Saturday Racing · The Transparency Ledger

Certificate of Pick Authentication

Issued under schema SR-PICK-V1

Verifying in your browser…
Hashing the pick's canonical bytes with your device's SHA-256.

This is to certify that the pick recorded below was cryptographically committed to Saturday Racing's transparency ledger before the race ran. The commitment is a SHA-256 leaf hash of the canonical bytes; any subsequent tampering breaks the hash and this certificate turns red. The check runs on the reader's own device — no trust required from us.

The Pick

Horse
Beaujon
Race
Southwell (AW) · 29 October 2026 · 17:00
Product
Lay of the Day (Sly Man)
Advised odds
2.10
Confidence
medium
Prompt version
lod_scorer_v1
Predicted at
2026-10-29T09:35:06.268395+00:00

Cryptographic Seal

Leaf hash
faa44ad636abe999fbb199e8f8be781f6ff7b6ccd7b8933481d07b75778cfd19
Your browser
…
Batch
Not yet batched. The end-of-day Merkle tree hasn't assembled yet — the leaf hash above is nonetheless independently verifiable now.

Signed

Saturday Racing Editorial Ledger

Committed 29 October 2026 at 09:35:06 GMT

Certificate reference

#26040

Technical appendix — canonical bytes & Merkle proof

The canonical bytes

This is the exact JSON that was hashed. Copy it, run sha256sum on it yourself, and you should get the leaf hash above.

{"attribution":{"pick_source":"lod_scorer","prompt_version":"lod_scorer_v1"},"committed_at":"2026-10-29T09:35:06Z","issuer":"saturday-racing.com","predicted_at":"2026-10-29T09:35:06Z","product":"lod","product_lane":"","race":{"course":"Southwell (AW)","external_id":"rac_32302713092","internal_id":7047,"race_date":"2026-10-29","race_time":"17:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"2.10","confidence_final":"medium","confidence_raw":"","horse":"Beaujon","position_claim":"lay"}}

Server-reported status: not_yet_batched · Ledger overview at /verify/