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.

“Best ever app for reading and editing pdf”
Google Play · 5/5 · 2026-08-01

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 3247835674

Proof data

Record hash (SHA-256): 19c242980ab181e9d6cd66466b20d00e700485198f2ee62b0ad6d39fbae6352c
Signature (Ed25519, base64): lZtpQCwp3z3aEj6t6wlhY9ynuPaKvmT4zHKmUWhiIAgAs3tmMTnhNHpbay+QS5kY2P3H0CSm0dFV6MwHF8HuDg==
Merkle root: 8af5f2f3f65c47a75dcdddbf363e3e76b22d37f4e953d150fcfa3e84bb04dba5
Merkle path: ["19c4519a0574ca521981d52f4f7779f449aedb282292fb3412169132d0c73501","896fb66689d30be677fd26d475c6bd7c31c54e928289d52cbbe4e726c0d782f3","57572f923b096438b390f0ec47bf1cd4575fb4c302c68395539cd134ed5cb1b9","4b53e624fd290abf9d546c8a1edd1660123d2e240d88cccf4b523e9ef3ecfcbb","530567882ad538b1b505f2fb9da24c7bfd04384e720b6283a8b89defb1ef4cd4","06050ad0d8221a0026f40b26488cb15260e6c2c0f29f3c808d517c546932f2b7","be40246bc3ecbbb4389ae974e2b5243eb34debbd5a1cbffdd4dc3c1bf197c9b7","1ced89c3ad1c33dc91e7ac72b0c2c1eedbb89ad40f594477fb2653c4474b2607","1df10e869107267967b3a8eb19f66e4173d8da7da2c72467c05f4f35ce54c0ba","0ff4dccb3fc9dd1b67a491058d8dff675dff6582010d8572b06c7bdc1d73ce56","cf3fd672f99fd3a12c561632c0bc7eef648128cb12006c0c959d1eb66b0780a0","69e0b278fde36472d775b547f81c80ab6a46676326bfbd973817b55dc3255d09","2df4d836b73633f71fa96faafac3d9d32f00951d180b99885afa9511763f7b1f","2212eb5ff51e97198ac2cd6542275dfcf712b9be9a8fab294a9bf844689bcee1"]
Anchored: 2026-10-14
Public log entry: search.sigstore.dev, log index 3247835674 · entry 108e9186e8c5677afded…
Expected log hash: 306cff230c51a4aeee6711c8f2603eb2af6985e8dc9f5dc959efafe3398b8caf 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":"v1791944613264","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"Best ever app for reading and editing pdf","rating":5,"review_date":"2026-08-01","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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 (8af5f2f3f65c…), 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.