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.

“Sehr nützlich für jede Reise und jede Gym- oder Lerneinheit.”
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 3138947147

Proof data

Record hash (SHA-256): d229317622e32b8a274729286f59ce684e28ee457bc7127fae6c9433213dbf6f
Signature (Ed25519, base64): 0YzxaY1pUvuG51bdWfnr8JP23lQqr0IB8Il6NJ9IxOYC1+U4nYPomoNxQRsC9ChEOEcWJW3MlFx5zfXcrenQAA==
Merkle root: 1b26d1b85473caad1868633ec4c931eb970e81199eea87926818f3f1753af37b
Merkle path: ["d22b44d5810fb8b80752e94c908a7f30aa001937581ac3c8514acd37bda53580","3c3430bfb8e06fa6b617cf132932b3a761aa5d9efd51470554bfe92495167f3a","e672d4aff6399feb8e5e5e77e90d58e0f378b3baf8257237539991b33951d36a","5d25d4fdfbc84ca6db0fd6e26967e10c99b2a7fc8c83c91a36dade54820321e1","2c419fa33a6d3e3c7111ffa5662f22863e9458da4097c404997e2fe68566e324","14ff9b5aba9e1372732ddb30d85890fb24b1f607901023f3959c27e0d82232f4","bb20a228ece422b19ad30ea5001293c137daf98307409f4ddb2e26a25ae8abb1","a2e17e63c49617f92416c636a57e95ee9a6d80a9618fdf568f213123c64bb007","c555ca4c094176421348ac52e9890b0f41e66c091b54405b671cea6b5108e271","67fce9a869038d34698c18a8d5aaaa5d2d669347dc44701bf1a5cbbc4fc17205","0b2f1483ecf1ebdf5e8e554a990d407afe3619e31e78a717b8f3f255433206b8","7a24fd993e3bf84eda272d8736103975938ecdea0a4735f7dd20272e5426c081","a6a0da628b07765cd60760418523562175762beaea14b25d9c7e86ae845ff868","960bf22ef55c7546ef19790851db978b808b1671c1796ebb940f67a9b4011141"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3138947147 · entry 108e9186e8c5677a2712…
Expected log hash: 8f66b765b7efcb11dcdcf57b81c46ed3317a5895f5b870638e23b76f1efbb2d5 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":"v1791425549743","kind":"published-quote","locale":"de","page":"theme:spotify/durability/de","quote":"Sehr nützlich für jede Reise und jede Gym- oder Lerneinheit.","rating":5,"review_date":"2026-09-20","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.spotify.music","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 (1b26d1b85473…), 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.