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 konnte mit Zasta für die letzten 4 Jahre rückwirkend und erstaunlich einfach und schnell meine Steuererklärung machen”
Google Play · 5/5 · 2026-09-08

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 3220996539

Proof data

Record hash (SHA-256): 6e2f2cc2e6bc375a25886f830fc21819bbb51542959d192faa93401f1b9e901c
Signature (Ed25519, base64): 5lT89hS6+XO212EF3DdSFg904W+sqbU2+EYIUBrp/ZDuQdnoMQmBTJNikrnd8ekl4dRgnziw9VcBNDF+FmMbDw==
Merkle root: 1b0b408c7cf60721bf3cca50f4b7f268b0858a42fba11906e486c6694252cb22
Merkle path: ["6e326797ac329fa360cd0f594155a3b3fec9fa0e66a4b5f5f1c7e9e6e6e61523","98a0255b7a3b8fe5364f64f5d88ee64efce1ff6c5d848053c42cdd25f7f79e61","7ea74edd92a03f70d8c024f642934aca45f4037cb90908b6dc6e7c524b6917b4","9d94ede368c1835992c02e243f9d2af084f784c02a2f6c0a46671567e689c6b7","a8f5ba8f6846b708f6359a91670db0312a1cc550756b15e5c7d64ab89ae70b6a","6c4e717689d7204240b8ae79ecd243452582cac16b6614f27d718e035fae04a2","0c637611e9d18add548a1654d718487f89d13eb74986ff30caa36544ba0f10c1","c05ceedaa0847080c5e4aecc5b1f9a5603d3da8d4d22686a4227ffd6af294883","add5f0b8d267158ee6d53bf6b0b5c68a2212116356621f0318c81bd700380207","569423c611f6ce9d6b9071ae6f6c87e4baa2ff9a6557d667cca54f62cff3ab9e","2cca28163d7652cb5a6dc2ffca1e02c6bd0178d2ffa4508f99e0b0d5175c625d","e895dbd78baf282b1b2da66a3adc8b75002e77d6e51cb6213add696c125f6478","a35aaf4615d6d52528c83ebb3bc75a27f09df1b160bd5ce58f5b6dfb09d28482","8547750c311d384cbb1a945300d6b6fb4f4bd2b78af7177366b3baa4b4c1e724"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3220996539 · entry 108e9186e8c5677add5d…
Expected log hash: 00694de1434e648cba57bf07fb439ed90ba501083441667555bcf619bf5edce8 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":"v1791779426071","kind":"published-quote","locale":"de","page":"subtheme:zasta/quality/bedienbarkeit/de","quote":"Ich konnte mit Zasta für die letzten 4 Jahre rückwirkend und erstaunlich einfach und schnell meine Steuererklärung machen","rating":5,"review_date":"2026-09-08","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 (1b0b408c7cf6…), 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.