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.

“The selection of books is quite wide and interesting”

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 2525010456

Proof data

Record hash (SHA-256)

fb0b25294cfc937938a4e59790ceb89c5b51e4be69177a82a3c2413613bc4df2

Signature (Ed25519, base64)

niz0YYlmKgJOTSHJzfv6MFgk7jeyqFq/s5dZHFjkGENr5jS/I3x5yV2E7Zpo+S7Ut4m5DDw74zLdXQG2FXO/BA==

Merkle root

c69b412346f0db8d88aed17dbaf2e4876a3743c1c4d16fb306ba56b5c0573123

Merkle path

["fb09d86054c9a7d409b207a308022dcb895ad4cf919325fa9c8958fec5ef7901","62b27f1fff508d15e473d518cd88e3c9692f410ce995aefbebd55c65265d4bcd","b2837e2ef3656738268cbd6852294237bbdeb3839b6f935ff98422a2db71e35c","a5dea73f03d7e8fde1bd9eaef04fa4230efc09720b1e4d280437ec4647ae6bc3","bdf99e562ebc6942353e55671e6f1dc9700b848456a319c981e1359edaefb874","a0687b8940321a00885216233cd9993bab156695cc4615d5fe7f93956cbda2c7","383347d2380356dd8a84fabfb5fa4376e98c711fcdc1cb160ac9f4e1156e3929","c7e0d8fed29e7d7fc2b78df8f68ebe4f1206083381910dd2005d55eebb1a1d78","318658692dd4c0ba49a204793a1145e2d88f0c2cc259ebadf89709a2dd64cf9b","b4eeb7ac9316ef0c91363e08429947c43d9343ef8e2aa297aa2b594a7905e5fa","7611f7d9d45e1aa2559a9669fb320fa8de860ddd2f2bbf9f1750f5870b97c7e9","be573a7f1b72f2ba796f13eca2ce49adcab5b24638217940d33f5ea473838f89","f0a12fd268a34d0f9b23bfa8bffff7480f1f51a4e4044173daacd716efd0fa79"]

Anchored

2026-08-20

Public log entry

search.sigstore.dev, log index 2525010456 · entry 108e9186e8c5677a4287…

Expected log hash

659be4fcc7663b2dc65a53351e16497fea44ed9ec8aef1f3c48c8e452b350dc6 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":"v1787194832011","kind":"published-quote","locale":"de","page":"brand:nextory","quote":"The selection of books is quite wide and interesting","rating":4,"review_date":"2026-08-09","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a782868ad191c8bb2000342","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 (c69b412346f0…), 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.