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 paid for the full month and it only let me use it once.”

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 3668680919

Proof data

Record hash (SHA-256)

09d006c22614691572b6ee670bb7c1a30b45c2bad813c4140f72003899b9423a

Signature (Ed25519, base64)

NH3MPn455t+a92vF7tgDD5MtXFctSgfnwYyhNb46oZtPw1vCZjXjaw0WY6pasG46A5ZIKkwHQP3gyUnrTmpbBQ==

Merkle root

2722cbf3688f456d398c2c349c50045e96cda26d0251a390f403bba716d64c3b

Merkle path

["09c04a47c03815fb0dfba157a8ca36b4776d840262ecd393c41feb9b2b32bf78","3a68306daf155a43e522f24fefa3e7a0e92ccd714a97e71162622cbfe7071e27","1774b83819012d1f88811829fc6bb5a6425936d3806415e98da1ae48b8abccf2","47e6b78b63a6b8d0f98396c4bb1a5b4e270ef78fa40df905bddc892ecea06260","a963dedb17e4f32ae29bdcb4b1916b0a1bdb5c824c9a2047b1708815db548cdb","fb9773cba6999b6bd03ed68521a375389beb5803a7fab21968b4d65385f5b633","ad826a877060ef02f16e9f2204101b80fd58a5d1166f006d94d8ca6f79a91c4a","2a82918207b68e11cba74dc01982af87aced058d1e5e33fa8b72cd90f38f186e","385e114f430f090f46cbec76fb954c21a541b29f7dd429a35a202229e2e9fa7d","e371b4e731cfddd5e7d5600b642cff649fad0301124bf7b072b7d623903ac5cc","4af332339a39e6ea76d62ed99c46c31598919e13693263cf6d909d061d8efddb","937ccf716598c310ad94912d78036fdd767f36111c011e345664249121f46a8f","e17aefbd7b422ad270c6969478edd518eb38d3eedab10292a53aa045165a0e2f"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3668680919 · entry 108e9186e8c5677a7c55…

Expected log hash

b9da8ea83055b2674fdcca0c2d48e6dc1984e46d36af8cf72ce2f4d2b7fd0005 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":"v1793706705310","kind":"published-quote","locale":"en","page":"brand:proton","quote":"I paid for the full month and it only let me use it once.","rating":1,"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

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 (2722cbf3688f…), 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.