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.

“It is impossible to enter a new activation code for renewal.”

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 2776103867

Proof data

Record hash (SHA-256)

a83b1aa172154fc6efa7342c5e0f16b8e2d1eac771bde1ad6715e4428ae4e7c1

Signature (Ed25519, base64)

YzsIjk0U8JH1WAAAwqg+0fIxnFxh0+psNraFnUqv91NvaFAqdUoGguUgCKUPyINAfF8GatHoVWushq87Xg1nCQ==

Merkle root

4dc0bd79ba3e9442f7f1feb21f347e2f6fdbc72e99098aa5164776a6202654a8

Merkle path

["a83c265b78d0eb35b27a7606bfe36694621ecd457dda33cd7777129b6177a38d","1b183287b67d8c9e202856268bf2c221b48ab5cf66a643784864c833d69d587b","f4b301137cd534ea9d967427bbfd864be019504690be295f73549f7fdc47478c","57fe72e8e753495f378939cdccd4fe060f6d7a6b5c8bd6e2a1ed3c876728af39","a5f7c995f096a5153e63bc2ac0ffbbcb876fee36b339cf93def39a518989dcf8","bcf76d88546d4e0eb94df6106df7edf45c886873c449c312dabbea514a675b49","433f82c577821e89918b311d0ccdd83e65533155dbad32a0659c5ca815afa7d4","97ad2f237643c83279767591d8759fd478b0f8506dc7ab81376bc2e67c215ff9","07a17d704073dc991e84e8fc575d540d747add92bee62f9bee9270ed472c54ed","953be7a1a1f37693f6f5ee1a28afea851618b5020435f6c44de67146daf04e36","af89a25bce2ed4803f1b5fd15dbc28d6876f2881f010749a95981429091081ba","24e450961210e2cdc5fdcdec60b2324d5b3e7e704d00d92186e8f725bb0670d2","e3a1de018ae2658686c8ef0556fbf43b0147585a01189da83c1927e13f8542e0","d3f9820ef177ffb6742d93ecece273e46037aa87afa8ee19fc7a0b34f6ac592a","e60c2274998b06992577796b6abe86bec144203fe960878f7951a3ae12c9e532"]

Anchored

2026-09-10

Public log entry

search.sigstore.dev, log index 2776103867 · entry 108e9186e8c5677acd4f…

Expected log hash

2498329b7eaf275d309293dfbac35d05dfb8a55c65956add8448561c05945f28 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":"v1788848066028","kind":"published-quote","locale":"en","page":"theme:surfshark/ordering/en","quote":"It is impossible to enter a new activation code for renewal.","rating":1,"review_date":"2026-09-01","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.surfshark.vpnclient.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 (4dc0bd79ba3e…), 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.