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.

“der Kontakt innerhalb der App war auch Super”
Google Play · 5/5 · 2026-08-20

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 2948162176

Proof data

Record hash (SHA-256): c98331791d2ae5c481898a0f09357fbc60582216a1f7ca09e242aaea3e814347
Signature (Ed25519, base64): BUIKIjhAGsMr9OkoODRDi6F09rR/d1veoLzdmLmwa3q4L/1Gl0oo5VE5YZ0TXDJqsvqPfYhdJ0+WXrjTJnz9CQ==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["c9802f3324c94bad5275567e5a35c6f7492e5251864a75f4770bb7701c8450cd","04d001517f7cc66af7e8e6c8d299055f6a7b139ed9039178add752330dd2436b","8f726ec43fdd6a776c67159615d20b07b59a16ac48113d4e011e19900d8c7a88","3b3e9d99dadaae103066771ec15e51d1648f4a4e9758041bf076ac005308625f","6f306b9a7f448616e3b8b69ac9163eecb14a31201a630db581cac2b3ac383ba4","61726499346b709c0f097de44afda1d996292071964c7b0304a0b2a9d0652883","0a6b4a831c7310d09a68b50bd37be4db57ab35a476a771ab706221f82dda1144","8737ee05bb3e591f354a1168d3f5795129f0331700ba1dfbeaa24acdf3fa8f61","595e989cf8f551f078371fab3228c868e15dd1072d632a00a3c60286910793cf","0a715338c382853c361532cad9de3a3e6b592ae3af6e66fcdb7027d97860e1fb","9d52e13a7864d7529cca85a4b7c15a5f7242a077b239eeaf0146f44c46bf9c65","0a9a33c75948420bc9c46c8097da1b06f4fe152fd5716276fa9112799a085a6f","108f3d171e4ec3a22d208fe56e34b1a576bfa9e9f8a046f3c09e78ff42b08593","468adf75cd56eeaa89e39f50b974b405db9921529d680bbe88ff0d1caae6f316","77ebbc5a767f49a9f64068a716a8c843de0ea8d44adc624726bf46e2e415a41e"]
Anchored: 2026-09-25
Public log entry: search.sigstore.dev, log index 2948162176 · entry 108e9186e8c5677a61d4…
Expected log hash: 5ff8f25b7934b5d72d363d6805344624efba4d637f2c851f11783b259b9d81be 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":"v1790226990092","kind":"published-quote","locale":"de","page":"theme:zasta/communication/de","quote":"der Kontakt innerhalb der App war auch Super","rating":5,"review_date":"2026-08-20","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","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 (539721061967…), 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.