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've been using it for 3 years and it's generally good.”
Google Play · 4/5 · 2026-09-06

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): 20c48be573a264be7a8125dc47c6edc4027b39ff32234776440c332f6593f91e
Signature (Ed25519, base64): u7Pzc96lmPCjUMKgPPk7SWLRvLe+nhoe9MWUpyzrCsuLLcKlC6CDGFWSntiVHykPbdLDZvu8ekK6NAR79HeADg==
Merkle root: 4dc0bd79ba3e9442f7f1feb21f347e2f6fdbc72e99098aa5164776a6202654a8
Merkle path: ["20c5754d98a6061a353823349db5b70aed809ce5fd11f978cd8e3bbd0b36b477","df1b8fc735bdf48f84d48e347c454d5c5ea3757cc927f42b711a7e224d0db132","7a0cab0559660e9f2160f81e742511c9834049626ed549d215b0f945edb1e7f8","6f3fba5463ddd2922752fd3e3c0a539eb7e1c5cfe0111f8580bdee17bdc1b02c","0906ea7cebde2082a47e2a3e1bfc8d9dda9888f2dba5aa461d7ec2349b253df6","886a6c75276aa30d169acd6a22604a9c37e70d2d129403d87712c67338c678de","4ebc9bc88ca5962024df7d9e9dbb1a061a6baa78ba44018cb38cd663ebc92c6c","e632dae4ff5e0645ac70b5ae2efba2e767e5aa24b3abe80a0fe647588064ea34","b3cfe8146791de48807dea1dfccaa26c2a4ed55f2ce9a7bbfb86c46ed230afb9","61acc1a93e5aca96ba8072cae79c554b26836a3b149feb467472244e508df7d1","4133a15d2cb0da1b32c67b91b0de60f54c4f12d58d66ebb4c7b4893d1118f5ac","d610e3c549b439cfb5c1aabd8830cc14808b683b9751722225fbfdc069352079","b64868d5884e6ca103d8fa1886b59a755a471482d82618eec868304914b8e334","72f96e42060ae616ed33b8fd6ac687c1899623eaa8a351026bf33e2e7a041d34","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/durability/en","quote":"I've been using it for 3 years and it's generally good.","rating":4,"review_date":"2026-09-06","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.surfshark.vpnclient.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 (4dc0bd79ba3e…), 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.