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.

“Dieses App benötigt eine Internetverbindung, um PDF-Dateien zu komprimieren.”

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 2582588254

Proof data

Record hash (SHA-256)

08f894f458b8bb177f937f4a055f58ac1d030111e95dc8ef974991a1b43d7279

Signature (Ed25519, base64)

Y9D0z/cCBp2q9U3PpLsuK4OUYnySrNVyJmODWLzFjAaydUidkWHNgVJrpOPbg33X4VucjIUsFxzpv4PxncGMBQ==

Merkle root

6bd03116d1df73ee816d8573f8d87ba041ae736e1c5e0e29e12049d389eb01ca

Merkle path

["08f58e325389e54980c38da62f774825d09c36997aece25f09f6f04eaa93ca5e","8d2e085c4f6dcc6809874cd3531561c9132c65bf93052928bcb34f283842463c","a5e0acec1c524aaa8fcb9334ec8ab1264a3b2d0bd14087ecfc726be64e2faec0","4db3eb84665f8ac05049078f1117abe4347b1809687286400829da0eddc7217d","b846eb4e2b2a80a4943c5fdbb2d1396a38d31c248aa56bcecd202f959c320e7d","9b71c9c6c3a1fad509b2bb149e2dee45d620bef3742616ff017e9761c9e24621","a5fc1b61871a2dd2d05386aedcb95fa0174b15937421f3cb8f4598536bd7c8e8","a362e11576a00034099ffb06b11031d5e28e5662b0f02b52a1320e7d1e7f0c64","b339693588adb45b13b5058472c057fca602931e5b13765cc1b3949550c71607","e220a9eb478582af0062dc65dc553fbb34c5b633406cc2b99dd2ac0e52945aec","fa4062b5b9742da59b2a1b8eef56f06cdedb928f9033cdad6c3b93cebd81c93b","7edf61aadbe6b4f9fd48fbd7dc1e8d8957e01ef9f4925a0b74d6dc4d105c8407","be04fa10c065961516fbeceb06710578102f1a0d8b858489c7b3e5b02db19f29","9472f21a5aa921bfd0c2769d4cf925e02a01393b600a7d25900b0e047e3399c7","ce7feb6c28bef73166d5bcad2419a89447fa0c5afed564615a586203d1723fb4"]

Anchored

2026-08-25

Public log entry

search.sigstore.dev, log index 2582588254 · entry 108e9186e8c5677a9d8b…

Expected log hash

70017b2fa4804efaef56e3a9fac6e10ad86cb0524c0c60b33fafc6203b9572eb 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":"v1787624634880","kind":"published-quote","locale":"de","page":"product:smallpdf/compress-pdf/de","quote":"Dieses App benötigt eine Internetverbindung, um PDF-Dateien zu komprimieren.","rating":1,"review_date":"2025-09-06","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 (6bd03116d1df…), 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.