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.

“This app can't read a pdf on an external usb flash drive”
Google Play · 3/5 · 2026-08-12

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 2515439294

Proof data

Record hash (SHA-256): 6b6a9ce741b1024d935e021cd3a1f15e6909864133242bb9a39839975e3b43bb
Signature (Ed25519, base64): 39vQsT/Ib1+0uARWDnbFB90H1x6b1onWxOtiUZyUo+Y2ywEi9++fadQaKTVzuLH8BqNhO+6VxYc8HA6XcgEBCg==
Merkle root: 8c6268a14330d1a3403c561e774645b0671f81571ec1735d4674ebe1de7502e8
Merkle path: ["6b6c08aaba26d530bc1a37be11076a71c85fba65a946017946c54d9341d58678","891140bab3ec12afd884bfbcf1e82b881cd5bd11d685f7fae7dbdc1c4a6c7432","c16d7ddf70a04558ce56cffb37189fcba452ec521540d5d21150082bafd18217","c35b7e4d9461ace3016023d489e393537e797e7b39daf7dacfff24b9036a409b","e6574006ed1570cf615024e7d64e4144c53e1011baa93c4f418595c2476be4ce","4082f85b6fc581a7d4833f91e786ddd5cf9ba67644255fa964e8e3f14afaa29e","5070d4fd77782f289b5bab323e80bed564a3f5ea18ca23f8cbc7d0f38720313c","69c6f8ed141c1427dc51d6412b2ba933025f1842786044a8fda6ee3a901f5d2b","b0f3f1451bbbc7a3d164766ad7ac1e79cd6c84486fe92f3eae3b3ba0c7d2968a","cc64cb7b3649d0e908987d7f35ae3da4d65ec9b84b306d1113a1f903800d82c1","56c4c537a9c4b89bb67e616e0e15bf4d68149860a6c83abd0a543583688cebba","da59334afa2d819633e90b55a7c9b28b3150a2ebd2ea3f870365a1df4a927c16","747ba0b6317c3750e6242affadccbda44b868489e275092a024dce997ae773a2","3a0d3c267d2a0d179768ecef7d342dead457fe1d4866ccc6b84c72a8362e4b38","f548939ab1bb46e2c6638c372c3e2eef0d561ad18c63c15229fececc951e0b3f"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2515439294 · entry 108e9186e8c5677a4f15…
Expected log hash: 128701fddbb19410bf57cdb2d04d7a0278d13bcfda6410d76f176fa58341e1c9 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":"v1787141082461","kind":"published-quote","locale":"en","page":"theme:acrobat/quality/en","quote":"This app can't read a pdf on an external usb flash drive","rating":3,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.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 (8c6268a14330…), 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.