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 just downloaded the app.”
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 3178600936

Proof data

Record hash (SHA-256): 788ecb7ff9bbe7bd07c61a9dfecdb085f5ca009fba6cb614695b67cfc6f71d25
Signature (Ed25519, base64): pSKrBVfA91MjPTwzrox0zWpQrAhPeo3YijXIXBQvoIZAl3rQjpnCv4a+SQFg1s1kggpTrZELPEoiHne9YAV+BA==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["789141aedc30ba7b4800ce51a0e2bf5f409f82c8a82d367ac991f91204c84bc0","773ce8bc562075a6adc3d426fd1f76aaee759fc6735a4f1bdfeb65c1a2f59ff2","6d3becf74c7625a92f5728c61eb83c9784917d84dbc2b1e92cc2ade9dab97e5c","db76ccfe890acb00261c7fa25938398f3dbf66006b2ee4a588871ca808aa1935","73cf0c5a6b300d1b5045a2e494bb94ff69cec78acf50c262303e2857bbda8560","40293cc605e30aec230a1b98feb721929f69aaec60fe25b8750d7a17b2dd7222","a3df848479adbc1e142962868a3ef5439dc699656881c9a96f5d3f008c87db9a","ceecf624bb009b417ea5e4462fab355111c6aa90298f5e3ce9170c160cee2d9c","681a97f45f6b8c6307cdc02be27b00534fe0100ebaaab90f8ba1080c1d3964ac","93ce340dd2d34fcd63a81382c8cb0b49afce0cad8511e3df3630cadbc91643a4","766f46b5f3d52aff6fbda02ee48385a24cd8332cf408c1bc11038124cdb3fc04","5b1894dfcb750cb74de963040bda8c5d7aae8b006db7bf1f2400cd4c8a13bad1","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 just downloaded the app.","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 (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.