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.

“sehr praktische App”
Google Play · 5/5 · 2025-07-23

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 3140838741

Proof data

Record hash (SHA-256): a23cc3f53b9e245a6536c1d0f68dccc322dc63114e197b7d7644eda0d801d32e
Signature (Ed25519, base64): 95qFgL2hIhHGitjkHhmDGhkNzWlfVkRUbN7F0WXXgESYUTHXWo46z9A47qFqb7f+DrGOy54yG50hPkC5ceDoAA==
Merkle root: 68ee5f8618d9ce1aa33f2cb5b6f3145b5f909a3c35a03ccc3d10e979b2f81082
Merkle path: ["a23d9d8ebc13e2b336fb3d24fcf86b3aa46cb5184921962040c977fb53b70010","efc08d67ccba894726929ae0652b5beffad182444efada51a4e10eea0fc6c18f","e36c3feec5800d9b325b5262736d303f5ee0173a70a23efadcf7738a2b7570de","fda4d3adb36c62521f1de0f6017911e0fb64024c90e135c88b24abc52adf14fc","7ab1dd53c960debc10ac6f40cf6f4aa38466b3e7c20a25e6a72ca9683ac0d4b7","7958325345e62b3ae98eff612efb1f8dd7ab4ea1a7ce22e9ea2a13b94b2845af","bf38bfb79972ec56a9011529aa7523df1be30c1bb82e84eb7bc9dcec77b904df","5adf882cebc0e4d78127f26029689fd9ff7dfbd42d10d5e1940060d46764e6b3","79e5496714d93560039f783b06988041b3958dd182338bd2c14e997a396f4441","d3cc621448b7423a12768ea4f6c3a2b84e4f57ecb8822cad5f71c97fa8b8fbea","44bc71785ae9a7465454a9b35ade93ddc4b02f1f42cfba699a5d98c19daf323c","d308ed26aa33e6583b9c3bffee658c14c60f68a86ba341920aec69f22e129000","6a51893e356f5237142345fbb4d247bc07582fec6fdaa61c2c3de34a1617528a","d4477c34f5adddf1a37719c473b5e22e5d24c5bd237b4d0a607b953cc77a4964","418554fa0ebde54d6cdcc03145c7126505ed96d3734e8e7ae56dc0dfd8ca0a2e"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3140838741 · entry 108e9186e8c5677a4791…
Expected log hash: ca4949400cf2d29b49789563ea2e672fc73762380548d6fd65398e40c0d98728 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":"v1791433229105","kind":"published-quote","locale":"de","page":"brand:atupri","quote":"sehr praktische App","rating":5,"review_date":"2025-07-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.atupri.myatupri","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 (68ee5f8618d9…), 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.