b4274c9","3cd6dfccbbc6da9f38ffcd89be7b6fbcb38e61ccd1e3b2dcd0be1eb46db5ee01","0afc10eebbb41c40f75c59d6765b24f1c4b9f9ba6209ce33565bdd436399d773","20f890729cced7dafe05dd637a3ad83940f485465a44a37ba1e279b7e9002b84","9ab3ac00f29784d22cb284792c419ece7a33c3a7501a511980a2dd664a5aad5b","c65c0cdc6b670b31a56ccc2da4d2df7b2cf0696d780f645939abe0c0930c13fa","7b1b593169abab66b0d674949e6ce472a8f7667758e1f9414045e26b381027b5","9ddd17bdce6ab5e6ab87867a5a97fa0018467a5b1f9cb73d7be8e7e87d757285","37981614f0ed279c371bfa005ef160504923efac9093e01ab20c3da0c1d9507f","0ca1719d1668d120a6fce323cc79e9d42ad7abb5c9a5dac5c512164c0396f635","cf85b24fc1eda5aee2e6660fb94d01e1afb915d56f864de60a3987cc95b2cea1","8378d9d6ade0d6214a847a4a8145a9f89a0810e29d8d29962807c9aaac17e271","fca9ab6e6247b2eeb89a8619f295121cacecd7391ef0e06251791813430b969a"]
Anchored: 2026-09-01
Public log entry: search.sigstore.dev, log index 2681318538 · entry 108e9186e8c5677a4bab…
Expected log hash: 663cb0c78a61cc964eb6f0e00407fec6844129fb0623d2ac072b7b2e4274054b 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":"v1788302168109","kind":"published-quote","locale":"en","page":"product:proton/proton-mail/en","quote":"Very good email manager with all the necessary features.","rating":4,"review_date":"2026-08-12","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 (80545feed588…), 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.