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.

“I simply can't do it technically.”
Google Play · 1/5 · 2026-09-13

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 3273342496

Proof data

Record hash (SHA-256): 302c312e7f079a42163bf0beb8374eaafd8003761181edd94173f594718a03ef
Signature (Ed25519, base64): YpmG81FIeiWLl58S9Uwy2QBgjxLonBCpz9RTCGOdrpBqYUl7LpGqQy+X2PiTjLfyDzwYNnm+hciHrvdM0WQPCA==
Merkle root: a6a2b4c9d7d1eafa4a3ba3595aa08f11c105165de84940ffc059f837c445104f
Merkle path: ["302fc4d2f17d77b16d5a1cce1485565fd7b54d8ecaea11bb2e3b4ea07abe26e9","04127c32ff0162df9c3a60995c58d8f8cb20ed138b130fcf761083a823833616","24ca4de92bf804dfac6ff5d32bbc4c21ff47fc13f03f0ada0f1e7f47a5bfd6f6","bd21f9e8d8fa200c71b6eebf0fad85949d2de37757854f6177c4fba832e4abd1","d10f0878b91765f603d2dea7af21c18f8f0a506bd57c10ded3d02c1d166758aa","179ae48ae72b5a35d03549ddffa2387bc4a10580d6d78d355e0c0b527df0edd0","b05b44133798ab05abf7ea46a4c42fa98c8cfc1708899afb30e31f9afce795af","1cf9a6ca630b4cc35e4d84e51936c0a71b42b5973fd017747ca79d65d1dc5466","8546917b3bb934cd285959de5ef84a36ff5d232b3bf92b84512699a9a9af3b53","04e2828ae75e06363ea23cdf79c3e16ad5e28a6b8b3a93507ae73331f21b7661","fca4148b7d63d2155bd4f2c250f595d4390b55f1371317ad1717a801e3baccf1","8ceb1cbfd39c6c4db73ef7ebf9abc517c7ad214544f8291eb9ba9ebb0a70e4ff","95302ff16156d5e277933eeb7a8aae0bcc9cd9ecc1e7491c1aab462ce098abfe","d9b9cce27629bc902030340ceda068fb90d53ddab20309d3b3d8bb3949c170f2"]
Anchored: 2026-10-16
Public log entry: search.sigstore.dev, log index 3273342496 · entry 108e9186e8c5677a66d7…
Expected log hash: 8a8ea4260f3039926c3342603d4fca7ca9e5c627d841ac1c7142e303a049d0c7 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":"v1792122420855","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"I simply can't do it technically.","rating":1,"review_date":"2026-09-13","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 (a6a2b4c9d7d1…), 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.