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.

“Really a simple documents, pdf viewer and annotator.”
Google Play · 5/5 · 2026-05-06

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 3258859570

Proof data

Record hash (SHA-256): 16743ff48096fdc9b21254b64e5fb3b242c95215893ef3084dd837c9d20982de
Signature (Ed25519, base64): kh3m65Cac/evBwZoGYEwWSHf+HLHPPpaheKO2g+W0ZF/40A5Zgw0zbVdryEs7N8v3CFpJ49QzTDygLLECMgrCg==
Merkle root: ca3049e83faa90e23a8ee728d82960c74b9da8080000e4c92979853b767b75e4
Merkle path: ["167534a8bb2b2d64683cd7c9ac6cdaa906264c71c2c71245616ddc6ba8aac8ad","6c6fad12e2ac6e7e0fb49137b01915a967efaf991bcbded91ea1393f6c358a87","f4926f4476eb02c42382a37407ecbde1bcf9bc9af28b66fe3ab52afe67badc83","18c3163454c317730295b27eb3c91bdc5ddbe4ec290ea0781f68f5cb28a1da5e","bbc3ccf3dac2fe25b018fc13fa1503b4ffe5df89bae44834139a601a3b86c116","e4c736fa2840477b325cf88f42108f8ef4f418bcd4da1f8a89114c6da755bab7","319d1a987da88da31b75e0b0e87ab5d40e47bd7ea68aa6f8dcb3bdfcb4b93714","bd0bb5e20abd61eabc397ec6f270dad6c02da352b2824a0abedc3467879911b1","6023e1aaa9de19536c149e18b9c08377cd14751139c8ed47dd3458d26fd3b83a","ec33680bdf48dece235131c83bd2a728f78f4428a4454c6c7a0412b932625c21","82910a5026a7e6ca5de409e1fec5e3a85e26dcb97a04bb4734e3b891249e3f3d","c528a565399f1c43ffb0fc3019a2c2cee2d7413a87787555bb34d4d613541976","3eed51977edad6c2579b7e509587049321fa77487298d3b73535214036c0118d","7614ef067de1e21e5c4ed10ec802ff07f79b9dfb75186edc1d9abf343905b9c9"]
Anchored: 2026-10-15
Public log entry: search.sigstore.dev, log index 3258859570 · entry 108e9186e8c5677a8fb5…
Expected log hash: 37382a24206a9b79ef105a983cf477ccafc4b4430b1549876c44fbf5fedaafa5 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":"v1792034893828","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"Really a simple documents, pdf viewer and annotator.","rating":5,"review_date":"2026-05-06","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 (ca3049e83faa…), 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.