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.

“It's still new but has most of what I want.”

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 2513802575

Proof data

Record hash (SHA-256)

fa1bbf6e6b9fdee4c6d317c93c375dbc4bfadea47604ebd1f2f4e79104def229

Signature (Ed25519, base64)

p95nX+6/ce0ACJMr7sjq5uUYK8c4qpILhdkqGaP+1VnKMEQ1qjYHkNsWmDm8XSRcmmkDfRC8JQVw00BdpaOXBw==

Merkle root

80de158564b7616572ca0c0059561f6ec90cd5bce49a388e61df989f3f6f2a86

Merkle path

["fa1be3876f72de2b6bb082d337b932296972087f55e7a15631c6bcd68efe4df8","f1bb6390142caacba04c3b5ff1b264d3b1ee74811f3fb41508c18cc138c135b9","43fcf9a0c7562cc79712313ae970446aa9d3d3aefb7e42b0bcf8d38fe3f33ce6","fe7b19f7cd4a0517062953c75435d8befa73f26c348cf06f5337902eaaffbe55","1a944d74c3a79835f1113e524278edaee8e8210cfb023f5233f6aebd3267c3f2","ae9efe7afc3caff7e7857ab973a2a29e5e801c801ff40fc5e72f5b962b80379e","ef38c94f3835d5a3c9c052b53bb556b673428a5a5ba5e7a365d294888e30bc05","0cda9e2cfd3ee0b4225e3ac23dd052d2fc48743ea41c8ac8a31287cadc56eae8","969dcf282b152a88fd88b645cf48d876cd7cdbf30ef77666bbeee83acf98877c","3b9278bcb2f17c2351ea80c4e604bd09d263ffd56c2eb7b60f5e8b5b213e81b4","7dce70284764eeb79c91b9d9897b62a39b191c5d0bad82b18667d2d644a028f3","3313dd0f5efca87d347f162963e654f8f97b434abd08d651e0c6d5a5221a45dd","a005037a25946b6652855fc44de7f4032ae34c31430074646af4b1ad906e77ec"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2513802575 · entry 108e9186e8c5677a9216…

Expected log hash

5899b5d0ea18fa3c879147333708054c2e3cd77662f2b6f633aa3b5d5512bbe5 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":"v1787121142818","kind":"published-quote","locale":"en","page":"brand:threema","quote":"It's still new but has most of what I want.","rating":5,"review_date":"2026-06-30","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (80de158564b7…), 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.