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.

“Fast and simple help with your tax return.”
Google Play · 5/5 · 2026-09-13

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 3139760477

Proof data

Record hash (SHA-256): af2bb7c5e4835663354bcd3381c752c53de374e05aea60fec21fd75f5a5e79f8
Signature (Ed25519, base64): U09WAwiGL1IaPbqXnwAJiKh5fS13qQQsiYg9cvj99Vp2bS0cDoJRkOpg19F3uBrwNZ5896mH/8OGUvo9vb9fCQ==
Merkle root: 49133e6803d24035baa1544a5c730db93dbaf832df48f680ca855944337404a2
Merkle path: ["af306d3c3cb1b4b88ad7e426676e816f1e20dadafc2915851310c9c356c3ef38","ca8e7255a828cb96761c994eeb87889af39fb71437643427badcf5673993d446","8842fe01396da9a7845a798edd04955b123559dcfc8e7e4564e734764b9fdbc1","259c5da39332f5ccd8096b9c51e9e1938b874dad6f6329a19b042e705104a9f6","d78c5a62ef0a8a8d99b3d7abb681a53a534d1fae12b427c6621f0a5969227bbf","0982a966a65f5192b541e75eff84e0cea5a9afca785d7ec8fd0bda0012ca461c","c6a37804e2dcd60dff4195a0b46ccbcdcf476e70b6da7bd71d38258819ab9022","0038263d53fdbd622b7e858bc6e0eb919d42ad461e336e55793c12923476fc33","20111d6a0a4a5069bf55a8438344a7f29511709c28eb19a33d81b848e4fe752a","b24dc4cd4d2b46b3d3726b8961875d4f020720fde62d21f66a0e54d291d37f1a","b952cee95e1c92206073c0b02682660d7812d51f0ff51a4c5a54d477380adee4","62cb3735bc78d2fba60e7ea9cd1bfed3f29a37011e58101dbfac3a4028d86eb7","64f6e44d0d153cb01fbba011c770c85da4e2899c81c01e95d009474dc99d3150","541a456de48928931fac4c28e56562983bd2f8cd0c9306116286df2e2f1c9422","d81f506ca96dea712a8b56759200b270fc625cf496d323ded3475eaafeb2d916"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3139760477 · entry 108e9186e8c5677ac88a…
Expected log hash: d54b6e5e20903e9be29e6a5973227ee9b3dbe61bdc0fa6481a5788472cd5976c 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":"v1791428432986","kind":"published-quote","locale":"en","page":"subtheme:zasta/service/misleading-ads/en","quote":"Fast and simple help with your tax return.","rating":5,"review_date":"2026-09-13","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 (49133e6803d2…), 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.