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.

“Vielen Dank für diese App, sie hilft mir, die Dateigröße in MB zu reduzieren”
Google Play · 5/5 · 2026-06-19

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 2582700609

Proof data

Record hash (SHA-256): 084a07cce366b7da300b693571f3741826ab7c2d5269ba734da7e19ffa8dfbb8
Signature (Ed25519, base64): wM+1U3F4F+KjDIFl2313s5WI6zv8yHLJvqeANirFPyK1mTq8MLB6tTOUPUvnbqEDzQ0Ej3Cl+wTyPEdh0iY7BA==
Merkle root: 653f52f612dd7654074ec2f50a8258d24363de118d24fd3fbb293c3f9466146a
Merkle path: ["084d75049f97bb0cbd2ee0ead238defdea83e905369e3bc86ef79676864caf24","792b29797630c1b36123a624ecb3a7e60abc5ec82a9be40201ceb72d658efbfa","b196ec44b4e39ffe329ce29f804b32d27974b2a0db622c71d84cd0312b3c5274","56c7d9936567cf87443c28b2a12eb2312106242500c71b7d545ac31d6120b7b0","26ec9f4631cbb661fd2c22236a9f3f5e53709272c91b33e210402f6c136363e0","6be8e15f2cc9fa13ad05d9cf90fc88afdb7ba0ee01a423be31f403b9ae92c309","45083147e9cafb60144743318049ff852d182299e9e324de2583e2450fee1f51","5966366d4819aab6cec32f4e49e484a1f181528f165ad257c891cfc9cdc13472","9de042493ae262ce2ada432ab8ce806c99089a134fab9ae1106f08274f487c85","6fc6e7592732ca5bddba993395de6ae96c1bfe6e70807602b228978a1fa30748","e56204f1821ef0eb64f6695ae10ec59c473b495ccd38e242384b49da4e461f80","f20b68e10c9d60c824a39dc128151a5fb0347bced725edc264111d1392a6f092","9fcd88f1beaa69d65dea3d04b431d43ad97368c1462c24ff050124283ec46f78","88e03340b0b23badae5a3021870a121b2e386f6ec4446eb6072186f7c59cabf0","5fdd4fb85b0ec398c42530ef65e986b74edce2f5c14068ba5fbe6a72c94b89c8"]
Anchored: 2026-08-25
Public log entry: search.sigstore.dev, log index 2582700609 · entry 108e9186e8c5677a119a…
Expected log hash: db705c1ce83f047166ef3ebf3406f1398f685221ea16db9703eceb49a1163aa7 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":"v1787633403760","kind":"published-quote","locale":"de","page":"product:smallpdf/smallpdf-mobile-app/de","quote":"Vielen Dank für diese App, sie hilft mir, die Dateigröße in MB zu reduzieren","rating":5,"review_date":"2026-06-19","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (653f52f612dd…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.