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.

“Habe drei Tage damit verbracht, meine Karteikarten woanders neu zu erstellen.”

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 2907673729

Proof data

Record hash (SHA-256)

9610dcf3d4b9193599e2dcf5758a1688aa98b06d96813ad5b983d2771e5cfa61

Signature (Ed25519, base64)

+oq59VFlMWGMT64aFmQGCmUWjbiEBsK9o42wzaadPxhNHe7v/UGO+tZebWlfmAWBIZQ4gMVFaTbgK68qLZxTDg==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["9611cc55e706c5e7b378d33fdf670dfb79a11c8ea8e5e972dc4b88e6169b78cf","b771fdc3fe20b5b5573ed7be813c8587ae263babd81e45d9458eba1d0b1f4a97","b07b4181e77aa15fcbade05d9f0d97a195101801a6fa0be8674c362d003a59b2","cdea82957c708f95bed95d7cee864bc883bc1babd2678c96cc0d062bc25c8b4a","83121f490f09f9be3a66eba44ccbb2e5843c24d4b1c47188973ef58cf9940295","5289b51482b876aa47e8a9faa244de0624e25a4feb84d901d0268a7dfdff6880","102437016f97ed7ab5bb97d5c5d98ee774f7f00951a85399e7545c17870bd3ce","b875df8080625e5ba2b039063488ebfe1f20f4d7159a8789fd0dda243f4b2cb7","8c6336991436b2e0b5843ba837b459328a5bdbe47e12aefbd1853b1182f7d24c","b02987b8805ff97881bf8bd02156f427a4bf028280e5bc4b4f89b2e8d8e3f784","bf77cba02c08849fc4a9dd414e0e15c17e1f6b56a0b9c25793199682cc31bfad","86f8c9575acc759d5eac58ad776858ebdacefb73351960cc2bdae6ffdcc2483e","e73087a4c89fcbfd62483a37ad723e600377233e603592ed8ad92c5db69f30f2","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]

Anchored

2026-09-22

Public log entry

search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…

Expected log hash

bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"de","page":"theme:vaia/returns/de","quote":"Habe drei Tage damit verbracht, meine Karteikarten woanders neu zu erstellen.","rating":1,"review_date":"2026-04-26","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (b9a08f9d6d76…), 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.