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.

“Without input, it's impossible to continue.”

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)

d415412c20eac54a8e987c266b5160eccb209eb1795ce07030052f34334b1085

Signature (Ed25519, base64)

Dk4Rv1MznnrLMLZz7O+qzs0OKxnx4wBIt8G01phqNisD23IwKFqDdk+WIEV4vIdaYtDjnYSl5EjisUzsQdg3AA==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["d414bba95cbf165671c06f8757fa0e061574501c48d275761ebe69215676db97","fa756f6657f6ddc2eb2c545f9c2e1e908f7fe025f86836f45377c3d4679a7b85","8847a05f83e3ad530739ebd5ea5e6b18cfa8cdda5683b2b87e562918df727759","241a15baba207c67478734ce523e843190ff7a4b047b2055ca2d26b6b658c0ca","f60724fe1582d9a5cbf4c9330c81ca23491c3e5664c6136ab32ccd1868d07df0","47de6e425bd7b625cbfb4bedacb0c9dc6b665ee1106e9f9952f163b8685b5bbd","3505dda8526d74c8f2b2edc2c741f243e970cb9564b6c1e9b169c65afd2a937c","3a4206f320c56cd82db74e683bbfa9e002178fa27544d1565dffb29e5f9abeb6","c27b14fdeb1bf79b5562d069eba04698422783d0cc9a6a8344db89736a205dc0","1ef2d32327dec49b078f60d82e96fe63ff04f9e28e1f6ac4531459cb8e763e04","5fa4d2509ac4b266680172a1d644b9603830e2992eb99b956b8d4389a86690d7","1324e7f8581b1cc3455b81e88efce3958a5b23eb7205ddfacaf930e32b10bd47","ff0ce3b59f4b6fff6b806e01d20d764fb2b7a5651693c19ab4bf8a8b5ce5f968","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/ordering/en","quote":"Without input, it's impossible to continue.","rating":1,"review_date":"2026-06-16","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (b9a08f9d6d76…), 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.