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 not able to subscribe ProtonVPN.”

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 3305112589

Proof data

Record hash (SHA-256)

0231dabecea863a042e2b1b58d53a39c42d4c275dd5c72e7a8e9a261f266195d

Signature (Ed25519, base64)

PgGsSETulcArek72k66QqYkHI3Gab7inkaB2Lw28RYtzW5IdOs0Shxgta5x6RINiwUwgGR8jbCrTlgE/AStXBg==

Merkle root

55117deb4ca8d37a678ae0a073fbce195c324ce5f9e871ef967256fc521a73a1

Merkle path

["02478a246228446be6432dd4420bf4c9f4c5f3c7176d887e9b40546a39b7e060","286ae766497cef0674e439ae45a2276451e28247b58ac2d37abaaf76d745ad9b","a95667303c2e33210d7de1389a0a8884c34da73c3341c14c0d1e10345de0a708","105547bcf18cc83e873caf1c274f424e80d27be946ec627852f8f100e6d7a00d","e43897b7df51288fb4eb31c80e6f8897d0be16faac426695469cc01dcbcdd3fb","ac20ffc6784d6dccd1a9b4a7819745f844616d5bfc8ac00065b189abf86d682b","5a07749cb5b5b97e4ce5ac1142ad610d581b42d7e17e2b8380d933a7191524a5","d34ed9a15f550aa0f58199659264240efcdfc64dea76abba1dc25f2aa8dfd5a3","385ce2efb228e690306a756bcfc63e7d0fcd2cbed3ffd84df8dbf4d1d798d158","48826a79717dece50393908c97ebca735ca8cd935189c60861605728b7ad4757","535b6abf2fb18dd8b74ad7937f857e29bb5e4346d9f2703c382f726f073ab41e","0748f9297c4c0a3720af131f4ce2567ebed633099d330f968f516c11a8f0d4a1","31d8e181a29f89115c8305b83331f09bbd2794984e0617d17f9e5a5ff069102d"]

Anchored

2026-10-18

Public log entry

search.sigstore.dev, log index 3305112589 · entry 108e9186e8c5677a5aab…

Expected log hash

c2e7db559e4d5e5fa814daad663a532ab12f6caeac67f681385f7a90ad7f4355 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":"v1792292562366","kind":"published-quote","locale":"en","page":"brand:proton","quote":"I am not able to subscribe ProtonVPN.","rating":1,"review_date":"2026-08-04","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonvpn.android","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 (55117deb4ca8…), 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.