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.

“Ich wollte eine PDF Datei ausfüllen und signieren, was nicht funktioniert”
Google Play · 1/5 · 2026-06-17

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 2594412582

Proof data

Record hash (SHA-256): 1e317c996b2026a654c49fdad4b2b8cb28c4e7c28b390a9348e032542b44838d
Signature (Ed25519, base64): 11NbG/wEvy30NQg17DBPgionanCnH+LyuJ4xAuwlOD7NMUXULc7R4SDr84KVf0XM1vRFBQOIDeJRmp3TAefLBg==
Merkle root: d414e521fef9d6d099989fa0d693684c20b42a89a12033fe1adae5ceadc28160
Merkle path: ["1e2ff94aa6b70ae8f6f3b235c80853d902fe3ce00fca0e200f1c0a761389945b","d022dfeaf88d38acd909431fc953adf1f7c94061f7a916401ebb6366dc9886c8","581570a05eebe929e81c45c1f7e25f15212b98ba019232d4407d8b73f20b76df","f145c5aa55bbf9e21081a7f50f6994c4b03b25070d82a559fd2d28703d61b508","fe28069b926cea57796353ee1754146f1daddfa8601820bcad1eb365690d81e9","97ed13cb366b146df22b02f63dc6d5782e960cd29771be854f04f1cb47d98a26","c44bc957a3e75ac73dfaf9a0837c99ab177a9cbb8da35f550e90e8494636c431","e02a7bba821bf5deb55bae7babc0ea9adb1abdda74d6524278aaa1f26556fb11","41c03972e519b86637ea457cba3421d0063b0bdc478c3d2270271f11bd6913fe","961dab7146a15d36f42e0a69cd4248829253eeb316b95171da525f2807aae96a","4d0ab750d2057b0cc7843655890ef898250bdbf9ae35bfa849db8e904d79b8f0","7e15e3e6823fa71d9256051017b12b31556673ed050a45cdbe61dc5522e3fadf","f77efd58ae82cd437163ba9ab021e9fb524c058feb0d1f3bc5d429c056be2720","dd85a03194c1b09d93a4be119d3146825d20c9e375d143636eff256904ff3e25","d9bed3bb20fbc734967be09c1cd24ec9d5bb72fd1e4fdf84e6057ce858f8bc78"]
Anchored: 2026-08-26
Public log entry: search.sigstore.dev, log index 2594412582 · entry 108e9186e8c5677aea33…
Expected log hash: b1897d255cf944fc063c3044a4546ab02c40327197d891ce843dc1c45c2dff03 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":"v1787713855428","kind":"published-quote","locale":"de","page":"product:acrobat/sign-pdf/de","quote":"Ich wollte eine PDF Datei ausfüllen und signieren, was nicht funktioniert","rating":1,"review_date":"2026-06-17","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (d414e521fef9…), 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.