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.

“Thank you for creating this app for an old lady like me.”

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 2514851395

Proof data

Record hash (SHA-256)

f9e1ec589a896524d228a4f00af128ea160595b0566404fd3cd5e74f0e64c2ba

Signature (Ed25519, base64)

kE134l2oqlZtHo78eDXW58k6wle6WX3ZZZTP9wTqn+BNh9lfxaZX+4CDQoKArb678eL2nIzc9rpH9kDmKGI7AA==

Merkle root

b6da35820db152d3d2c0cee337545e3489f0422a146fcc8c60737b1d3a3ef55c

Merkle path

["f9e18779a6d81f4a8b1d41363a2dd6c10c0a5bf135071e104aac593863256435","d986cabf780f437ed5905cb795d8c59853212100fc0a722f9019b6e676878f8c","9ba2ea6190f5ba20789ddd3c22bab054df60c36a3cafca09b2ad7c7da18f8fa6","5252e22c8449f488459a30df8fcbf3b3e00cd6f0d40cffd3e90007a350e83f0a","4a8d1a491986de7e224b8206582930d643c74d0323c2e164ef6a4e68625369df","4161c17ed7657f38160dcebbc050533b4396425014719ef85accc57ebfb580d0","a791ce15b3508b8fc5ff8ff9ee635965f3084fa3f5ef48191c9fb2a07947d1b6","cb7074ab2f649067c650d364bf238f9dcbb2e7590caa22ed42f6a41cf2ee2ecd","a98258bd9f8a94e32acdb6f2ef42459a9dec95031de7c6128475f4ef294ab8dd","8031c6ac315ece16154dfb1f96e696aa18170927af7b653b380696d5c5c2a88f","957170d24ca01d7b90994df4a844f8fda61c784f04299f7c012a09472fc9f802","4ead2e48718cf6823c15813aaf31284c132ede1f0bf5c465ab4c472e9d95cabd","224859803387e2d5d55f4d99200baf1853b57ca9280b91ad0b25d9ec06abb7dc"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514851395 · entry 108e9186e8c5677a4f62…

Expected log hash

687a04ce8b1c63a953fd353f279012a3ef08c4ad12d885582b1b6ee85d05b900 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":"v1787134378129","kind":"published-quote","locale":"de","page":"brand:luminpdf","quote":"Thank you for creating this app for an old lady like me.","rating":5,"review_date":"2026-05-28","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.luminpdfapp","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 (b6da35820db1…), 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.