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.

“Zasta is a reliable and user-friendly app.”
Google Play · 5/5 · 2026-02-04

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 2948162176

Proof data

Record hash (SHA-256): ed7658df54a38aa9b8dc00a65f71bc861f69b5ef27caf0408a25cd1c7d5d4c92
Signature (Ed25519, base64): siYpEwb0x73jt4n8S4v3kk+AtUnj8LTPyGdtQGr3Kd3gvSD1FOr0Wo9+LpBuJpI9hXCghA1x0it8HhYxoFCyAg==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["ed74d26fc3ae4a9620c562bc753fa203206c2ac6a91e12855a69893c04fdcc20","2805bad505b310e590f79f8d78b0c8c91edfef4de1a515fa1bc54f7bdf786150","a8158ceab236f6381464f0b4790ccbb77962942d9e72bd1b8f3b4211f30a7c87","19f04c9e07306f31531b19c48d608ac29b59fc17194a2c37eca758c2fe021165","379cbd016ac085bcae4fd86f728b925ce7f09bd62095e0e47878a2b9ada0131c","7507937fe0fd47c0f518fada8e1758bf3ae64bb18065e4086a727e5097196822","8cff9e9e5ad764429dab10c9df3136ab2a4febdd1aaf78ef20b8cba24ac1e857","befe5d63cdbd2dbea50164635508208e760746c00d96b1156237b9f376938eb8","5fe3f1881a6ff0eaaaabcbf6d98204c7ef287673f36bb5094129ea0b57304100","f8234ba771f3db3a4cfe5e767cf54133ad7b47b59b4c56bda854a13ec08fec4c","2a8f0b0b95bd86a288df50f77dcfad4982fa6950e7aa200590b1675cbbee4129","dba69485f1d01b1a1a0b025a8d16147fd90f9473b16d200f26c0a34e7aba2d46","82803ae7220a028dcdfe85032be69ef5f73bd7602fcbe12652ec0c9b240ad883","aaa7b399bae700ce8013bce7d22a5956b227f2e0adcc638da32f9fc5e72da67e","77ebbc5a767f49a9f64068a716a8c843de0ea8d44adc624726bf46e2e415a41e"]
Anchored: 2026-09-25
Public log entry: search.sigstore.dev, log index 2948162176 · entry 108e9186e8c5677a61d4…
Expected log hash: 5ff8f25b7934b5d72d363d6805344624efba4d637f2c851f11783b259b9d81be 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":"v1790226990092","kind":"published-quote","locale":"en","page":"subtheme:zasta/quality/user-interface-simplicity/en","quote":"Zasta is a reliable and user-friendly app.","rating":5,"review_date":"2026-02-04","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 (539721061967…), 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.