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.

“after the latest update this app doesn't open in my tab”
Google Play · 1/5 · 2026-07-15

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 3199173952

Proof data

Record hash (SHA-256): 19a4d6760733d26bd595309dbc55d477ee724d5f4f466392dbaab1568950b235
Signature (Ed25519, base64): vJrtaosSF7hroT10LOuxa/WXnGeZqo+HBEckMaDUfWifiReTBhBIHtEdyAJrmWG8+/ccHAYXI49cCK/CdRiLBw==
Merkle root: ffbc979c8901fdf55f43c5151768b18a738fc1c271c9b2dc97349c3fa8ed35d2
Merkle path: ["19a4aa0346114a34ee8e43e2fa81ee6b7bf9dcb6070f72ff44de302f02256926","477958dfce5a9642dfd923e1c0fc6108195c9b57f34264f9ac671305470996b8","5efbca220428844406dc9b4dc0db3deff76f343d287adab65cb44f225c9cc335","9939cc13cbb245b3a618f9ec117ce17cd91eda952da0cb8d0b726679a18d29b2","7b8db6d571e178c6c7f04ce3e4316bff9bb23a322cbc7c9be7885908267c7015","4d791d06de81ec0a6cc113aca9800d6120d157096e0d00f6c2ce1bbbdbc70815","81aa0974dd7e35b8825032c551fad29a0bfd57cbfc699361b438bcde0cdf50ce","6d7dc9b05dc27a8d2ce3912fd05743e80cdb57bc5e417909c41353cb2057c645","cc3111b9452300dcfd877344ab252a5167c184db0557f1448bfce519222bcbd1","028c7d3d0925502d4acfbd571bdb012ce7ea3a1726c051f5ae2dd05074907dab","c1e301c933406fd6db9108a2931b00d4f0fa66e93d9f930859a67b8bf903e209","9ef508adee40f106af5da543ac881bee98966b5cbaa60f63357b505631495631","81757bca5afdb109f23b2b1ab2e08f434f626af25e986d2585973e2409a82e36","2f35432083547a52411b4b8128ab118601abc6a6e158a38894add0923255dc0e"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3199173952 · entry 108e9186e8c5677a85d2…
Expected log hash: 3bc66074c7b0a853326bf5ba0590a111eee6455dac5c98c791c22eeea9a48920 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":"v1791689192448","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"after the latest update this app doesn't open in my tab","rating":1,"review_date":"2026-07-15","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 (ffbc979c8901…), 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.