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 just wanted to compress 1 pdf and app asked me to sign up”

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 3240367269

Proof data

Record hash (SHA-256)

03ee5e22731aac060164214ad6852487ff751226d82aeedcbd48f42b7feca113

Signature (Ed25519, base64)

rFH6qOOeNZrkPWpxfowxmy2rRHA1T6aZCzlxiST9ogloTLWkj8Aiaq7fp2yNkIIKlmgRo0SvO/Nz6i494FPBAw==

Merkle root

1da6cf8d96c8876e66e82e9bea7529c76d7e25eda1c07550505caa1baa49c4d1

Merkle path

["03ec9642fc643aa4e5243b7122a0716fce38da6f1aa3537c37830641886b63cf","be52671782e3638ec17aca1ef3e1e37073b2d4bf688ca7cec125ec4918e82f56","32ca0ca2cc5ecad87d92b6a23b3a1db97981eccc5f50d2de5cc65e4795339e74","6a3f3015bbabc200fffaf565a031925134e6aecd5df5fc5455c67d31ae2c10b6","f88535a4b023468b3adc4f26ad4fe9d5b0f12b05c1d12224cab94934902b733b","25a17ca99505977df8b9b3d48158154a8a72d3aa6d773ac74484138162d572fb","bb7f18a90fed50724116e2db61d247f333158d366ffa0dfe6e364155480efff7","3462cd48dc3b060c84636f35709f6201df484b42e08991abba8c47c707ea2f17","4dab19d82f8e5da524a9ffb76b931e55eed7aebbbc363c55a30e5e442a7e2001","2d40eaae35e424d9888d333d8326b3c6871041f9e300aba4e6483748a8e942ef","f0e4743308c97cdfb9d7e257322f5fcd8ac75eb83cc4eb10155c0a0d14a396ab","ae52329abaf68e9da165e516499bae5b8b1835a4e008f4e52a7a7b160cafc13f","d0886e619546ab8e630cf9041b21d39a146861d5b7598b5044808c3537212a80","2d81003ff1cd2149e42eace973cb0f4cdd39b653f7b06a20804a1f1025023ebf"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240367269 · entry 108e9186e8c5677acf8a…

Expected log hash

f6397ecd2b8639a3c60345d0c567eb602411c7eb1bead248c760bae850816087 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":"v1791861381931","kind":"published-quote","locale":"de","page":"brand:smallpdf","quote":"I just wanted to compress 1 pdf and app asked me to sign up","rating":1,"review_date":"2025-01-22","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","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 (1da6cf8d96c8…), 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.