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.

“Mit Experten keine Verbesserung der Rückerstattung”
Google Play · 1/5 · 2026-04-15

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 2890214870

Proof data

Record hash (SHA-256): 4e53687de7ff2bece16cb9c132b5b56da021200d45cabe4acb17aba04ea9af36
Signature (Ed25519, base64): 5yU6YVRS3KeInGTJU1BwX1Pt5WMYBLTtGQIm4CCGWrpgvKjjKdPcie/rUx+/K80cNh50gkggtKonli+pgqQyBw==
Merkle root: 04b39eaa56e1cf8f75dc8eac18bf6942167c8418ea731a7471223f0be60e3e6c
Merkle path: ["4e5203762f9a5578774315b86b64d245010fb508077ffc1cce46ec67e0951dff","e3ab8bb9c6f4b5796698abfde37a7ccb606d4e56c8d6e147b7762bb865564654","6fd213e7fbc0013b4c06df0b2d786b9438bcd5b54dff8c4b2f6320af5d29ab2d","d98d261371f5db181d2f1a3de9637794784439ecb08afe12086bcd983c0877db","527d76a3c6b2f4449dbd0c19f9c695067e1c2fe992559dccf6bb47544192801e","bfcc3633b668d6d543b33b8b24b7f59889fe5d72ed9506e244f07883965e4b68","22dcef3b25bdd61fc9eaa348ce482a6acdb15bf65a62df6c0512770493c2f74d","d905fe38e070d77a7193bca5edf6cb50092f4548822658b080e77499dca4add8","829f7a964c2aa5ca050b26ce6e77a85b81a8685904da3f320315ff5f7d4820ce","92e3385b29532ca06cd017fc6888730ccbadc240c1504276ec80745df98f38f5","f0595b91093a42f963c5f4ccbbd4eda5c3fa85d7ea8db8604cc0983281b111fd","dd759c3bba11d3e1478fedb143fcb14237bbac94f760c71aba28b9f5afca77fc","858da9c5e5c810f227c1c3047d0873181b65380781d4a4eb884968faf30fbb8e","c5cc7ab668acd70733708092004f0624164aaac2bfd55cacefad6637b26146b8","695aed3f647000e14ed985f8c4d6045987ffb913dd12c814d6f9a495d4d25fd3"]
Anchored: 2026-09-19
Public log entry: search.sigstore.dev, log index 2890214870 · entry 108e9186e8c5677af53b…
Expected log hash: 1f3acef0f063246e051bf412e40f4279cb96ed334ff7b0647a13320c1b31c4fa 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":"v1789722569406","kind":"published-quote","locale":"de","page":"theme:taxfix/returns/de","quote":"Mit Experten keine Verbesserung der Rückerstattung","rating":1,"review_date":"2026-04-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.taxfix","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 (04b39eaa56e1…), 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.