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
Room For One More
Race
Ballinrobe · 10 August 2026 · 19:57
Product
Horses to Watch (Sly Man)
Advised odds
13/2
Confidence
High (raw 21)
Prompt version
htw_v2_2026-07-06
Predicted at
2026-08-10T09:55:09.849095+01:00

Cryptographic Seal

Leaf hash
8a3822b681f1acb819b498627f0741792545766ea43b1ddcc55ae56cd3723db7
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 10 August 2026 at 09:55:09 BST

Certificate reference

#11802

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":"story_score","prompt_version":"htw_v2_2026-07-06"},"committed_at":"2026-08-10T08:55:09Z","issuer":"saturday-racing.com","predicted_at":"2026-08-10T08:55:09Z","product":"horses_to_watch","product_lane":"","race":{"course":"Ballinrobe","external_id":"rac_32294010151","internal_id":3910,"race_date":"2026-08-10","race_time":"19:57"},"schema":"sr-pick-v1","selection":{"advised_odds":"13/2","confidence_final":"High","confidence_raw":"21","horse":"Room For One More","position_claim":"win"}}

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