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.

“Es wäre fantastisch, wenn es preislich etwas zugänglicher wäre.”
Google Play · 5/5 · 2026-04-30

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 2907673729

Proof data

Record hash (SHA-256): e3d1fa023991a8d49875fd1dcf0c832605809b2f9576a49f133b2eb40a02f3ae
Signature (Ed25519, base64): bioTMgK6uTveAGN93fR4Ldb7R3LlQY3g0oQnM4jnxy9Tvxj4fMljFjn2uWASKLiBxpful+fQZQJ/cTdJ9NMtBg==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["e3d36dc62f0888139bd3af1ee03770515bd33e2f880d7a3e11b8c4e08833acc9","e9c80998ca3e3f480704b8266f832fbd7045c0e61586aba7ef6e56f460cde7f7","2e4afc88b2fa42e4073bc139b7a6ee30ca9ba857f4e7098933ef0f7c1686e8f1","11a9f9a399b3f81bd21bc65f8ae6cb5c8d89783f9054d26f8fff68584656db8b","774df600cd33c3fd944ee9de2b5b45a40f5df77fd56ddab8201b71019f3ee1f9","149607544ff881efba907cb885eafccd70b80601645e2800c64398f49fbde4bc","3d6b303afcca4dea83d86d48e6c4759842fd52b58565da09f8231a24f6c3d0b3","a80e4026c5875e5e462760cbbfc7165eeb2a5071cc0d9a1cfa47870adfade5b0","e80de9f20e892f6b72f058d6dda0324ea5f666000ce12c086315c540342b9660","bc8d09f0ad2cebfb648e7c5fa31cc3fac6a7d447cf4af4e2417b30b049b62ef0","bb894289bb71d3b696c9afbe454a75a78b206d9839b23e1a62e36de1c4316674","2d0841904d905b327cb803816e73e56fa86447bd28a90f792c27c874ed9a6b9c","c975f4076f62a76765a4bc502e988829db65110a1650004b828d2dfb5f90a9da","f92a7fda99af63eb008476cac47b147880eec6868f847624f8b438c917195408","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
Anchored: 2026-09-22
Public log entry: search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash: bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"de","page":"theme:vaia/price/de","quote":"Es wäre fantastisch, wenn es preislich etwas zugänglicher wäre.","rating":5,"review_date":"2026-04-30","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 (b9a08f9d6d76…), 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.