VERIFIED · SR-PICK-V1 · SATURDAY RACING · VERIFIED · SR-PICK-V1 ·
SR
AUTHENTICATED
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 Our Guide
Race Worcester · 10 July 2026 · 18:41
Product Pick Winner (Mr Fox)
Advised odds 11/8
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-10T09:29:13.675231+01:00
Cryptographic Seal
Leaf hash
ad8ab3f4d2298240b26c6e6fb0810f18b2fc915909a4ef2d9b28c0abd6f3b5bf
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":"llm","prompt_version":"v3_b557cbd4"},"committed_at":"2026-07-13T21:10:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-10T08:29:13Z","product":"pick_winner","product_lane":"","race":{"course":"Worcester","external_id":"rac_11987703","internal_id":2674,"race_date":"2026-07-10","race_time":"18:41"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/8","confidence_final":"Medium","confidence_raw":"Medium","horse":"Our Guide","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
acafbbd18b1f40fc37721b550e53adce14248f62d32b7a68de927ace7409fb30
2
right
d4bd377eed92e0531116a6a1874a1196262dd85938f85a38a8d6b31ed6508e0c
3
right
9c2f46296ae3c0dc7b8cb6851e712bd725e449d5703a4880ee07940dfa6265de
4
left
482fe0df5cb19d96611cc9ee51520d2ef088a00f3e06c4a3f0ee462f98d71ef8
5
left
144959ae456bbc727f1991fa893d2e1aef3deb58747954bbd3b01a9d5607bb29
6
left
a0db52a97d82a2741b38fc0eeb784af6793ea6882d82b807019bad2067115cb4
7
left
8ecad2493bca745bc0527c62a707de924168e44ffe66dc178ff870ba82aa045e
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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