Certificate of Pick Authentication #359 · 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: Jordan Electrics
Race: Ayr · 6 July 2026 · 16:30
Product: Top Rated Today (Sly Man) · Top Rated — Top Market Movers
Advised odds: 7/1
Confidence: Medium (raw 37)
Prompt version: top_rated_v1_2026-07-08
Predicted at: 2026-07-08T22:13:45.499181+01:00

Cryptographic Seal

Leaf hash: c86086cb02a0897bff253caaa913e2ad186dd8d77b9f02d7a4e8d1bef71360b9
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":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-08T21:13:45Z","product":"top_rated","product_lane":"movers","race":{"course":"Ayr","external_id":"rac_11989835","internal_id":2511,"race_date":"2026-07-06","race_time":"16:30"},"schema":"sr-pick-v1","selection":{"advised_odds":"7/1","confidence_final":"Medium","confidence_raw":"37","horse":"Jordan Electrics","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	c87f5f7e773be68d8154fdfba5904b0a65369b441fc52047f45aec85aa561395
2	right	b0c5c1995072b75c6e11f36fa56a67f42bdddd37c0b30459fe0d39e23c4d31d0
3	left	dfbc172ea144d3e1fee0006e68dabdbfe468a3027c4a51d58012fc843f6d0bfd
4	right	3fcba72da54d2e0c4e2a299d4d179c0d6e529e9699977ed6554f3035b0c3b1d1
5	left	1f43b9fe857f8bff074e76ca1389e5156ba5338ce2270feac8af71847ba29692
6	left	acddd189171186c8bc352e9e4ff896c2fac95bec250bde9a776ff5b7544bdba3
7	right	7b966ba7fb6479ee18f2a8f9b8925b3c3366b9fe81cdbeb08938a02c83890686
8	right	f384b0629d9042022b8062f38497000b02dafa843e81b7fba3c37144f3b49f92
9	right	559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10	left	f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55

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