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 duration of the refund depends on the tax office”
Google Play · 5/5 · 2026-09-06

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 2991846025

Proof data

Record hash (SHA-256): b4777ae3dfca2b7ddc92a3d810614d8820c5658531c80b447ea26db59b1c8572
Signature (Ed25519, base64): RHx/d+Hg8IDIT0iwOMJ73Nehf5bT970jFIqR6Y2lNDeQTmWPw4vSiyd89DC4cP07ybmVs/H/RDSM3wbjXPCwBw==
Merkle root: d312d00ed6ab2beb6e18f20d8087ad3474eb8b04b26d5ad949e9237bf3ca4c52
Merkle path: ["b476e78b2a193d4816b11420e1b67f88f62d7c479ac4a9fd3c7468eea5035faa","2d7170df0d5cf39d89d29196dec4c4e5061a2a47ee37e1a3f1c87820c0bdaf93","da3b76c939f8612b539dceef1df015e7c6e140c410c7b45584e0ffb22fe287ae","e854c4e3a6459e2d5142f1c2d6b1aeb68b002649f81b2631b0e027c0134de221","18b1c4b02910ba5a5c18b61403b00d651fe3b3292732447741fc88d05ea52af5","347796df3ebdca28ef587f9ba4efa2857cef99153fe671c1544db98f1dd38694","c52b4cbcd5923706669ef816aa1a3aa85fad4b4aa5de8e3088c6291eeec547b5","490a808af457538c75f0732abec2e7f43ce270363fb5239c437b1c6fb2764328","bb071fd731a46b2b0871e0da6d4212d091fffaaad086c859827409db26a65cfa","8f9211727ed6696999fbbe3c2ff1750e44e9f05aa287b00ab156dde72ade9fdb","a42476f801641c28ef951c05f84c533e56c1ec6f4363af58189e4ef14a2a4b03","2b3375ce3a7f55604f62fc17691f141c491b203281dd4c57b0a10d23bc506c51","8e634408bef90bed917b0ccc8b04febd9750c86f8fc48f4eddfd28684443b20e","ac3e8eb9a4dcd818facade9f7856ab850324ee2662bf990758158396deb094a5","799c0ef4fcc26840c2a1a2c1ea34f7ce94ca70a3893bbb37f42757477cf242fc"]
Anchored: 2026-09-29
Public log entry: search.sigstore.dev, log index 2991846025 · entry 108e9186e8c5677a5f08…
Expected log hash: 321e41cd200068478c5cf6f353f00dbd75153d3d8a640e241b1a6e8e4f8ac2ea 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":"v1790574513694","kind":"published-quote","locale":"en","page":"theme:zasta/billing/en","quote":"The duration of the refund depends on the tax office","rating":5,"review_date":"2026-09-06","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 (d312d00ed6ab…), 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.