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 couldn't edit text on a PDF”

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)

6b97516e9d64a0761f4c0c2206f8d233abf4fedb7c1cc7981f194560e0f749e2

Signature (Ed25519, base64)

TCH5GNxwyBByn2e0teaEKyZ/uRu63zwdJSFjzluG9l3//tZ2Arc3Rsz8VBU2KbwwH/aa6xP06pDgehvCstbJAQ==

Merkle root

b6da35820db152d3d2c0cee337545e3489f0422a146fcc8c60737b1d3a3ef55c

Merkle path

["6b9a919e304a006a2994eab6b86fe82794a07b23c75f0ebb9148bc44609e7259","32d48cac0f9dde6cc90efc939642d9fbe9570981a93224092d8c3574a17a081b","d31b82f4526ba2c824e0df86e6d1af8e15cf2f4da55a04a2022dd2bcb620b5e8","03149cd91906dc8c8433ce23e717bf17dd0283323907ab8876c26d4ca5bbc760","fee53c88df6164d5b90ccb1d9aee4557ae729c4a143db5d16cebc39870e254d2","5a9333363196e01603994ffa2af0b741c3efe5ce18468030df08d13337f6f3be","d0154c79b0c3b67d0312e83da06aa4e381b3919e8f190f19185e1f67c6e5b014","07269471da4bb87024419d670a858260b4e6b1f1db973c07f89dff053186fbb3","84a2bf1feb4fcf6a950ff78603914acef2f2d3f1739479e54a102b24079b6c1e","deaa0a1fe57e9b8932e9295def1bfaabac6e1d81f62e809cd575c408aec57fc0","7281f279cc9a8452670fa9a12ec35fdae2e72c841be32857fd0db89930ca121f","04087565ef2bc2296fbc1a825b280fdd722bb654bc60f0b5bce5b348a7793e47","7683d5d7c88ecec7a3b1a5734816ef1b47ef9cb2b169a45f71d75a399897983a","a87bd939a3ad0796a8d580dacb2c37af7f713a77a0e4e7ca6c95f21a1e1d62cf","c54d917d90cf6041da53ed8de4347323c6a7de99e787dde7349330851a57a3d5"]

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":"en","page":"product:acrobat/pdf-editor/en","quote":"I couldn't edit text on a PDF","rating":1,"review_date":"2026-07-23","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 (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.