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.

“Ich kann diese App total empfehlen!”
Google Play · 5/5 · 2025-11-30

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 3100032352

Proof data

Record hash (SHA-256): abdaeefbfea9e5785ad18e3e067041c9904a59052f0a5f2bd722d7365bf5786a
Signature (Ed25519, base64): pfhs0VLaVEblJE3xHg1Up9GTuHSOwTE2ON8kVFK965nzdfSTvvl1OgoO9uZLOblgWs7jU1BgvOLyUY2VVIvqBA==
Merkle root: 61203b6d05350adaaef087cbce75d25fa5ac2036c1a66344255fc73a224d39c3
Merkle path: ["abdc65dd015b1b72827fe0ede0e1eacdcf79d813d321934c0ba0bb9906c413e6","b2fd7e8a74969bcd67bf640ccdaec56f243818a71e2547af5c1808264b8fc524","208d63053f2b31778814e7cb38e5fec10e13bce242ae61929e8cb55ad07993e8","15cdf3c699304cd7f410ef3487e786238f67086dbb7b1fdad5cd7db79bfc6f10","06371a22f0871af3c13b7d29d72d649a4b9cd4ac1191062fd2a0aa741e9a4705","cc9f57ea9dbeb64389edd25a397b1914a3bf76fa052ced9ac223c735ee2d60d3","ea6716711971b6d0a8ab21d739866ca22b6f9c6fb6b38590f9d91e19f7ccefa0","a380cec2a34ddd9c5a7e64d800dff5a6eba795873be44e676edf63e4311c316d","48cfe63d8cb8e59e7ac13a321d1f9239f5e5e5e3a5d40aeba4ae795d117431be","a65ea029a86d82a43cf6185edab7388c6721f961a0c2c27ead45fa077d957fd4","96482990966ebfa4b020201622aad0961fcdd6825e06bd7f3d8c37653e86f04b","931aac949c4336de6068af6c8b3f9dc9d820d099841a1832e8e3236ef7792d95","3b749082154db3d810496435cb8966899e8cacc733dab6253125b24eff86b6d5","341c8949cb7d1561c464131d45fb650d8979e144666a41b9b51158f1f195448f","2510f720b3b91a4799a8e500c87cce52153f0727344aadf519237b8a09b893a7"]
Anchored: 2026-10-06
Public log entry: search.sigstore.dev, log index 3100032352 · entry 108e9186e8c5677abe62…
Expected log hash: 0a0ca7b748f6c99c5a75a761289092bb11c807eeee08be8ec366fad5b0bfd2d5 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":"v1791253605372","kind":"published-quote","locale":"de","page":"theme:vaia/communication/de","quote":"Ich kann diese App total empfehlen!","rating":5,"review_date":"2025-11-30","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 (61203b6d0535…), 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.