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.

“Nach einer Weile hat es komplett aufgehört zu funktionieren”

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)

08e51313a225eb95892ac66d44c899f425f44ee7de50d326f3d0461fd2b053e2

Signature (Ed25519, base64)

5BPtJ10kMzucLH4AhwLV3jQCd7ocyvj/+Da7bW+ARte5erfE/UojhW3gJhNZWt7NGP34pGZ1KooTCBQ3TLzaAw==

Merkle root

653f52f612dd7654074ec2f50a8258d24363de118d24fd3fbb293c3f9466146a

Merkle path

["08e0ebf9ae783fce5624611ab97500aee39c869300a387fecde8b06465d9ea7a","a793e816ed6bde6d9cb960b027ffc07d9240b292596c85b1650e41fc16481f4a","f269e59d982c4d3c3b1c8f66b2c99269e5cafdd1764487891cd016ebc71d3f65","f24d5837d771a3ab5e2c9850e71808b2319f2117045701c5d3dc40945b89098f","ae9fdb33a7841c7a2700d550396e680ad24262fab3c84d000215a009dc93d9d8","8a25b257831e5b1d17b473a9545bc3c28298809e85ab1c931c42e08f2be76228","7e9f85275aa04c77f1c68b900f39ac9b455078b1ee8676ab91c9a2416150f78e","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":"Nach einer Weile hat es komplett aufgehört zu funktionieren","rating":3,"review_date":"2025-04-13","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 (653f52f612dd…), 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.