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.

“Großartige und nützliche App, sie erleichtert den Büroalltag.”
Google Play · 5/5 · 2025-10-05

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 2682517241

Proof data

Record hash (SHA-256): 14c07b669d4224ca401d813d85846917d06d31fc658f038fef3f6deb676adbc1
Signature (Ed25519, base64): OTi/bDjRihF8QW5lOrv/mCcYa/hbEb0LCvumV4bpVYVIbbkTpusRAr6vSZ3Jl7+gnSkqbeqzWBHtqGtco6EOAQ==
Merkle root: c280d9ed12ff4c0b3255dc7898b16f1930cd4119f42946bcb4cd68d076a2b332
Merkle path: ["14c0312c7e8fb56eb33d0456f4a4b0db0951ebf59fe3937c72fd25ccee7eb2b1","b06c27c89bfb0c81c060e077a4eb69710d85b7d87c3de7cfd61533623a9ce34a","9607a3479a93239bab4874e5703cfa4edcc47fd048bbdb55ce40e46347c493dd","bbd5c1fc61b25afd879c59d4017b8849dd9f952eb2833b60f3363ec2e97218f8","00507d90b3534741c30424a42a849922f995339e6306e2ef9ce04e72aae69d04","0caafbd35c4df08a186d0b665d67cb95e20ccfc36d3066131a5510af17b9f8bf","47659132213442a234db1428139f61d2af2379a15a0d13e8f317fe673a0e5854","f59fc4bfe387a45f2a8db7d7d3b2cf5c75b339a948a691f31ce9c8602635c214","9e1bd4f8fed3c04c1e830963c270ec2b56d7dc1fb02af100732ee833c53fc8d9","a936c478cb006020f4baeb9cb2c7a7724c4ed10cb1a3f8b3ebf23d10a9dfbb90","e3a79915a3879ad8716dc470587747d333f9915bb4463272f8889d94bc3cf160","472a46e5ff22ef13f95849371f5e56cbe4eff8ebf99e8a0d25beb8257d4ebede","420b89a5765bf5e1ee3ca525653a85d95f68d0a5f95e1e3aa883275c5f706eff","1bb9d77697b03c52c52f610920bf29cd71b9d55ec5c24ed66e499e51e9290526","318e458e36dfc92952cbf790d510c87679554507275d835c305b6eafec626494"]
Anchored: 2026-09-02
Public log entry: search.sigstore.dev, log index 2682517241 · entry 108e9186e8c5677ae940…
Expected log hash: 4dd627b405b5e14bbbc331be73be3f78a12bcfd7daf600ed87868080d5d2f664 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":"v1788316240490","kind":"published-quote","locale":"de","page":"product:smallpdf/ai-question-generator/de","quote":"Großartige und nützliche App, sie erleichtert den Büroalltag.","rating":5,"review_date":"2025-10-05","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 (c280d9ed12ff…), 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.