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.

“Good application”
Google Play · 5/5 · 2026-08-13

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 2671517691

Proof data

Record hash (SHA-256): 09304adba04d67122a02c8796117e9fc9cda3fbd11dfc90cda1b0875b0b51891
Signature (Ed25519, base64): Didu8QwKBGMZp9cM0Qj5/zDf3oTrG3rRUhPxFBasuK+awwfqsI/PcAUwmDw51RGppneZRQ3+EQREneHb5XXhDQ==
Merkle root: beebb1e90fe7e67e33cbec0f03b99eb76d51091b0320624790586a3cdacfd28a
Merkle path: ["092e4ed7457733082d68e89dd6c1f5680f700023cea54f07339071836f5ecf6d","050d4b344650cdd25ca92676a81b696671bb47309cec737db565dcfab7a9e78f","d3e389a4cf8d5148d877b50d83f094d857b743fc0a41e684dfea1707f89049e7","f7467ac4b1f2877a9393fa04d6871b4f9185ec49a8db44be039b0cfee50e0318","47099cd52029fec02317244bebbe6bd45e2dd52e9f291a7ed59ad6d6cbe920c2","0b8638e23a826de0b7052cce8ad0c7f2da729b52d0127436bb3eaffdeda0dbe4","95e2899b6bc085b4a3bf70d5e952a54e54e34921692b2fcbdcff91db3db8fa52","93f1ac9cfbc032fdaf7094f5edc069b63819682033631eed22925718e356c97b","4401fc52fab05c80fa574969038bcbc858b7a46487c8f7b08a57aa8b02f76291","aabdd3cefe6be094cdc384151b18b0a400c0117434bf84c612d21ae141ab060a","be1d18f82847cc6f394066f4034b382d5d773f28b4ab8ca255e07c10bad150a0","73b6c01d202cade9897c4cde5230278699ef70c2f92ebdf509b47e3fb229b784","19513067f8bed92dd7049fed420106f7c62159c37086a1108cbdae0ca7dc379b","8e83ff51c482865a520be89d3588d4953cd4ef6526700cb062f0cfe87ac941c4","59e1d7599efc1b651191f22a2d0a899f2a3b0ab0131905b8aa9a10b3a6f59e7d"]
Anchored: 2026-09-01
Public log entry: search.sigstore.dev, log index 2671517691 · entry 108e9186e8c5677ae4c6…
Expected log hash: 207971f16b8b3b4c1e6f63e8e9291188fb84b37111ae3e0c78101499642ca382 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":"v1788236415966","kind":"published-quote","locale":"en","page":"product:proton/proton-vpn/en","quote":"Good application","rating":5,"review_date":"2026-08-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonvpn.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 (beebb1e90fe7…), 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.