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.

“Die App erklärt sich von allein.”
Google Play · 5/5 · 2026-09-14

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): b8d8bb151be2d447b8dd69ca04af21bd038c88a32da50ea9a03087f270fd66d8
Signature (Ed25519, base64): EVhKmcWdj2w+ElYw3+u9p3Pvt7eI9YOWuGtn6SLsuNxQH6P44evttc8aQYvSfHpNWwrQi+SsWjgezoJLNpVVAg==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["b8da5caeeb0128f42c2cbc507abeec1ac125d08899136c56e96aa17650cceea4","e21215f93ef0021f7508cadc72f143c322e10e06d7187bc61bfd5b558b981177","16ade0d61781250e6212d41344bc0354c1c7869288d7ab2265811b986a5ac880","65b22d7317b40b8b179b245dbb9b9e7ec17f8eab63c0859255a61aa51e9de335","717c9d32628cc79564564673778c990b25d72f425dcfd805d0061cd266629abf","96738dc1e1efcd20f28eb9ad3366708e8f615e992a6a60219a21a800cdbabcd1","e7ab8b10c8a86d44c3398654b1d205e7217c803394c04026ece4048969c9e241","8b178da6f21a77424e9a42eafabdc501d0343c8c32a287cf7ce136e9e14283b6","bad05c965b203dc71a72d7e98967e99e0013488366bb781ab387d1082ca7513b","e7f9e9023637a88be936098e64679d1bae9e9db5c513ea163653a957402baa9f","c919197c524c32c926c31f4b65a12463ada5b42732b6cfb01cf4401a3ba244dd","55a9b55eff9a801fcfc3d558b16967943372bf3872c32c7995af16402ab803e7","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":"subtheme:zasta/quality/bedienbarkeit/de","quote":"Die App erklärt sich von allein.","rating":5,"review_date":"2026-09-14","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.