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.

“Support schon 3 mal angeschrieben die melden sich zurück aber passieren tut nichts.”

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)

7ffd0a4474a156d360729906fd4c5e00e2eafbfa77a69b7d7418f3e429048118

Signature (Ed25519, base64)

EBGxbWDbCeOY1aCyp7HIqXZhwBEpwJ4goGfFPhUIebo3vxLOBwtYTsAPZgz4vXjsjWB8pXfCK6bEbStmDkqABg==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["7ff32558f43caa9d92663a902a726cbaa7a274c74b51a04b565c47b799607633","f78a5f6461707bee869e9acc7dbb119b444195b13194499265f7b98df06b84d2","d1d9f2308251e32b954514b18c906f5f0e6295960b7000e35b29cc70a6284b26","3e48186da1799a3f495c2ee2b0e7d63813ee847197920907abaeb42794e0cc3e","866057b018b1bbeb67f66121cc538622d82e49cb56036be0de429f457cc8e8d2","14de48bbc1086e0c405a263cfa8d20108542d7d65ad6461d6049cfabf4dab69f","c5cd1ddec837c7d6193a408d036781f3436eb5af81e400eb78d7b914007eb758","384c9a607f143db4cc82dceff34dc38f3d181aa1f8dc40227b701f34202569ca","5b57a877b8ecef07a1f2e19efd70e95aebd9fbb4e88df5fec88e711f8559250b","3d766c6fa36af0771db4852cb1869434df58023b16dcf5f4872e0c4b38b00677","b12c24ca7cc480dac10d3c9e7ddd80a781d96f3b29af3e073b54d3ea0a23098b","d89f5af62fa7d0c6d0a9fe42e9680d2e7af53ca738a716457a3405d68b60cdb4","8b252735b283ab7584d9f6925f08ed38c911c64db001463eafabe5061cb6f9fe","6c299608515c69a03540be35865f96ca4932f3e0403f8f39fb0e1c2e2aedffb4","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]

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/service/de","quote":"Support schon 3 mal angeschrieben die melden sich zurück aber passieren tut nichts.","rating":1,"review_date":"2026-06-18","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.