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.

“echt frech, von Adobe hätte ich das nicht erwartet”

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 2515033577

Proof data

Record hash (SHA-256)

7c4a5b9f0d4ee645566a135882e20728a249076d64b8093319fb3dae9f004285

Signature (Ed25519, base64)

ro/DIgYacUt+G0auu5BEZ6PDLYMBdlIBaoWfDbLs0zZpr/cDinrEwd4qu+j5YCthMlLQDx8KGYJb8fHlxPDEBw==

Merkle root

62390602d5b1801b2c96dd61074fd5810278db65461e368ee19c9bb147d249dc

Merkle path

["7c427e11184ef7894833dfb45757f1be2d628d85270aca768d4b760b6c8903dc","db09c34e3e65090e1c2f5d47b36b466bf6118f1c73aec68af015ea6ddd8be0a4","052bd02dba35d16722d79818a286add9b979a6b51b3b5bf860f6403582a63029","81fc35b6cf261ff47344c5a44305a4c1a3ce81bb7ee9aba99b5ad4f7e2da1b63","b931088459c120ad772b3d99f5db047e11d3322decbc52a79141a5e97515315d","576b0e16e1cfa3082d67a662a71f50da31affa41d8db6ea716b18b390b6d2181","e199dd32b3c629773022607c9b00230621c2db0f2fb98f6f96c9bfb9fe1f23e7","634e7df9a1020916853585df63ea23af40d31bc4ca6548ccaf0d80d7a0c56e75","0b42a649f537b9107ad11579974994fe2626d0a04090b626120c8115b4a360d2","29905f61d42d3d1e02f7cefa737dd203bf0818f2b20335659bd40d372b1e9797","06494951d874daa8af8a91180dfbdb16187728b976ec228fcae8f1191827e503","28590a7fef914fc3408450c099771c57ef8b12c59859a446ce0372c80428ed90","a5b0f88103dec63c80bc1707eab835572838fff5f43aed265827460436ca21e9","baf7c3a9a57269bbb0661385ae981f5f3219ae8da84a7502572e283df3bc7435","9092fce07a46a5708f071a70ba5ae2d3ebe27de5e813ea1756180e7747d7c5d9"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515033577 · entry 108e9186e8c5677aaea6…

Expected log hash

458ac564101d02a2c8a5f98465ce4e920300682f0855e017234ab870c48a16cf 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":"v1787135948936","kind":"published-quote","locale":"de","page":"theme:acrobat/service/de","quote":"echt frech, von Adobe hätte ich das nicht erwartet","rating":1,"review_date":"2026-07-22","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 (62390602d5b1…), 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.