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.

“Nach dem letzten Update lassen sich Links in E-Mails nicht mehr öffnen.”
Google Play · 1/5 · 2026-08-12

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 2582664613

Proof data

Record hash (SHA-256): 08c1aa5ad72feef03ef60519010e8860d1c25da82dfb4abc369152a000a50c43
Signature (Ed25519, base64): bdUZLSS08J8GmurxMAAVRvCYxyzrbtUtn2S/79pGdHOA5B5UIOUveS662KtFTPrcI4zIP6rxN2euHAQu3pxSAg==
Merkle root: 6eb5f0de999e332d4ff1f5a17c7cbc64ff4572acff20a9a333a7379bc9cd8f77
Merkle path: ["08c5dce46f98f0d6d410d57ddddfa8f94deb55a642254a77c714aaf28c1c310f","d7fba71f592a67b197a05b8a68044827ff14555624aa2a72668e425381af6c56","7f28bf3ddbcdedcea6135a9a7a7b3ca4f75c6fc3544f02b964466d6c43ca6222","dd76ccbeffdcc7e1cea31bf05d6f6e85ddeeb0c440297f01083b2b2dee9b00dd","e8c3649801d679f005b937a88ba5deb4dc1a7875733f5e3208ee9c5a20c42f97","e8e006d128df96230306b7cc3659ceea986410a5c26ef8f20a546557581d606e","3e03b1f70f8bc6e0e802bf5f304fd6b88596f129c0865a5011e445ea04a9f1e3","af2ffd6bb7ba78f333908bd9fff0866ca90bd46da3bbc77c55b850cf6022f8c5","13943bc0a0f3542a257a6fa4ee6c7992d459dba7eeb328027b329e3e0d167e67","fe78235bc88a7d0678d7323c73072a14d74825e0ddf06bfd7859bf641f8202d7","459c90cc02e827d77bfaed57f24d6ba9fa7961034624dc169138e20281eec11d","9337e940b7f8709548c4fe6a97db0e6d1456cbc8d635ace7649844bd1ab52675","84fafb1938dc12085d21bc69181bbfe988045a5a52e2d14f590f330785efc31d","3636da53ddee26549db9323e33a1dcd5168c1910fb5b849a7eaca6270f850dfb","f4ae9615440dda9b622f189073164d60d1c018e361cea2376abc66c14ec3a790"]
Anchored: 2026-08-25
Public log entry: search.sigstore.dev, log index 2582664613 · entry 108e9186e8c5677a71d5…
Expected log hash: 8093bd44cdbad53d6d80012df9deb710fa18f2cfeb1b8cd0e55864446ecfd9f2 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":"v1787630263994","kind":"published-quote","locale":"de","page":"product:proton/proton-mail/de","quote":"Nach dem letzten Update lassen sich Links in E-Mails nicht mehr öffnen.","rating":1,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.android","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 (6eb5f0de999e…), 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.