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.

“I received a tax refund of €397 for the year 2025”

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 3082153890

Proof data

Record hash (SHA-256)

b9bcadde0ee12127870265abdb1a5055e36f7588699148a7af46a584e7e651e9

Signature (Ed25519, base64)

59+5hI4lDjJU73MkVTyCSNgJX7plZb5/h7YgguWlA+HG+Ir/u3pIF8xI4qdDojFKF/9DaesyMLvpuBNs8F2vCw==

Merkle root

400ee8bc8bb6e48ec8bd5ac7598e893e5cb7545daceec4f0578b6b1d061e7911

Merkle path

["b9b9a00d73b8931f30cf84d46004aaabb214f4c8104e9fde28adf0b9842f1a40","aa22cc102f316113ce3933398305ce5e576792815a6b06e760fa0382f77e0734","1e06a3d91c91d46fcaaf32a8c4b0ec2db9457cda585e3e3dccd03f7de44afef4","c5f97d76aa57de46b5a60a6b4530b76df5d237e229db5943963335809f90d370","0302a28ba1aa93df5cf1fbc7580090c7c70004f66177095c1571d963f76c548f","3a48c0c0b218d6b22686e116583703dd35f144d01d061b7d8fc547bfec1b644e","8bc0a2ae70f00a86f6ca9ed4c937e7cc2dba6f62007b615ff582c6366a23d791","ba5463a8b6308be5da504c29b7e084e868092822606b6c666c2b3b970e0d4ae6","51b982799f61c6434feeeab55cec43849304967eba47c30f9a758bc0dbd32a1f","ff1f75aaa570c5b65056c386e5c44cac244207884efac5b3755c9942a287cb67","7fb20bb2e98b93e2bf40dedc2149cb964d7e2b66a79177813dbd706873db1203","443ff0883ab60b9bdef31c9104c1800064867e4fc96aa4aa572479e6d819e99d","440a969b77eea7732103e570c7520313223a72c988fddbf409cdbd9ab0fc9e51","727572d95b19a4ae886ad98ad495d59fc190c9dcfd7deb626018d1393975dd03","02d2fd729874a4045685c92de04d21af3989963c78ad36afea7dd3264421abb8"]

Anchored

2026-10-05

Public log entry

search.sigstore.dev, log index 3082153890 · entry 108e9186e8c5677a31d2…

Expected log hash

cff4076b1696aa395d1840cc38c433580d1b7821d298d64e1adff5db6503370b 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":"v1791175845570","kind":"published-quote","locale":"en","page":"theme:zasta/billing/en","quote":"I received a tax refund of €397 for the year 2025","rating":5,"review_date":"2026-08-31","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (400ee8bc8bb6…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.