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.

“My smartphone slows down when I install Surfshark”
Google Play · 1/5 · 2026-02-05

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): 2b2904a70071664d2aabcff2c2d86e9a0e9b6f428714a39ab34d95c56fe51c80
Signature (Ed25519, base64): FGGBtq0xavbB7wxixfsq1PG50uFdwttowWIRj551ao8sn69V9BIWjbwLhpBC4GEOdxwO6K5AwAtATlikGpC3Cw==
Merkle root: 4dc0bd79ba3e9442f7f1feb21f347e2f6fdbc72e99098aa5164776a6202654a8
Merkle path: ["2b2a01c4a72bfe7e120a697e303753b536a98d82d77a7de91ae64bdfff79ac67","374e383b7a36f4b75e7aa75b900a0568ad6216daa5dadffe3e068b52f640b8a4","da474ab540e3f65a6da09f6fc0a5d8a36a964e59dabd2afd3ba99185dda2c05a","907347e52bab841584d6b5f21bd85efbf997100855a3aaab9c58447c127123d7","637344b23c8d00b28af59a4e256145e2e7397f85acb5436f0efea0b9db6889f6","c6080e5385b7e63227d000ef5b69a43793df45cc6d3a214489523de73f42fec6","35c69447492779bfe80e698470d87ca27621d18cba085919c00f69e3461f8e16","ef5dc44abc7aa4753149e9d5d5d4b945f912cd76fb6ac613e2a5d11d558c49ed","564c1858abd70847deb655009683f0aadaf60bc674959e362527740180e4e0c9","af881b4e5e49f49abee42610c8929e054194ccd8c4de89e2892d32862e0f3b18","dd9a2b0b97702237aa58eb2e839b17a980432dc29845c7fab4d204cc87f50048","cdc9b547a66b32bd7e3dfe1dc71a93d8d8fc3b198c1af0cc5d7f17b576402dde","aafc4d7abd1fbd48f01758db3e1a1278331dd8c09b348c20be15802d81136ee9","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":"subtheme:surfshark/quality/slow-speeds/en","quote":"My smartphone slows down when I install Surfshark","rating":1,"review_date":"2026-02-05","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.