Certificate of Pick Authentication #596 · Saturday Racing

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: More Thunder
Race: Ascot · 11 July 2026 · 14:27
Product: Top Rated Today (Sly Man) · Top Rated — Top OR Ratings
Advised odds: 11/10
Confidence: High (raw 121)
Prompt version: top_rated_v1_2026-07-08
Predicted at: 2026-07-11T08:00:22.724435+01:00

Cryptographic Seal

Leaf hash: 960661465594f334be2744a89acad018370a9876158abd8526c3550705df5750
Your browser: …
Batch: 13 July 2026 · 709 leafleaves · inspect batch →
Merkle root: eba1d4cb07b18df5f26ea6211dae664c2a8d9ce7bdcd95a3a7d9da03ed6cf62b
Your browser walk: …
On-chain: Off-chain verified. Anchoring on-chain is a separate, gas-gated step.

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":"top_rated_v1_2026-07-08"},"committed_at":"2026-07-13T21:10:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-11T07:00:22Z","product":"top_rated","product_lane":"ratings_or","race":{"course":"Ascot","external_id":"rac_11991005","internal_id":2701,"race_date":"2026-07-11","race_time":"14:27"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/10","confidence_final":"High","confidence_raw":"121","horse":"More Thunder","position_claim":"win"}}

The Merkle proof

Each hop is a sibling hash. Your browser walks these from the leaf up to the root, hashing pairs at each step.

#	Position	Sibling hash
1	right	96e9dc47adf0a75710d591984c0c458e5b267b91ae71f9e1e2bd483e873efc16
2	left	0e38ec19eee07ca291c7623a302db075230373896e617b1bd99bdf7384f25c60
3	right	675f621fc784fde075d9bad1f3d94d4f8880e5e47cba872ac2cdb8828dbf5d47
4	left	c6abddf7d25c58282b7aa9c8fa00e70cc1043d87f4595a4e82253fc13953ffbb
5	left	ff396369426df07e2cc9d7219a4648a240b65996a5f7ad862260181ed3b5063a
6	left	de4c18b344759b795e65fd7d556764fb84fe70fe3ed694d8fbe24938047d102e
7	right	4c56aa4f1d1039c6ad4821c5c72376f7d1ccb9ab4f942fb7d343352d40712b8c
8	left	9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9	left	c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10	right	e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294

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