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.

“das app ist sinnlos”

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 2904877428

Proof data

Record hash (SHA-256)

0f6834b8f0554d766d05ff64bab79bfd52969abb82ba0f728271e2cc08249311

Signature (Ed25519, base64)

NqLlSSJPwScKPxoTsdfewTxVJP/8oliycLpRDwrv2jQaQySYJ1ZCrrGf2vUOS+s2rgtIkOj93OW65DUlp6ZFCA==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["0f6747821dd46a0b42090fcc813b04f00ed35eaff9fb4e041b630daefd391b49","f5554f07c553cb1bd4cd2dc7035b7ccab65df7917c9ce5e26b053bd39d0dac49","9a72e081caaed9b26e145c71968001da59ec50bb0d6fcb067acdee42552c6231","0a8e1ff063e462e47039ffa16353ad2f722063f69cd26309d3ac6c504d93c89e","f86fe99cad392b488d7633f5d446cc6e58d3442779e00a35e93c012909fe8946","a6e3a1af6675af9b495bbd4c200dac001e812177de7fa759c33b1303949cde75","0e2836158ebab828d805432f5cb1a49144da2af05c1ba002cfca1ec6376ccf3c","a185063894749bbcfab1f4ea02190912df6dc0e4fc50063333ff6cdc5206ee31","fadc8ecbcca9d265d29893de96e4f9ef132a143eacc434d654993e913e028f2b","970a8d109d15b737e86057b25e203eff253a7ba6d5e531df405fff371670fd43","58142bf66ba65e446a4eb77354326cf1af877c55e20f1aedfbaccb1c4e417735","3dd98b4827466239194cf13892ce77064445b91bf8511f1229b78137ba6f3ee2","e3c57a8cebd6c96ff44fe2cffa20a59e203e20975780cfe446c93ca7bbe448ac","2e838893ef313b8ef0f87568e1e691fc197dfcee84413640a12968493decac73","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]

Anchored

2026-09-21

Public log entry

search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…

Expected log hash

d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"de","page":"theme:vaia/quality/de","quote":"das app ist sinnlos","rating":1,"review_date":"2026-08-31","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 (e299bf38720a…), 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.