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.

“ChatGPT hat mir zum Glück helfen können”
Google Play · 3/5 · 2025-06-10

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 2514188040

Proof data

Record hash (SHA-256): a5a1c9b9cdc53b277d5f827bf82f3631655c0d37007603fe1223734d725d5e96
Signature (Ed25519, base64): L4K87qfLHmYw9mKkdj5ZuqmWyYlKaolu0UlfBmz45foPYHV/bUYws3FNHBprUs+JrCY1MZzJvOE3LHsmOI98BQ==
Merkle root: 6189a42bfe294c4034f316d047a716a5efecb511b8dbe64c4f7f543872c9bcee
Merkle path: ["a598e250bc5d23d1bb0f351ec8118a4f06589229254eeca9552481aa995ff6ba","264a72d766dd5655e921256a3b12c9be2ca4276ed1d8917e0b57c804fb04a054","137b4a03b40d0bea8a9da644dff4fd64ead34c32a935c4b99a7d62e5296e0976","f66fda8c62baa6fe717f0e6f0b2125cc43bd5d0ec07d6f5a95d66a161b26293f","05ff87dcd8a246ce1bae63d003d06d4c6440787366e7ea3537c3ef400353960c","dc50d301b26afae127f05b6def31bca8c9999736a23f6ce30d27afa7c28aceba","365972ec29f161426b1873bbd4fbe6ec4ec8a23fe5f6e1c4c9b75969d6bf211b","731e0fd15cb43557dd2e6c120672a7270e0d88c46c85fab0cc0f7b619e3038d6","4406713eb92081e1866deecc75d54ee748e294d1fc993eaa998fcc72aca6bf4e","9d26e59089044b358c3d8aa4f628e22b14d1e710f0cde1788d85e97cde1b8058","a98128cf83a29153be78c41e5a50ed8f7b3f30cb403ebca31ea89df498fc6832","a8bb489cdf9d9d7956d12a31aa1e10822c817e003f976d2a0a7fee3540509c1f","8b1224b2d8406510f0bc8243984d0efc746bc1407d5fb93d79122fcf91f7bc98","67223d7a85c1115e9dde948af20504ca3bc62c9ea97637792b53682f25f6d8d4","e36acd56aebd26af88e4e41e8d5bc2a1389f049dd914bc2c3da8d68ac2fede4b"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514188040 · entry 108e9186e8c5677ac9bd…
Expected log hash: b0fc1d11450dfeabf778635bd8a8264987fbb7e682331541ce1f5d7507d4e862 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":"v1787125125654","kind":"published-quote","locale":"de","page":"subtheme:storytel/service/nur-chatbot/de","quote":"ChatGPT hat mir zum Glück helfen können","rating":3,"review_date":"2025-06-10","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=grit.storytel.app","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (6189a42bfe29…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.