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 added a file with over 400 pages (the limit elsewhere is 50 in the free version).”
Google Play · 5/5 · 2026-03-06

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): ec07981cde9fd857ac96e57b705501f951d56386b988b7a7da07a190539f6ef8
Signature (Ed25519, base64): Br8Jm3hQlqZnUbA17+35UZhKhU6FWt1PO4I8zWoQPeXJSnuqdNtBlx7KVAqt5AUxbIArTVi5LUuvX1h+fWsBDA==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["ec00d25f6b4bfbbcaf7ecb37428efcc1e7fb81caed298b8ab18bc011f7aa8fce","d7d1d964297e7316cdf080d398063638e73a94c3e8392d1856cb9b3370b1432f","b731e8c9568de09d119dabeaf11a1a6602360f49b3d9689b77a0536d4934d032","8f7a8006d2fe272c086e369b8e6c71d98aa915a580893c873458d580b93e4893","51f0ad15f90939eb3b522fe659743d063cc42935ac4671a0324b30722c8c2101","c96bfcadda8f8c0af39bd5ea3a1c792233ff2b0f28803165087c783a5730af37","1b3514b6ac3c7ff330702b63e5552b9cbc1fdc4874b836de5a40edc89f3a5247","f6e67d1ffa6a580f0e21a94346d3003c3cf8472592d7bc10c15802f9a66df5d5","e0a247eec56ce92d98432511ea3f890319f22c2c081050488ac848588c972c0b","2f99031d1c290dff8d9f6c1f2e8f06da519449eb2614405d9c5ee1b450886c17","b331093f92df4d03f0bcccdb4c283a2d98779d6c363a06d0cd9c35338c6b7f1d","b382aebc31acbad71afb3ae06e4e6f9b354e9da57050f36d03bb1ef97dab503a","f95e3a68f572f5650a4093453e2bf28168547fa91a01ce08e539b3d7016a3f80","53a8a23597d45564e495678bf6125e41ef42f347693c924494330dab53ea1e2d","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/fit/en","quote":"I added a file with over 400 pages (the limit elsewhere is 50 in the free version).","rating":5,"review_date":"2026-03-06","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.