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.

“the button for uploading your own files doesn't work”

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)

37f54dccea9127628283bd743008d22b1a83d0da0f68b152a21aacfe1202d3c6

Signature (Ed25519, base64)

XnI9e+rxldq00Z/c6/I7aSkxhLJ0iR3GagDHN08SFb6jkECh7F/AUCCIddM7Xnb4/UhV7CdxtQKlgASw5ZJcAQ==

Merkle root

eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6

Merkle path

["37f7217e7600b28b4f9be1f013103c9604bfec446547440acd4435d853eaf71d","5b2760eb16958ee8608ae8c905239fa836ae3b633cb6e5ba016c29a15841b567","2709d2fef6a52bf32ee37a79a281567722717084058b5d11581be890c05b1ad4","daeced4116e010b9418c4bc2a3334045559bb85aed350f8290a9dd8a6fb8a896","7754e5ca249406374e6e65fbb6be15dd5af424a56d8e41adad7019a763d9292c","1f1b897a5e31d9a18111c5be86d1a695b11444c7dde921811864c2157485c974","416ef7087beb2e12bd85a3b20bb5e964548dd84e30945c662d150565cfdf5c2f","161873efd9208794e66fd18b77ac6b1997eb3f99c948a49ba821de83cba1e788","326a33e87aab84610b42db68ab371007c1caaecf45ed0fc0de91662a91b11625","59457fe5dbae81aa71a4a7f65dc6c96b534e0f52c3d0040d35add6206b4cc62d","e22e78fdddc7eeb3f60668ef62b942f372cc72aee0642245e1b1d727cf368318","5a28204f9372278679ccf6b3ebe28cb3da342cbf292d2015dc590fde73763288","2671ebca141255a0c11a3bc51354d8cd008634f7e59a58a3f3f9dc756141bb9c","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":"the button for uploading your own files doesn't work","rating":1,"review_date":"2026-07-30","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. 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.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.