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.

“there are free browser-based tools that don't require installation.”

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 2543978942

Proof data

Record hash (SHA-256)

7157cebe1a982d6f3b4c59b996626eaee4707bb56d496afb3a6a67d1829305fd

Signature (Ed25519, base64)

Zx8WG4skE5GdFcreLXKcLRIe1DKZpv4yIChxmuxFIU1lnzagzbLoGu2K/C7S0L9vC6VYKdMZOgeq2Ff6CcpEAQ==

Merkle root

3ea09355a1b22a15fffcd33ac0d37e4039cee2896092e637dd8c4e7dfb5d507a

Merkle path

["7157025b4aa16c98f3acbf6894bc1c3a2e015155a7d8c95f1962e04d3496d1c1","2052ce01ef46f33d3edcac2c920d6ab5a35ea97e60b690457ba11a67045e335d","b3f25def48dd7990295f3aff72bcad1afc1a230925d2850833acd2c2a9ebad99","11d87eee58cb14c6c33beaad6726de4d42e5266c8585bbe6f0c84315545121dc","5b262ffee4d70efb4ab62eed449f0f5b6efdf0250b8c890a8c122f5c1ccfd99f","d4a9ccc51a7c0d07d23a41630016af4998ed6f5b489362ed74f1ded27ab11b3c","be62b0de5e99446f810c0e5cde413c45e81a3938a037a9742b27b5b1714ba59b","aff1f9dec8dbcbe3282db63d83be1c018c00d81740e539d40c297a78f49bda6d","fc00531ea2e7a69ef0ddd4466dafff4f6a31a1e2d3e2729ef37dbded7ad999f6","13e47e7f12f750f670b690bd08d398b66cb6f7c737aa320697827e4ddedaaffb","cfb18ddab612a7d59b52d04ad166265eb2f8873f845be3933be85a5f51614dc6","4b61e0ec42d19f86b24664c45aeb415bcdc17f750f06fa8c661a8baaf980e7d3","0ead555428295332ed003e76021a0f41139c28278eb5ac0da90eb0f864c2f749","d8ed3a5c7d4cd902063782d2b816101a433fa513967f9352f92e3b3b0172862c","331ffac0f34e1f76cacd782a04285f7bacef5f5dffbd1f8163703fce9b22280d"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543978942 · entry 108e9186e8c5677ac836…

Expected log hash

69ff2d97383073bd392d75b79533a80cb25c69be55aee7dcb24b1acf4a379172 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":"v1787289230204","kind":"published-quote","locale":"en","page":"product:acrobat/merge-pdf/en","quote":"there are free browser-based tools that don't require installation.","rating":3,"review_date":"2026-08-07","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (3ea09355a1b2…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.