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.

“Vom Design her ist die App wirklich ok.”
Google Play · 5/5 · 2026-06-09

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 2514851395

Proof data

Record hash (SHA-256): 1cbbfe76298615423274700493b4661d1832e6b551c7ea87d8f62e8b65f205e9
Signature (Ed25519, base64): 8xALpwYC9dViMBgf/pnmNel3Iu3uyP6kV9vxAbpJh3ht8Cx3WCgfagMGVgWEB7ZREjyaG9lJ1+ZQXgwtWzrEDQ==
Merkle root: b6da35820db152d3d2c0cee337545e3489f0422a146fcc8c60737b1d3a3ef55c
Merkle path: ["1cbd5a9e90bd8e6467121cbaed9072d7d7cc0e2299a6fab82007b55d15009a4f","7a16a2d8ccbf89de7b370fa782b15a7081842467df6e63426f514c899ff82d13","d8442ee534b8a229e4f4f4dbe8205b21e07b777ba47edb2a5c66b088f3f55551","2c779f8a2eec72692ae8c37b5d227e16893bb3690aaeeb9a8831f558c9bcd09c","9f3bd0674d44e9be5317414410aa245af4378281bfcd54e744a2a46d56678745","47cb1c44048e01bd9a7b7ce1d5d41909ae2efc609e3fdfbd56c17917d050734a","3d99635ea8e103122e8db2835cea986ba31121cdb9bd5485914992601b5446f1","9e48cf5edcf39e29220406f5297fb5172643ccf80b8b58ac228667723d644b8a","032b2287fd53e08841eac055258f8db41f8438b34010a3bf00219eeff7205ea5","c68c1beed1b47df955c234170937fc9af0f7ad0b361c0124cfa8bdea8dddb450","e3c8a93f733649b60f5551058f1ac7f0032b17009a3a8456bce02f564bd32601","92d07c78fbf269851d3da54c62f31312c51a6cf021d21f24215d69092f5a5d41","a1ffb0ca27bb2bf54e7fd100f5c8de52d61a97b22e607de0b6963ed83cac9929","0e90fbed1cd619e0c2620a1f61162a7af0ed873785a7985f4469ef4721ad000f","c54d917d90cf6041da53ed8de4347323c6a7de99e787dde7349330851a57a3d5"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514851395 · entry 108e9186e8c5677a4f62…
Expected log hash: 687a04ce8b1c63a953fd353f279012a3ef08c4ad12d885582b1b6ee85d05b900 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":"v1787134378129","kind":"published-quote","locale":"de","page":"product:acrobat/sign-pdf/de","quote":"Vom Design her ist die App wirklich ok.","rating":5,"review_date":"2026-06-09","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (b6da35820db1…), 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.