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.

“The tax submission via the external tax advisor went smoothly.”
Google Play · 5/5 · 2026-09-02

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 3124210377

Proof data

Record hash (SHA-256): b639735de223ca956bced5cd033c646743979af66ce6e2c278842e62b4b5e3a2
Signature (Ed25519, base64): pT2xgx5SKtr+XudoEy3bZnchwbq06VVbTelLeq83sF2arsR2UaeG5CaoBMZrxoF0wnVvsD6FaW66/nB5bU/9Dw==
Merkle root: 3b820b0e91b2475ca02a79fe65f1dcaac35af570ee21f4c868099b9c17e17c1f
Merkle path: ["b634dc2d8fb61664212c20aa1e267259b41632c46da1ff0f344d0f6fdfe694d7","2343b0a1d24029a82b9d9bc97740b892e74b31cdcb99bd6037d43f130312feb9","ac10d74f1c3d7977acf1f550a00d6937d2f71e855f51fcfbf41fb03077075d63","45fac1a23de9f9021b212fa223e66d206f47a44151cfe198cc9accfcb536f869","a7abe07282cec4efd3fa301b99986ad735d1135e554378a7d769fcf157ed6353","f3fd9d5651ef35fb09c230d4492bbd0d48a6c2ea42f127dfe178a54dab20908b","b7cd2d51cb2281ac613933622564dff261a22a506ec50437e234be5c96bb8fd6","35f6b53c812ea7dde2e4224f60468864e5d758073158d69f03156ff465d39157","2a5de52a659ce9cdd6d2a32f507080c112e5254ca580827251c7758d6b14fa65","3d4c41a47961944a3b832da6cc952b9be71bb28115e2e72ddc62eab25de898fb","a6ca92c89147aebe3053438f80981c1958433d9d49b1c71268b006e20f470936","79c527d76472954c74529d3dddd508bb5300f00baa6ce66cf581cfdaf986570e","83db60ef01b99a503ccd6a6abdd52daa1b692b73cf5b978606f8d217f799000c","00a544d427d2b0ef6286f24c44cfcf3a5f82bad04bf6442e459c003cb18785c1","10553711bf6721bc3fa0f227ed3bf669673b7af202d9c22d19db8987b7ed8714"]
Anchored: 2026-10-07
Public log entry: search.sigstore.dev, log index 3124210377 · entry 108e9186e8c5677a0172…
Expected log hash: 20a5241ced0c7b94303a7b8002f1aae217df3f1371aea54ff5745a148bddda47 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":"v1791349684588","kind":"published-quote","locale":"en","page":"subtheme:zasta/service/misleading-ads/en","quote":"The tax submission via the external tax advisor went smoothly.","rating":5,"review_date":"2026-09-02","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 (3b820b0e91b2…), 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.