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.

“The app cannot be installed on the iPad Pro.”
Google Play · 2/5 · 2026-08-05

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 2579616312

Proof data

Record hash (SHA-256): 0cd27e5f2f6b05082ff8a7eba9efb5fe438e23cfb46f92c49a984132f1285684
Signature (Ed25519, base64): 1+BJ5tWzzDcv8U4iEfVa6dlXcg/Lcco0B+M5rKCBuI4RGwHZuiDRRpQdJi5f8Z9cfcIjZq2trF9vBwE13K9vCQ==
Merkle root: 8d929b933d3da853a342174568dafd4f2990c556a59a904f6c4eac8eca263c18
Merkle path: ["0cd27f59d64c1c50233015cb0b21eec36e25410013c477959546cab2323fd860","4e22d17deb66b7d4e50e0439f42a07a377162772622621e8e2d1b91d840da370","1f798705dc628bd8812a8730094948e1df69871c0611cd1aa4b2691051f36319","5dd3af399e2ec969aa6c7dba39ebe8e0bc24a92ea777b528d58cccb47c81988a","92ba15d951118e8f76f254aa4488f912c9793a41e1315c65f0f5327ed4065e14","849bca34af4acbafa4b2678f587b05670ebc16f52edb341bd091c04c5ba4c327","1be1ef038922022d061b2b79b135ae200a13d1f30dd88f79cf442166378305a0","b340a82b2a0a6a404f097e83f5971b85d8347eeb0742f8ac4ff47b209eacf8bc","f6da43719d565fc5919a797324d1d8dfef4db561f8f4201cfb40e4edbb080f97","a214b6aed1be4876c2e4ee38ad9b654be32ebc1615c01f6662ba447c4d67d66c","ae7abb3375ae4dd1e271bb3f6197dac5f377045f7fd4e0809ba0e99e567fe40c","4273814e139b537ff52878f215555e1437b0cf0a363d27847ea79db5ccf13f6f","db36e5683a162968d642d2b33f1127be2dcf059690ad38add1e5db8d7a7a41ac","9576369f408a7fb58ca2e97774369b4e7458346c8937c3d02549b43f61f201e1","67cc9c31bb9e37342ca834f1c2afacca9d4e9ea3aa24cfabf98f677678d81a55"]
Anchored: 2026-08-24
Public log entry: search.sigstore.dev, log index 2579616312 · entry 108e9186e8c5677a98b8…
Expected log hash: 169fea3926d76eeb6fbcc1ed6cb8bcc55e598869705eefd29172a719878e4a1c 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":"v1787542624469","kind":"published-quote","locale":"en","page":"subtheme:proton/ordering/setup-configuration/en","quote":"The app cannot be installed on the iPad Pro.","rating":2,"review_date":"2026-08-05","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 (8d929b933d3d…), 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.