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.

“You can't send an email to Zasta.”

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)

bf2771303a07a1252820fca9e66eab8452de82a2a78a1c62e2e5b3645e81159f

Signature (Ed25519, base64)

n86kPk3lf2wi579R+YkzlQ9oNRd3zRX5vqMUSgels/MQyTDMfdPRQJNhAVmjfz8obviMww5EtivdWNulnozFAg==

Merkle root

5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd

Merkle path

["bf2d39f6c6a7940d73ae17ab0162a3eb2b0b73cbc62d377059471411b79812a8","094e4f1f94b4c057817fab2404f59127829a33c8ccd2c7e84bffa02d8df6cd40","0b8fd5afeb519bf42161c9462e0d1d3bbfe0bdeea37e50331890e13cdc859eac","44db2d9949f81b6935f149bb217ff4f764d0e6e9177d10d2b2e2b481fe31af64","04dc92b006b61dd9744973044ae6856b9b783a09c4737c8b1802dfbbf9f9a9f5","27b43928c580b6fea125bd14b558e0eacf65a3b0a18754b5b159144ea508a16a","f57ea61d41a5a1fe3b129fbc42748e873bd71798c84b8fbab9742954edc769d3","fd6815dbfbff3729b1fdf49317fe994f4f462a48c43401617dc79d75ca7ff7e9","fa23b3c90dda30246c7386c661e1308da86a71dfccd064bf5c65cf4bba8bd99a","4a1378f1a9ae041643227fd2efc542fe33d9da546ddf5cc368616f3063a75292","a0c895b31ca62e01e1f7a54d72e314d8adf4bb80cc0dd8de7fe86f0a4ba9762c","0a9a33c75948420bc9c46c8097da1b06f4fe152fd5716276fa9112799a085a6f","108f3d171e4ec3a22d208fe56e34b1a576bfa9e9f8a046f3c09e78ff42b08593","468adf75cd56eeaa89e39f50b974b405db9921529d680bbe88ff0d1caae6f316","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":"theme:zasta/service/en","quote":"You can't send an email to Zasta.","rating":3,"review_date":"2026-08-19","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. 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.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.