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 don't know what the problem is.”
Google Play · 1/5 · 2024-08-19

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 2544236959

Proof data

Record hash (SHA-256): 68f2d904011e050fbe2c6a1e208f7c4e698ffe4b87ffe5c2cd381e1c0260c762
Signature (Ed25519, base64): LVYyZczJsLONnpmJGsS5bSOPPGhMVa0v2FxWKR47YntnMbiKMd6LJ8pdaT0OUP7DZcIbkMLQRVaXT1u+xmkvDw==
Merkle root: cc942239c46f13b1af6cdba0960a24a6cb62e7a7a462aae1e8126c0182dbffc3
Merkle path: ["68f1a431dd9ef3d64795550ece4e575581aa436bae50de73b865d60c9c6ea378","f228169056aecf703edf24c8cbf7e66402391954eb8ba99da2daf7ab7e639d31","cd851095b8b853efbfb446d21dc0f89b21e01767d37fbff986bddc53ddb2a274","b713098541be97d97154920a132f3b51ba9be1fab653aa79dbb10248ccc229c0","ed33f0d2bba035f14bf660c5e502ffa9bbfadfc67587aea0b23b9c508fdb24a5","b0f299a4a43c69483ef3c02f814d95625bb2874e51f14d9914dff2714ac18e0a","af477272398e70582326a5e1a18647d11a7355896b496a41402d3ad800971565","ad856bbe482a5bfc79e67bde8925e362ade99bb9a6a213acbd96d7ce0f774e59","b9ac3ad2efa2ff05ffefe204da8753008bd05b2f3e1f14dfcaba9c0fd3690867","0b2afffec39f67a5d221d774e615e74433c22233d7aab2d58902a011e0aea1bf","dce5d82bfa66664a768d33864896df7e1161dd73d00b6d3268301022106cc4b9","ef4283675581cca5df9a62291fbad7119a81aefeacb40c5ce98e9cfd5b187b88","775dd8d6e832b06f7b7ef77a85216bb9af7105f607664e433fc30abab21ec3fe","9a1346831517d7bfe15c9cafe704fcdd7e5320eb2bcb608a630afaaba7d67d2d","f25e568e6bd90a5619f6d6d975016290629a8afed06b80200730e4e12fb2d1bc"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2544236959 · entry 108e9186e8c5677a0341…
Expected log hash: c82e13ba2a716d66def44df55ff50c2e9db35da204570a7fd5650a8bc2702db2 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":"v1787290890795","kind":"published-quote","locale":"de","page":"theme:threema/delivery/de","quote":"I don't know what the problem is.","rating":1,"review_date":"2024-08-19","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.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 (cc942239c46f…), 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.