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.

“I am thinking of purchasing a subscription from you soon”
Google Play · 5/5 · 2026-08-06

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 2621349433

Proof data

Record hash (SHA-256): 0e3644e765f64d8f6a5fd6de79969db9b50aee72b540e97bab57d01970ae9066
Signature (Ed25519, base64): 1XKSB0KnadK8IFfwexgvn3xq3smH6gQkP/8SVWRl0pYjmOdP/lv5K53E0kQBoGZTb2RS7kj23hslN46oT4rSAA==
Merkle root: 52b348c94f3fdce59db013e2d8b151833bfb9c02163bc60ea07ad4321b96c806
Merkle path: ["0e37e6506233a9e2f3a05663c874e550b514cf213af92dcf50e290f681b16513","59d204476be87b7f4086caf6515c286c90a17fd1c3a93d180588f35c2ff286d0","5ee530500f4a48156fe9dc3691ff056a5f314836f0b914898eee6a438d64bed5","41166e16e62a5b824aee145078f6d2f5a71b9ca51ba34759e3291b7c7428d628","53ee0ec65010edd5781c071a4b8c090082c92c5d54fa9ac44eafddb9cc472576","46367326967ab8a8ecf20fd1d8b04f18b55a87f0363fed4b2444994738b0c77c","e82caf6d2e1baa0bec25f3355ac84a10969f2b8acdeaa906f9f4b4da81e5600f","4c6df2a2429747e7e83908d0727c8e89da1a0547237cc1fab9cd55a545515f46","900a882089467547ba93c4b64893ab212eb26fcd09035ab7dabd80ac10e72854","835a64f4ed5f0898827210f980dbff24533ea14e52b95d2f78a679d7fe15d6f7","6a62e9a1e2d27a02cf631b97d4856c5f025dd08f877bbeeaeef2359949b03342","669ab90fb715919711df59e8281fed40b96b704020c2f40755c68d0b3c101ec2","737cac4ca199ff9d501e9278c7c4cae2cea135754fbc58a1df4019ac06ac48eb","775de910b40798d9f37b75d39be79e50770b797482dba1aef04bba70619fff3f","50b301601f25f58ca39a522d1fc14c87ef92ff2847a542557119e06fa2bbb889"]
Anchored: 2026-08-28
Public log entry: search.sigstore.dev, log index 2621349433 · entry 108e9186e8c5677a91b8…
Expected log hash: c0c478568c16caefc62b4dd151387aace853e1d48501c09aaebf0c1fbe3c7cab 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":"v1787884935070","kind":"published-quote","locale":"en","page":"subtheme:proton/ordering/free-plan-upgrades/en","quote":"I am thinking of purchasing a subscription from you soon","rating":5,"review_date":"2026-08-06","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 (52b348c94f3f…), 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.