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 love this app!”
Google Play · 5/5 · 2026-08-18

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): b074769072921d213eb3023b93f6b52cbb2a919da6450316e38cd9f0fcee961f
Signature (Ed25519, base64): TqeAnC9jRpJ1XYKOn9ZXVxzSKPBOfLOqXWBv0/G1aISgjVIAmmbjaPlvPuIJIiXl4AlojlGMpJx7MkesNtmoDA==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["b073cec134e0f966d2b0b80fc054063427a98bb69d79da4032ec20b89b7bedf5","4dfb989a945d7ff4e73143075d9aa4cf71dd59bcb1c0708a3912053a81bfb04d","1f4a34c6f5b970605252fab0dd4cc28c4de96ed995478f4573777326e6b37c80","e03606a3fc975d4a0e9add0fdc29aa149b20f3d7fb6f0bb88d72d3bc3c2e391e","bf0783d1cef60b78279c5cb5f8a492182e0b6f4a2777fb9b3137a00d47bd1f3c","73208e3e1fc9e03d38af4ac37c01b9694f4a24d0b9cb9b1e3a0c90322a2670d4","faae470ad829fd38218af96b052c3786e550a7599d5b723ba144d70f2c957d30","3aad21e0a7e8e358e2f6d412f013afb1eae7d07d785dd913fb44fcfcfac01ae1","ecc8a53de272e7ad7c6fac5b2b28b9d8249a36ebdf1cede1c5bf3eb4fd7d88a9","8381b2f086e288e3e927d1a06cb7fe4b8f06d6d55c2f2042f0a55559908b76c2","14c553bdf50ec8620c64bcecd5cb57a277a40682b66746a5bde7892cac5d56a8","a881ef2a70af757470d8c26ade26209d4a9c636254361ebaffcdf8173cc1209b","7461bc2d06b1d6bef7145de580cb46d87ddc9fa66e098a96698a96372c033f50","f5776b4aea049b369136550a2eba5c5f94aeaa8e5ccb2b2ad336fc6ccf74ea7d","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 love this app!","rating":5,"review_date":"2026-08-18","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.