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.

“They tried to charge me for the annual payment”
Google Play · 2/5 · 2026-04-24

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): 9df9cbdc525a66db0a3907057c1dbee6b81eecb8776b6699e0d0371e95ad6e97
Signature (Ed25519, base64): T8L4oztuz/wFCE+Hz9q0wsH9dachHB+5+catWyDypBA3U5Yk4emtAUQI3Gf5kjlcFxWSQXfCG0BidAcD2hwIBQ==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["9df914570c47a24c4a6b3e157deb77d4dd1de06a33e5b082c6ae83bb2ae6629b","3b379a610b8c6d35b105a17631cb8de847d56dfe6612772854cd06f33772f80b","ed70970dac4516fe67fde142f1d45094f54947e225db3deb5adab57cd25af557","9221f2cb41c08c71e68795cc1fe15b026ebc3398bdeb6240311e05dc5dfcaa08","902b8b14c0fb25f7fbbbe942b1b6c9577f7baa32ffecfb15c742c71267e37084","f34f5958b6bf4b934c0b661ac5e653d06bd303faf76768d3feac61ef61882d23","26521103d628626244e83be0aec9b1ce432440e7d2a48a15ef193c803371f85c","152e5ffc7c8aa72fc8874a458996244123edfcbb78b46bea1d94b3ce7c582316","1e2a6efad6d726750d54175ad4678925e192546ee95e9afdeebde870c02581f6","b66e52450462bdf556c8a902f7682218d3ca60c4db7b5b22218f469c0d7c5a1c","2ffc2611ccd8983110ef2e74a086c318f6a1426a73ab5eff0c34d768ba78b3c1","86f8c9575acc759d5eac58ad776858ebdacefb73351960cc2bdae6ffdcc2483e","e73087a4c89fcbfd62483a37ad723e600377233e603592ed8ad92c5db69f30f2","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
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":"en","page":"theme:vaia/billing/en","quote":"They tried to charge me for the annual payment","rating":2,"review_date":"2026-04-24","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.