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.

“It is perhaps the most realistic app I have ever seen and truly deserves 5 stars.”
Google Play · 5/5 · 2026-03-29

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 2907673729

Proof data

Record hash (SHA-256): b3a4aa505d29056eba15e62665a172a46380041949183f4bd8e6cd1e7dd4c5da
Signature (Ed25519, base64): M7dUFn7V9MVkE7Vjgv4a0tI5SX59OHrJ9NFr8K8dciFHw0B1Wc0Khv1zpGJTxZou0iH4qRBvD580AxxPH8PzDA==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["b3a63c28075e0002df7238c44ba00647c94b48357d6c97103a8a5a4322b5543a","fa2c70c1670a2a1469a264686e40107b91c0d55a1e1ccebd6e2c41adabd279b9","bf0c57890ea35fe2f6eda51c46daf14f154dc45d1b52889287b462cb21e27ff7","c9d02686ee6e0b733e5e61ea40b0e786df9bfff16bacb3277b9d68ad79bd93d3","c42d6957777d9422a52103e68e65e645cd2d8b5f83e8c0e3a513ad1a3b2d2e45","1ee3ace3dc9d6e4fb3008e8fb530a1639b9253efd443d97e80de626fff1f8613","423654371e4a8bc2666ef208f2ae82616558bb649468a7b2b3fe08fe66bb8086","50086b90b6eaa30e3e452fdf6e2e77048c18b386b36b1d7e618c4f3119cd7e96","f4d4430281d24d45ad503a91248e38f8850f25245dc9a8fee9e00d17d61a503d","aee526ca68fb9c032a3b580add14b26fe8d48f9f145846929d1b286460178d66","302781f826e4e27dfeeb952369e37835d487d944454c4a4129ac11187f525b5a","d0e82af4a03d7591b930166e680788d40e9d0f467d2d9124361d17c683e6610b","e73087a4c89fcbfd62483a37ad723e600377233e603592ed8ad92c5db69f30f2","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
Anchored: 2026-09-22
Public log entry: search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash: bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"theme:vaia/delivery/en","quote":"It is perhaps the most realistic app I have ever seen and truly deserves 5 stars.","rating":5,"review_date":"2026-03-29","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 (b9a08f9d6d76…), 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.