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 ist großartig, aber die App stürzt ständig ab und hängt.”
Google Play · 4/5 · 2026-09-01

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): 08a4cd677c2f68c3c017160b625d8c3e17d87d5e9010828f6285a6b2d66458e0
Signature (Ed25519, base64): sWf9mYCvBy4quLkAyboB21iGD8r82X6n+R36T3tJG/wea58PvsUtlTxyS1rd9qXCG851b6pspkz078V84PADDg==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["08a4a7d048f850ae5538863219df5dfe95382f14f62a6cde852cce0787316c26","22b933d674093fd0d8cbe5bdacfb157c2b41d1084e375df9c9f09197c366f38e","1e83af25a51a719f0fe4b5d7ce4d8d9bfa07c5659c354506f4fa3d867f9750c0","fbcc81e6a50321d9887a5e2aa91862a23dad14d4acf9bd4ab233c75164188e9d","91313b9c2557990678323f5f51dcaf86c092966c7737f30ea0aa6aa42ebd6ba0","095cfa15cf8fd02092c22076cb6d80d556a1a1b1688b312ae21c8a1e3ef54691","ed3c8a033fa05545ecf983c06dcfda1e41a14ed47ba6da99543c0e397b12dd20","b8f6446f3d3b0eaf2dec7061ca1a391e9c4e1d40e32e163e60b52b773f74dc36","46315284783edced841b19b49e546c0e91ec78bb85b4cdf46e22840273f037ad","a760c30946551ef24c58bb928fdc9e7acc78466a7ea8e26bcb34f1a203e6cb0f","d8750192cd85db07c95ba5834e75c9b36f88322bcc39607da9a71b274b1d77bd","85daadc41544f83be69d5533c0c879f1f8a6b6c7e356bd7472ec3f624cd585ca","38643099e759f6b9db1dc190b469982c0e70d71dc8caac721f2a46ded3b658ea","7a4792c9dcf9466d19ba61ec3efd4f578e21f2d3035e8fa6a6264d3045083f7e","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/durability/de","quote":"Es ist großartig, aber die App stürzt ständig ab und hängt.","rating":4,"review_date":"2026-09-01","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 (b9a08f9d6d76…), 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.