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.

“wichtiges Wissen länger behalten”
Google Play · 5/5 · 2025-08-30

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): e7ac0215cf4f78c494a47151705dfb1f0e4d19702617ed8e9ce32dca60b3532b
Signature (Ed25519, base64): vqp7H+TLqMNrjQA0lDkzzXjMlNnyDthTvEurQAK7gLXxOLXThyoikvUT+TKqfVi/JWw3Yhs9bbiWAL/6dQxNCg==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["e7a7ae6e6a0be7ba5f276c3be336ed68f2b90e6b046ac6f27f7c0654acd38033","a61450a772aa2419cc9b990906570f7afe827e3da366fc5f91fe7bfaed63b6d8","7edc769fdadc14edd3de66c7d0879140ec9dfff2cb5cc72c8db32d04350ee2d6","43dd453bf9c02139a2c25f4041c3bf84a3ca81988802bd4333e8c5fc5d2b1a9f","c89864210b65a60de9725165abfd4c2cc52537a2c2b621ff354ea2bb3aef8600","023e423f2ab9d432b95b5e260bda7f280bb6d6435a9c3eaa565ab3e233f4a0aa","004f18ae940cbd06507b8fec3d9ae3d920a08f92e8d726cf2465703337eff3ab","c3f0fd7e21bf86aaac42a72ce2fae263e8ea62af1bd2baf939f97387246f8022","631bcb4f089608ae873cc828a634358b8eb7bfbea66b5d560e711fb4962378b0","85cf02830a8d5647a5f7705ff7da2f830a119ee29dc89474d5bd79676cc972df","61847aed1e15fe38603f3749ed4f967e83902fabcda16f828dbfb3db9a44d565","d28ed21d4373cfe7811429a5d4926ac987665261fca2846c93ddc2c90e391266","f95e3a68f572f5650a4093453e2bf28168547fa91a01ce08e539b3d7016a3f80","53a8a23597d45564e495678bf6125e41ef42f347693c924494330dab53ea1e2d","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]
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/durability/de","quote":"wichtiges Wissen länger behalten","rating":5,"review_date":"2025-08-30","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 (e299bf38720a…), 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.