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.

“other apps support this feature only on laptop”
Google Play · 5/5 · 2026-08-07

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 2515282333

Proof data

Record hash (SHA-256): 63ed37a3da54881215c9c7c68ac209bb415613802fb7cc26c00cd557598e46ab
Signature (Ed25519, base64): 8xzL6FieTQclTjRpXEhMLGSFtOzSUfZaWiHe6Hz0xK68WKo0grB3CL3eL6vWIRH+8werZ4YSZuEOQAkP18SWAg==
Merkle root: ccae92ceb3dcfba104788424188fa34a8cb1410075ff6c1a21fa513e89f0c4fe
Merkle path: ["63e8a887edfc36bd6737022e90dd0cb37843e854e6fec66e0e42f2e1d7820cd8","7028be0fefffcb7a4edab773e1dbc2405dad0b4319dac3d4810a3520d3d83215","e8d407e5ee9234ebfc0a320457258a76a110afb219028ef56fd6ecfcd8f438d9","7c0c854b0eb5d689c44a2686d99bae036b759d987039f0f6449fc09c18eeaac6","4874a4d8b764648011276ae7cab5620c13a5e17ab13e9a4f5ca38a89bdbed6ea","664d4d50c6714ccacc48b3b36e784fd8db30f6de00914c2745346e5a5f639340","eefb3cb8d87917a93b7007a62631f76bb581d8b52f9cd026ede8b00490aa20f4","0f8e40a42eaec6046bf5b1b6da03e3ffe91b3017df7368bd1cee9175c3495fe8","d06ccf16bd2861736dd30559e07b596af3d3b9dd7441b558ab73ceb448892b6c","3da14d6d5ef2f9a78aaa0a547e03803482aac5ed4d6e35c5c1c9b248a23d55b0","c8f92c5483e1ed0d2ad2a19bb44ffbac4a439d62b0feee55b433d2a06330f826","34cac883526e693549080af2663a642191eb446b9634aa864485beeaf771fe87","e472864955793aaa2d19219057558dc2b6f5214abf252963626c32870bd50cf3","35f1bb6574fe343de1c8512e58fe7937cd8ac075d63d989ecbfbabdbaf4d6344","f73291c2ca924ce4b3764e4b6ff1da65a701069f04fad47c52c8b693a0ec7e41"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2515282333 · entry 108e9186e8c5677a6652…
Expected log hash: af455e73500113c158c8df9793eab703ff863c9c98fe38560752c9a1772810a8 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":"v1787139531268","kind":"published-quote","locale":"en","page":"theme:xodo/quality/en","quote":"other apps support this feature only on laptop","rating":5,"review_date":"2026-08-07","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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 (ccae92ceb3dc…), 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.