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.

“Diese Software funktioniert sehr gut.”
Google Play · 5/5 · 2025-06-12

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 3666689888

Proof data

Record hash (SHA-256): 64e2a73a2e46b1db258c84df86e8da7c553dea0589d9635c1d835464ee5d0878
Signature (Ed25519, base64): XsL3XArZFECS+t+6MC1Nc8myguzeE5aXSskVxnefgakI0mn2Yrh70U5zjKJf4lSoZUD6BQaAJIswYwaDJQRoCw==
Merkle root: 2398b9ffe5a3df5012483239ae50d07265a8714a6b9a03ccf48b3559c47e03cc
Merkle path: ["64e24c88e7f94b4dbc0f9cdb57cda874e761d1360ae56d4a21be035e48837d98","9d4f7d6b5a650fcc5dbb61c0374b682ed2cdfc389d494aa788b5c609bcf64731","83eeb9ff11c597a921567b72f35e63e405687a9a5732c01592401532df6d3085","2ee2a2a01b249bd2b48229c37efc9134bdf33fe302f72ac3cef89b7762202e4d","73cd015fb0ca26ad2a8964d0f6678f6def918ffffdd51b3c1a08eaed5b2986cf","8635bfef12eff93becd23a2d61a3fc44a47ca0ca9f4a819ee4a3bcc4e94abcf7","4d3802c26013f1d3d32f6e2f8ca3431023e380fe8eb4cf05dae90e7228bddfaa","14b687b5bc6bdb5bc8cfa998ba1a9da6ad208d6a4b8f494534fc678f558dc741","e7a986f3400fd0768d073e9ae6bc80d44ecc688f80b6795554600d780d11bdf9","627499e550068aa32d52dbe067291340b5ff54d3c6caa4539115bb8c903c7f66","8000ae1d1daba90c87b07012e8fd73761b2be321be4cb718e1e58ba598ab97fa","7f9965405b2a4e80f94f8fafd6d8a80d7977d9c48646b66b983448c7f9223410","69e20c73bdb345f66641353c13ba7e73f98bd05396ec371f55992c40dd6b22bd"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3666689888 · entry 108e9186e8c5677add57…
Expected log hash: 081173480bb584ab401065f32774d38ee3dfdcda0f372573695ae49a257a2dc0 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":"v1793701859167","kind":"published-quote","locale":"de","page":"brand:concordia","quote":"Diese Software funktioniert sehr gut.","rating":5,"review_date":"2025-06-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.concordia.myconcordia","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 (2398b9ffe5a3…), 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.