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.

“writing notes and changing font size must become easier”
Google Play · 4/5 · 2026-08-08

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 3198797320

Proof data

Record hash (SHA-256): 1ad29be746e213479bd78d9727427cc4445c2bfd0acf754852817a6a21ace4ea
Signature (Ed25519, base64): AuE5YbKN1hTV0mntLZVNV+UOdeWb+251jqdzN90om9P+ZX6K+RLUmwe+2aG5nU17rcAkkYEhvxBBnC8fNQFNAg==
Merkle root: 199738dc68b66dcf66f6b0cc77e2cba74c3bfda88989684620837b4c4e64818e
Merkle path: ["1ad04c11db8e79b7f7e65b2c4c3805c9c234adf1abde61d9c43bbfcb6d0f9b3c","a64e2c083eec566c4912f7ccd0e45735477abbd0531ff8fcf4982afa170d4257","75821db0178b40062a137f4e933dca601426e02a516cb7956302699dde154924","12281a7131db39c8e08161d4e3853285cc23fffd9f63eb8a8963d1fe2704d593","877ac3442f80d96a6c937cbaba3ea8701039b1a0f3b9e562f3a376e28b9bad39","84f45d90e56624079a144d69bbd851664a2c09429143d67067126c92d4c5b065","da8782708956bbd5366173889d7bcae406deaa67abed257580c57761605dd302","6a129daaa917cd2c7df6324e560de374d86680459bef2695f756bc2e5aea10ef","d3305bc9b5491628edd74020a8e9f35854b8ab0156cf5f7427b900bd18fde0a7","1b71f6f217fe1129478608107159e8d15bf6eedef4573ff44358ddee524e2b8d","237d92539dadc5c229398abd4613f475072d6788bd28bacee8b5bc01f400fb10","86433dc4e5776691731438e65de2d710dae3d65c747d632e0e4f67a92455b646","89c2d1ad10f8da8a1ced326bfbd1f55882866fd705571bc337258b3314dad42f","ddc8a66e59fc8f0934334cf08e419f621290129e658cbc58d8ec27bafd90b0af"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3198797320 · entry 108e9186e8c5677a14ba…
Expected log hash: 46227e67415cdf5b62c43420eb8b7a80b35acaa912410c2711787f678b77c9c9 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":"v1791687727006","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"writing notes and changing font size must become easier","rating":4,"review_date":"2026-08-08","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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 (199738dc68b6…), 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.