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.

“Super App, praktisch, nützlich und einfach zu bedienen.”
Google Play · 5/5 · 2026-03-06

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): 04ccc2bcb0a615815064a65d0e20fc32f147b492533c24e3ec9cab81397bb25b
Signature (Ed25519, base64): YUkeEYbBNMMR0BQf3EHJmO/AWtGRt3w+Ffzjp9kG0IrK+uAjWZ0C1xEe+rwCoGZCWFnesEZVzir942lvyYucBw==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["04c28fdf06a4dfc48eed47bbb559b9e70890409529a32d18ce5d4e6681ffafd0","981aecca29c6418979db41fca5720cbb206858ed7b89c83b0a342fbe8a343750","a0e4e8f06cc7c477c0af30653c26cb85e93ed7476e6986fe019790a2e798d965","3e86c4b20493fa11dfa5127e5ec95f41ede54c19f6af9c17be169c9a7ad5449b","29b770f2c04202b8cb8e159f9c00de18833e4887559e944ee285eb9a8d4ce4b0","663c4b055d25992693e5d905924479547e88792d00f798c83eb71af81f772d0d","414cd10288a54ef6d934091393ebf33db88197b5fbd2a4da7b0d4864e978b540","79203a24127a273c9ea85004c110b3e24435b7f326b4920521e65d561eedf423","8ab4ae04df72592a9821464c15ec55de2d34ef9c499a6a072740d22186d1ba29","60d7b3341ad517458f361843bf5f20677587a9bfe605d627acda5f2f4788680a","ce5bfcf324b9314a59d413c765341b50971426d3ef6ecaba0e4b20b7996d48e2","9a818f1045e037b5c81556d7f6ec6165a24143565f78e16f2e84828d0670eecc","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":"de","page":"brand:vaia","quote":"Super App, praktisch, nützlich und einfach zu bedienen.","rating":5,"review_date":"2026-03-06","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.