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.

“add support to Urdu language and its fonts”

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 2671180029

Proof data

Record hash (SHA-256)

160fcc60a81e380865c25dc079bfe9860ecfef413e6913516dcc88c1feecb4ea

Signature (Ed25519, base64)

iBVUrsmhUEec4R8gjM1fUbzhZPCzMHlE1aL+MIG7OWyMuzdloaKbg9zOGeUXLY/zqxRAUho/R6c3HOp2eSzeCw==

Merkle root

f9a030a573da3b674a3e48c677288390a434ca97a740d63af7477bb9b0087dd5

Merkle path

["16093c98787fffaffe0434dded65016cf6f26ef34f3b81167ec86ea2b31344dd","3eab8cef4e91889bcb422f95451e2bb51fa0457031bbdfce6c6068622bf6df3d","b37c7d4b35223f299290cbed4797985386fd58431a6ec7f3fed51ef76c45ad41","0710a6855fc40fab90f2dc45b6e73e2bdd5d59b51f70d86ed8639ef8e8871634","8106e1419d883e5ad78246a2751544249f4cdaaed1bf80829313baa6d89f0641","9b27ebf204146fdff46095cfaa5a339bd16149ec0564e32f7655ae7c00e34c22","478cdcefae021253d9a4c11f7ade057c0efb9265f720a8b1e76adc197465ec79","48461a21c389d63831c777b7e600097635d878e2c61f3982031b58af4eea04eb","c214f92f16bbbfb0651c04be8b6ecc32e49955d88674792978c8411dfbb8e657","89f0828dfc7cba25361084638c6003a46bd485c0b167bf9273a9f8cc80c9fb7d","787a2e6dd721d76816d10e0af8f50793d5797444d6ca6b458a4a3d1b55e3b830","0092e78b615c9d228c03e53096ae4361365857530df283c6dfbf776a613c6526","4ef2bda7f26eed09474d0de127a9ffbf5b18c0b39b7ca05e262a0cf569ba9981","123f459bb0d221b9be08e494016e3b59946d910cadbe6bacd03f308db88ffcd7","e08301f62b5ff22d13e806e4fd3e64913f665178fce99d41471461eca04be078"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2671180029 · entry 108e9186e8c5677a15e7…

Expected log hash

0c7ea517d47f4c8d05e0565112b0ba6c031576195cb596b9212fca396bc97897 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":"v1788233488301","kind":"published-quote","locale":"en","page":"theme:acrobat/ordering/en","quote":"add support to Urdu language and its fonts","rating":3,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (f9a030a573da…), 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.