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.

“You get a study plan spread out over a well-defined timeframe.”
Google Play · 5/5 · 2025-10-28

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 2904877428

Proof data

Record hash (SHA-256): d94fdbedecd75d3393aa491122154439277c45cf3032f2ed61b1f560d9d946ce
Signature (Ed25519, base64): kx1VzO1UhQ+Dwfn8ZFJLya0chlWynW3ppLfjoYOfM7rG/7zWxCY9bUPIbPVhKAGF4EakH+iQ3qtwLTKsF0K0CQ==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["d94f6f81ebe316429c84951b92c9df5cdeb1a771babafeb52f3f7642a3c8a61c","92ead3bfb8b301396a62108189969512f1ac12ca5e58405eb6070268f61f3502","64dd88ed683032aefa8fc3afd6a9e9184e31f7fc7620d0bede0b59c8ffedae16","224dcf76c6fe12889c2b2bfafe669cb6bd1d59235089c4a0ccdb580831c41ddf","28be0f7083c0966a70643ae946a1d69457c87dda119e4632fef750d9b0f0b167","33b0843214c28d785111886b4ee233e7e8b75454b5bbe6fc6b0c21704f3a25c5","893f0aa1ddcf03968af84a0cfc48ab08bb1388e2afd7631d5cf7e13c5f7f4489","72b05d9bb5de7900be94df73c56c5c1506557317c24c75fe2deea8db5268dd0d","a2517bef0b76499007a01a17fdebf4241d32c825161f3a030e7af4d70f23df52","634d2be91479ee364267edd428e0d4b767a395338df1611ad1dd6483bb792eff","8dd3545839055f7d4fd148a3c52b8f00591fec4cff65bda0b272f8625df59986","bf08a7b70abd12d7b26586897b736d1c0404f066aa427e277708a875f0cb6bcb","06f94171d32c86f72a9e1d984f2a7c3fa7bd9f00a98eabaa3fbd7d57db71aaf2","e3714293de39ce3c6e3cb9d5ea7711343b19d2be532c75504682d8ef52e8f91e","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]
Anchored: 2026-09-21
Public log entry: search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…
Expected log hash: d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"en","page":"theme:vaia/durability/en","quote":"You get a study plan spread out over a well-defined timeframe.","rating":5,"review_date":"2025-10-28","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 (e299bf38720a…), 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.