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.

“Es gibt keine Option, sie so zu belassen, wie sie sind.”

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)

fcefee1901111d6be4242eb738894054be2f1c87ef89221d26a4df3622b2cd1c

Signature (Ed25519, base64)

tjnhHrafS9JkbJsI7wLLtO7NlsGOsw+zmd3O8/xcxyCX6/6ctqNoBqZgNTf9L4jFKoOScRNaEAPam3Jt+IQhBg==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["fcf0166de6feaa0fb182eb618ef900cc5cbd47b1fdca4d73d8b522e9dc295949","f35f6d26c2b594b2f39ff79fa434284f0d04b87f63d237d8067e5be0d7975954","6fbccffb6c78bff601bbfb8e1ab683a54e266d45e7dd4430f5dc3b453fdb8471","bd30e409597bf194eecdbb4f47d28d3ed741dce170719b50930b36265ae939e2","e2f5fbcf406676a49ffa14177be4f75094ade35ecb29475006ab7a60f571726e","a6737105e8b8ea6940b045cc320fdae1a24d23109640bef1f8e33b6abfd10331","3f90b4fe9e45e87220766f0dabe72a4773835eaf3ac747192baef04bf6723dbc","2dcfbca550f56148f3cb8f3e6ec5d237dd3fa62d55d36f37fadd62b0255885bd","fcf57de0a9a49cca33dd83063b1458d8fb8b87f660f97be895aac16e06246343","e34df4682f1b51d069b490f515c441bcce6394d17d5ce5081e762d6a54690971","58fcebd1d3d07f3a6ba5f31279f2ecf014cdac37bfe65872be1ec5d6a456940d","e89b125d6d75a826a464fa50668f6e82a6668dbc929bfd3fce7c23cc14adfdbc","c975f4076f62a76765a4bc502e988829db65110a1650004b828d2dfb5f90a9da","f92a7fda99af63eb008476cac47b147880eec6868f847624f8b438c917195408","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/fit/de","quote":"Es gibt keine Option, sie so zu belassen, wie sie sind.","rating":2,"review_date":"2025-10-06","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.