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.

“Ausgezeichneter, sicherer E-Mail-Dienst.”
Google Play · 5/5 · 2026-08-04

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): 10b1c0ff20f43aff7f3d294c1f8aae3030ebdf0b945e3b35e8a7c810696e425d
Signature (Ed25519, base64): Pln+dIX8XYYz8NaUfsyVU0woGBNyqPSJ3vzMkl6su5N2N03DX+I7nv0xKscSLekxXo+zGgfX9g+5fCQ1eov6Ag==
Merkle root: 8d929b933d3da853a342174568dafd4f2990c556a59a904f6c4eac8eca263c18
Merkle path: ["10b1dc9534b46d3859285599fdb5159d37d0b29beba7c80e84e424e8d47c24da","4fe750bf8157cc3a1b82ea9bb9829116fc3e3112c8690287d39dd69df358165a","4b348525b91fa42fd0437a2fb4b88b874824c4ce5ecefc3c36316af65f75b959","0901661a135e75c09828bb59c305f1a198e70db5969ab96fee53ccb302fe64b1","a24316160e09aa97c743d9e1580cd0d9a31c08c8d35ce3a91a1b25f7d53a818c","36c912bc622d6dedb10530ec569093203e04bf99707ece7a7a1dace61a078137","afefbd4aa4701671d546aa7251fe6c78cf1c671a6b8fd29538fbd9ee38c707a3","7ce3a0fcd82eedcba235f10bcfab99921f8f80b0378f55cc1e57f16f648c5737","d26e1822c955a887aba1c974e6cda72272ae02447ee48fadfdf9074ac9e1eafc","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":"de","page":"theme:proton/communication/de","quote":"Ausgezeichneter, sicherer E-Mail-Dienst.","rating":5,"review_date":"2026-08-04","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.