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 spent 9 € and it doesn't help me save or sign anything”

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 2525010456

Proof data

Record hash (SHA-256)

10a0766b3d05ab14eac2b1481538d86e9ead5806c63fa7e3fc2113da122b3d57

Signature (Ed25519, base64)

kU/Iuv9T3O8U54t64IdTfKrdJUVNh/T2c+RbAk3cydVDh8E7xMStRyUDSIZpgAV+HYGSpFoC5ewi0RREmnpqAQ==

Merkle root

c69b412346f0db8d88aed17dbaf2e4876a3743c1c4d16fb306ba56b5c0573123

Merkle path

["10a096c0051ee7df7f351ba772525fba6d1d0d8fa17e0bdd1ec84ba96e0567cd","18309ded45850bb1ff409d79c49e886bc094615b4f7d3ed46acdd2a28ec891d0","06521fa3e87217e526928a6d8a61f98876f6dc82fab8d61c7e79770e53bda1cb","a3580f1b81b4068b0e758f11217e34ff4b77ee048479aa8a67995c79f02fe05f","b4a7ccf19a04c2068e0f1f902ac5bd0fa2b48462dc524e992c6ef51b7033280a","4d52c4258a0b3baa6e6fef4e5fee5666b72a96ddf7b770a3fa68ff295f9d3ec6","9365c9b290b9bb1093e2012692a3314176dbdd30fdde74041d474a4993ce9c92","18818e7c4659f08fec5d3aba92b18f4f1fc7f013a74dbd88c26fa89c9e1c2e04","eb1d055c78c078fd6af4b33a9f21a05a8dde452278f5ef771244fe17b75610df","1e2e4c59de6d2e5fb3b87a002ada59e93901191bbe969df6bf860136e9b19a6a","3ecdb6488bc871dee592d07d294f888284dd90943caa250d8408a88510e19f35","d2ff7fe4617f0faeab86be5a07d9e5994cb2c5055379e39ba5f38bc3f21c4e08","09997fd9b1ef8c57766815e6c9849e05f2447cb27e8d805273108da18c60273d","62927e8f71080777dd1935c21221e60b742dc0377a31e2f20a0a64cf6c3282e8","3da38b679e2392986aef224a332d14750fb3a22c4e75287765e8f68f575f24f3"]

Anchored

2026-08-20

Public log entry

search.sigstore.dev, log index 2525010456 · entry 108e9186e8c5677a4287…

Expected log hash

659be4fcc7663b2dc65a53351e16497fea44ed9ec8aef1f3c48c8e452b350dc6 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":"v1787194832011","kind":"published-quote","locale":"en","page":"product:smallpdf/sign-pdf/en","quote":"I spent 9 € and it doesn't help me save or sign anything","rating":1,"review_date":"2024-09-13","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 (c69b412346f0…), 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.