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 Machadadorp
Race Newmarket · 11 July 2026 · 14:15
Product Pick Winner (Mr Fox)
Advised odds 7/2
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-11T07:43:23.046499+01:00
Cryptographic Seal
Leaf hash
e371283961ca03ec949747f903b004e5068d9e5e65ce444863409f996c0520b7
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":"2026-07-11T06:43:23Z","product":"pick_winner","product_lane":"","race":{"course":"Newmarket","external_id":"rac_11990875","internal_id":2723,"race_date":"2026-07-11","race_time":"14:15"},"schema":"sr-pick-v1","selection":{"advised_odds":"7/2","confidence_final":"Medium","confidence_raw":"Medium","horse":"Machadadorp","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
e28b960cdb4e12807188e3f0889c2f5f931b832ababab1cb263f630413e5ac32
2
left
994dee36f59fa5ba05c86cad70ccfdc3a7a4ccf113b6d257cc0b1102b5fd4ebb
3
right
08586e637e638c33ef08df1c8b1194dd5c10e4f123e5814924e066afa56c8be8
4
left
1f7fe33bf239035e6e8536cd8b60b20a72b35207b42dfc4ffb167eedcc798fd8
5
left
c3c4ffb271c68a9d689182917ef3942747a6040af5ce1ca8abe1fc90165e5dd4
6
left
b495d7542cc68c4b7514051aff9c40ee645b401fdf6a48deafd015554c949f6a
7
left
18098d0ad2005f6c8a767a2aceec92cb16c50e0350a0aeb358818e8c739d9967
8
right
f384b0629d9042022b8062f38497000b02dafa843e81b7fba3c37144f3b49f92
9
right
559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10
left
f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55
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