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.

“I can only recommend Zasta.”
Google Play · 5/5 · 2026-09-20

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): e197d9e20a6aab0de34dc7d31e584ce4cba301e576f6493d92d0e40485405f3e
Signature (Ed25519, base64): lEzQCgI5lR3J8r9U6G/qaY+nnOxIACbFktP1kb0PG/ZLp6Zqo/aBDnbkXDgIEWKwcdUZxVktsRCLqOzvYw00Cg==
Merkle root: c9e6077a1bda893f1455402f424b1d526c8cf2f47d428b611fd8d7fd8b45f80d
Merkle path: ["e18f446d52351ba3e9449b9eae86feca589cdbacfa3ab667c4d75d1203fdd20b","4fb450c5b477b2b141c7d2b50770f9eaa8603f536ccf6f530f3f712d654f1dbd","c6b437183863db1fa1356172cb0eed2e1848a3739fb129f24fc92185d46451c3","04b2cb1babc40d3c7cfad40d9c004336575c33ccb0ea40e30541d252c097b9d7","1101e93e2d5cceb87c22e1e2bb157371cddf3695cb5b6af1a6990f279f6d3ab6","e4cdb908f167a91a61f1ca39df7b3115188a33e6b33c19c16b908b630adbaefc","32a77fcfc0072b90cfd1bfba35f25a7bd44b40e2b49c83a8c2bb07d89fcded8b","6137d51a06b451fc63bbb347c0fb25d595bea6ba4804e12593262434ede985e2","87fd8555995cb250ddc4ddc9dc3939e6f4fefcfd61f49599b491c11fd5f1af0b","7711ac7274495aa3f62514ec6224e3cd8b5b742fa5ba4d78ee3dae30009134f6","6ad196eb467422679cd701785f60d33b3dffaaa0b2e705d073b4e55fc1b24b65","783c294ff450ffaa3294464b39443827adcb73f4c1af17895b1425821db43956","28f09febe910b8ffeefe28f4b3e25d4946f6ec33a76812b567df1654abf1c9b2","595afa49ab9420d8429afffaf39a6f4725518c7a8b9f2c89ac8a7ee0fc958fd0","e91b4f1cf428f19a0932cddea6de9c1c364010417f9e244d933b133a023a7aa3"]
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":"en","page":"brand:zasta","quote":"I can only recommend Zasta.","rating":5,"review_date":"2026-09-20","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.