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.

“However, since I no longer need the app, I intend to cancel my subscription.”
Google Play · 5/5 · 2025-09-03

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 3199014646

Proof data

Record hash (SHA-256): 476a53b8b3a596a96d906cb5419f4a837d807dbaf3c40d1632b7d3d7688f0308
Signature (Ed25519, base64): NAc0OmcW38xpKw/bDrcliqh5n16OXBKNBONwOyJTg7QSlLHPkMQ/7stYgGDaiGO9da4Ieo7mzLzvvf8wALbdDA==
Merkle root: 79268b3be1e951447ad916daa23d94d3a225505999279adfec84e5728be030d6
Merkle path: ["476a909578a6d1d7407e490306d6f6fbe455872a428eec76adab5d16aabdf11c","add53fb5ce2573035c516c0ec53faf1d40f5f3421cf81a0401c2239d56b59298","776b4271f879bdcef7e542fa340bf72ca87bc02bcd0f00d69c230efdecd84e7d","b46f2205b3388a9249346ca7cc402fb1dfa98f34ec1a45669d5b660bce28a2a0","03ff8f3b6ab3ff8f868a064fec5649a4096169c810acfb11d509c8ae0473f87b","30df8e8fee3e88fd12aaff48ef2440f01e2fd434054da10a320bf10590b2873a","104d796735e0f672d596a02fcefa5fb2e43fc0b93d6c6ffccd374c1c5bd0f8df","db01cec90cc284e82ffbf703fe39f6fcae53f971ac5346b9d0a60531de7b020a","39d84b462caba6eaf1683024d96098734773f8c510759d857d0dd58d43dc084c","8c7c9301d2254297c3fa375a0062b11199a56fb089d7f83bedf4063f9ad3d2d9","fa7d3c74616b449fcf1d93e58af28e7cefc9e07a2788ee9f99d020157c788ac8","67489a45554ca41db9207c6fc4b13fba605b6cd66618be3880218bae3c1e199b","1ce9afad9ad086057c7bfc40a44d07199e0e2fbe95565fbb52e4e14d796716a0","b8e0a41590cdecf5ee846d5a4dcd3ae91c8a0a052b75fffe7c4c5f4e2ca53884"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3199014646 · entry 108e9186e8c5677a77ce…
Expected log hash: 55430b734e4d00e4ba9c340c7ab064436f91281dd4cbc27c1ffc37d3e26a0e3e 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":"v1791688566698","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"However, since I no longer need the app, I intend to cancel my subscription.","rating":5,"review_date":"2025-09-03","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (79268b3be1e9…), 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.