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.

“scrambled my pdf into complete nonsense”

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 3247778771

Proof data

Record hash (SHA-256)

0439bbc068f79a87a9fa9d1d12734bf9efb91c68e42029de532a0974618a5060

Signature (Ed25519, base64)

gsHN9gfz8wSvBfU2KUehofMm24vu4pvb6DRFIRM+2SMrIgsQk3VoEE/J+yaCqK1PBtd0VfilcXiVb93V770WAw==

Merkle root

85ce153ffacf452dbbce3fe1023cf2b1831b0714a52ddd4756cd932ee6118eca

Merkle path

["043a1ab261852305d6569c404a352df9dcd33310e27358ea7527a5c6666e1258","d6d19d00ce754c54206970dbb0e83e3dd2b261488e393b662a3e748122dfcbf3","16a379fd7d7acfc6e21b5dfe901417f3dd603c95d5f3db47c8b6f141334b4ad4","a5e367f2bbc5590425b79352c231b00ccbeeaee68b0076d60409c57fd370b47c","8a82034577166d61ff5819fff6e82d06d57a1afc08ae5ccc2b59e6c3965843d4","7fd2cca456d00280d7a9a7299284e6b3f4aa09840a94c265735d2e63526175ab","1c8635746632a1d90548439ccb5c02efb1b0daeb5187283068e7e600abab3d98","4c8bea9bafa3462fa38b77a10960942bceb3ca8218cc3d530ac76dd8cbe6ba1f","074e2a3ad48f6f2a01443ffcbd2650dbf51b1e65acd87eefaac5e80f80a3d611","71d558ff6fe5082421ce32e9c6d04e500246d82f6253c55da5225c683ac39f8c","4aba4c8ff1de29ad0b7aadee5c2e476818f79748c266e2c70c52fb9d0ff85fe7","6c2e1c6197efd563c8b55fe8aee10bf08687b45dabbbd2a77d804d15e7fc26bf","18b18f071e9c71d8c36d555f1bf037316eae5e015564bc049869377ca5d7af3d","18e09dc9351f249cc916f25a12a638ff411aa18455e8056b5bab6122f75e7984"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3247778771 · entry 108e9186e8c5677a205f…

Expected log hash

d4527e154b8f284d35adc456cc8f260840ef237a57e84e3d79bf64cab7ccc901 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":"v1791943580112","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"scrambled my pdf into complete nonsense","rating":1,"review_date":"2026-07-31","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","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 (85ce153ffacf…), 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.