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
Reece's Call
Race
Ffos Las · 21 September 2026 · 14:38
Product
Pick Winner (Mr Fox) · Pick Winner — Shortlist #3
Advised odds
22/1
Confidence
Medium
Prompt version
Predicted at
2026-09-21T09:18:05.999167+01:00

Cryptographic Seal

Leaf hash
43f5e64897361922fd3f997da0a2c6d09364a2c989293aa3ce9f4a39ba182392
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 21 September 2026 at 09:18:06 BST

Certificate reference

#18938

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":"fallback_api_error","prompt_version":""},"committed_at":"2026-09-21T08:18:06Z","issuer":"saturday-racing.com","predicted_at":"2026-09-21T08:18:05Z","product":"pick_winner","product_lane":"pw_3","race":{"course":"Ffos Las","external_id":"rac_32298230874","internal_id":5470,"race_date":"2026-09-21","race_time":"14:38"},"schema":"sr-pick-v1","selection":{"advised_odds":"22/1","confidence_final":"Medium","confidence_raw":"","horse":"Reece's Call","position_claim":"win"}}

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