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.

“Die App funktioniert verlässlich”
Google Play · 5/5 · 2026-09-15

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 3029042635

Proof data

Record hash (SHA-256): 60dbf92e344537083291b1d516c5e0ecdc36862f956f6e702df256cb11570093
Signature (Ed25519, base64): QSLu0wMkm3kNXm3J4EH4czDiX5wCFdodZQlb/lJ0cf1CnQ7XZ9u1xtM861NMUOkCxCQfPPzaJsKQeT7MCgBrCA==
Merkle root: c9e6077a1bda893f1455402f424b1d526c8cf2f47d428b611fd8d7fd8b45f80d
Merkle path: ["60dbcbc5ef837c2b5ce74a8d6a2dd9373c1892e46cf783c455d70343012d74db","557e7a772dccf804de681c6c37dc5f52994418eadf86c08db710451d6b14300b","b08a42875013cbeaa571a7d498c2087a6d461a3c57602db6b27b52d7463e9fae","1e73488e913feb9443024df7f9f08429603a08a828246e9d83ce4012ccdb28d2","d7583a6cf6df601cf7d0e71f42e2166c30a36e5f978be7a41f4f74c481550660","0e12449dc599cc08747ee4a82df56a9056a234c2e2d1b6c1c47148845b4b779f","de115fadd40d963b791da8f16c8dc1185809787746af3475d814df6d2e88d135","9ed3e2aa416f2abbd03aea717691bc13abe6f27672a13eeb67849c32bbaa624d","1a79411eacd53f0788cc01d2350c143e6856f72f9da048797a91570b22fa1123","98d28bb0486f1b0116b888594b805fbf34e43e2c5b5f6d3dedeb07f85af2650d","e0282d2988d45fd3fe240b63a2a3e59fc933a843a447dc39131b6328cf79778a","5f14be9799ed7e2565a7e43cfeb1ac06b00b066a387141941626f54598d45711","5434394b9627a4ebf7fd63155d59abf9174230c181f6f2ffbfb36e5af0b4c369","c9db0e8749b6887bb580bf4fdb35a1633fc15dc78bce76027a2c70ea28ea9aa5","5322c97ccb72daa49a07d25ff9fa0bd42fe425058f30f6fb1f272a0b90ad3b60"]
Anchored: 2026-10-01
Public log entry: search.sigstore.dev, log index 3029042635 · entry 108e9186e8c5677a4403…
Expected log hash: 38d9b7e95b1b3c998a8128983d818774fe7ee047adb6f05ee608495c2d7aa418 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":"v1790741815621","kind":"published-quote","locale":"de","page":"theme:zasta/quality/de","quote":"Die App funktioniert verlässlich","rating":5,"review_date":"2026-09-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","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 (c9e6077a1bda…), 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.