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 definitely recommend it to the students who don't want to spend 4 hours a day just to write a summary of what they've learned”
Google Play · 5/5 · 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 3178600936

Proof data

Record hash (SHA-256): 592eef8325fc9941fa5e8fd2670825ac31c7ec3eedcd6f4056e0968bacd85997
Signature (Ed25519, base64): IphPYm5iNfHd4+JFN/+gy0mewFJPJH6yPZ87u6eUnQxd2Qs+Rlqc8GNf8m1KE0qghWrfknIkPC1B81Zyh9SICw==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["592d9752f1133a574e1dae25527b310e3f75405d75a4ebedf3a0cf6ea9e6e268","84bf39812e2ec22d79aedfc9def4bd12c708e80d9e43dbf23483f8f3bae46547","2590475f7e6c0c67ddaf1127490b3a0b73d96a5caed0e10535402f8cecdb6328","dca5ddce3e6fc9b398870c0636b658b7488c790cd6eb0df5a623834d3a23a6e9","1c61490e8e002ba3a0c013faef414587bad1ff2f85c686e7fa4a1bf9dca8e95e","189a0fa7f03873890915d3d0d71dfaa8dc2b24c1fade3e9c84fd4ca679c2cff8","daef640fdc33e0b28e4de92dadb105da3e1dbcd54c3d5156895eb3658a646389","704a4c4b9d28e9312e0750077171190bf863deca831a02f8db16539692f22edb","5e73dbd973f616a2c4639b7bf7c1d00c8b281d3da51465d7f138ead209f79c31","14d8c94fc2c1f683db94640bb14161805bf546c4851c89b6fc260f54ed29dab7","a272ea85631737531680457c069a82b977e8daa62af41dc864cba40b587da483","4379fefad16ae8ff2ba5706e6ae4b477d1b2ce3cfd6e873ab8243a37cd5eee04","2a2a0e0a04556444a1f3e56af70f8f7d735501b2d557278ab2ea5948d291f4ab","a445a39a48770a8fbc5d87a405ed660d401fa810eac6fbd1d284a96f8c7d5503","452f4fcbca19997a15e6a6869c50e026ff02cb90a6ef21da106ee0457e55941a"]
Anchored: 2026-10-10
Public log entry: search.sigstore.dev, log index 3178600936 · entry 108e9186e8c5677a6a91…
Expected log hash: f3dccf508afcb5e89d56dabc8c5aead85de215b1b896d057d463ea1c1bdb13a3 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":"v1791606586319","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"I definitely recommend it to the students who don't want to spend 4 hours a day just to write a summary of what they've learned","rating":5,"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 (eee462924587…), 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.