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 das Probeabo gekündigt und mir wurden trotzdem die vollen 77 Pfund berechnet”
Google Play · 1/5 · 2026-02-12

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 3140627354

Proof data

Record hash (SHA-256): d8b1eb15004a8141a16ac903086283acb6afe1a985c43437d2a7877d998728bd
Signature (Ed25519, base64): mNBDOdl5REO1xxFJ3vk+M6HrVQPmRrGwFrw12guKJPrhWt4t8cSQLr2z624P4HEliA9LdJtPp7ogQk6fwpp9Dg==
Merkle root: 7e5597bd3c162c8b6d828ec7450367f642ce11ee386de414b88376dcbb621ae5
Merkle path: ["d8b28d2b7d8a2cec65b9c9f4f46381e6e0cbbb6b6f566675f17e85fda0e6078e","199621b77b398af0ab8fd61e4905012540062c88637adf8884df485de52849ba","b6e23996f95410066c8daa9cb8b760a4e79628accccf63b8d945ae0102fcc055","dfc7eae6e15e97aaa9fc6933333f4f58a284ba63cda760114c5610b4afaa9a00","e276349ad45d7fad30efde77a972ce2c3f33b6a36961663c801ffc7021b33b5b","2eb66033d3e1f71bf269b868fdb68374e221d3365d40eb915eb2c099696e2f7b","81d76991e44c3a0ed82a186d26787b35f7a84cc3e327987bb1c6d367ebebafb1","51379b8c2d0be77d5db0aa436f04b1c914242352360bc588b8d372001d66c382","d37181aa930fa7b7d9525896770054d81ca2a3544ad07ce9dadd6976dd89251e","3ab359ff95d7a09cd097647e02244aa08fb19ee0388e39d39cf43c7cb8104b67","304fbb38e8aa0d3bcb468f4d2f61045923ed612383b7a9df5fd6562e6735c7c1","5a0d03f386cf2ce1b7e8699bdc38f59c9df83b99caad98658ca82702b7eff85d","3fa77f30bb4ae3659981dff326c7b1ead82f840aa815dc4f4cfaa848f2034350"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3140627354 · entry 108e9186e8c5677acc98…
Expected log hash: 82c9bd063e624267c60865e2416c3d714724e2c3b18c4773424cdf17232dd6f1 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":"v1791432333296","kind":"published-quote","locale":"de","page":"theme:vaia/billing/de","quote":"Habe das Probeabo gekündigt und mir wurden trotzdem die vollen 77 Pfund berechnet","rating":1,"review_date":"2026-02-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (7e5597bd3c16…), 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.