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.

“be careful to save frequently as it always crashes”

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 2514188040

Proof data

Record hash (SHA-256)

f9b5aa12a005faa6e91443bdda622c458e389f1d9c4a6cc46b81514c642d8586

Signature (Ed25519, base64)

x1jCmyWIcm11bKsDqwc5G2ohF4EgBBiumQkYI5gLV06oTthG4YrPKKOgR3uDZXzmA19hX3omK5Ne6GN+1PcpCA==

Merkle root

6189a42bfe294c4034f316d047a716a5efecb511b8dbe64c4f7f543872c9bcee

Merkle path

["f9b16eaf475a9d14877347df573c140b37dfea6bf524667f8c647d4f544c7307","b4775335cf5a24b0aeac8205d588d32ba1d863d8a4e35b696dbf00f2b55c7eea","54f5b42f42262ebd48f71b04fee516de71b1fded5647a787fb470095d6dcd86b","574f847b56ee988c450627262e5320c9ba3a8ba721c6e51c82d441b4b28b6dce","ec127b7f6973de5e7aa653781edcb51f2be72431625c1ad7631fa5e4273d631a","2c16548b4ce899c3404f3c27837a2eb0c497c376bc3f3227c77f97712b8f6cad","3abd4d2c375b6bdbee6ffe50f5dcb169970aeb9ecd5f395bb9547894d097aa10","68148b6767826d70e34336f312f421fa37b9642eae537341ae8e530cd2b13cb3","fa1ee6a2eb05c0936813be643dd8dd3fa5b13d2f56f54ef1dff848ce74762928","0733a8a52ccd7a79e33c636b09d12667aacc5da72036aa278257e56c42eb8f18","63e18a1dfc6342c2a7756ffbe4216173ba26047fa8def506c22f0a4737814d71","7c8bf2637c8e51ca7d9a4e311bb21d85aeff66e79798c7ff9f6beea73b6a66c9","6c4d8c79937f7e6f07e56ecf18f28829ac4cba63f1b51002d7ec38d8889ccf7c"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514188040 · entry 108e9186e8c5677ac9bd…

Expected log hash

b0fc1d11450dfeabf778635bd8a8264987fbb7e682331541ce1f5d7507d4e862 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":"v1787125125654","kind":"published-quote","locale":"en","page":"brand:drawboard","quote":"be careful to save frequently as it always crashes","rating":1,"review_date":"2026-08-03","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.drawboard.pdf","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 (6189a42bfe29…), 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.