VERIFIED · SR-PICK-V1 · SATURDAY RACING · VERIFIED · SR-PICK-V1 ·
SR
AUTHENTICATED
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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 Madam Secretary
Race Newmarket · 9 July 2026 · 16:10
Product Horses to Watch (Sly Man)
Advised odds 11/2
Confidence High (raw 20)
Prompt version htw_v2_2026-07-06
Predicted at 2026-07-09T08:02:48.695319+01:00
Cryptographic Seal
Leaf hash
4e5b412fe4853220ad0670f8a98f1d489759de39d4f6aac8286f1e57b9b43d97
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":"htw_v2_2026-07-06"},"committed_at":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-09T07:02:48Z","product":"horses_to_watch","product_lane":"","race":{"course":"Newmarket","external_id":"rac_11990771","internal_id":2640,"race_date":"2026-07-09","race_time":"16:10"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/2","confidence_final":"High","confidence_raw":"20","horse":"Madam Secretary","position_claim":"win"}}
Copy JSON
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
left
4ce3ba0f4159729748e56fc180c46f79b21ec0b78a07c1e68549d13c831039e1
2
left
fe82ec6c2921bae06a7b8ba1cb1e8702092d888f92081b439edc9394e886928f
3
left
22ea664ecc6f531cdb7610415f3d38fa552fe0c34bd750a1af15c6b477627626
4
right
0b45a6945f3054295ae99c8158f3a2bb6714e0690539a9dd88e1cfcee1d2b144
5
left
6703c0ac8c6ed7fae634608872e9d816e7c3dbf7bca7158e45ab8deab68a82fe
6
right
6eaf7a3b4dbf7de787d708e4aeca0643d7190dfd48ea1d758c6741d5876fc46d
7
left
abd1f2af8516869713aed81c9f26f27b73cfb533f542009e428008b662810a09
8
left
258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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