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.

“Seit 2022 gebe ich meine Steuererklärung über Zasta ab”
Google Play · 5/5 · 2026-09-18

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 3199295725

Proof data

Record hash (SHA-256): 738a3216d3076fc2f68bc8be5b8ac3430158ecf56aa23e676e8b398ea5410dfc
Signature (Ed25519, base64): ABMsqxiLC8FRG5f1ripqRGAM37lw0ZdAXVUvib57AuwBWbfzeFatXNJQT29K3kZ6iDL3cCm2iibyk3h9W8NdCw==
Merkle root: cb5472fa7b7f10b7453a4f782a38c5dbb3d782ac291369ed3830c2ab783a230e
Merkle path: ["738e4b6bad2d104f932a3a672aca64d787db1c38ef988a859083d286faf7e766","1dc5ea437fc57093b90519b11278705eeed27c2a45261f737144b45a6144739f","ce9978cbe86970d8931a7648dbf6133d711ae83cd8eaa60c39adc495050486b3","939806250454ce2bc844f2164b0a15659893f8467d4f54591df58a31dd4d176f","3c1424ff3415b1487ab5ecbcac495d14cde78d4b5cf8a6c4de98a27f1aa6747d","be05ee057999cc461db5f56528654b0dd2c79cce46ccc44e5b78a557b327006d","a7685b72acc8b09792250e733baa76932bfcc779b07444e4b20663dca6521f08","deb37bfbb6c81b7e92242b103283a781ca281fa1f7df264d8ece59bd83a099a8","984e1acb4f80018e3361743de537658c4ddc98dd7d225760bc869f6b59b2b119","fe5dc2f78c43faa4b7999436bb1606554c8b559922de97de08520e319dc81d92","ffc5aa116de4094887a9c6976e72852fb073e666c5cbaafdc0aa109aa93d2a1c","9abf580f4ce85e12c89ebe6d994628db41b6942235022aa14dbc3f27213cab3c","d5c54f6be615dd1c8e7a065afc12e543325363bfb66a63065a4aa1d52a1dc406","6ab0f07aea38f551fb6ed4456f21bf7c468ab54859dff87b6772a51601755f64"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3199295725 · entry 108e9186e8c5677a3fc5…
Expected log hash: 59b8cd8284c909c35d85f443b6a086d482f8b667c56ec942d663937a75e25638 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":"v1791689736846","kind":"published-quote","locale":"de","page":"theme:zasta/ordering/de","quote":"Seit 2022 gebe ich meine Steuererklärung über Zasta ab","rating":5,"review_date":"2026-09-18","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 (cb5472fa7b7f…), 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.