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 Premier
Race Southwell (AW) · 5 July 2026 · 16:50
Product Pick Winner (Mr Fox)
Advised odds 13/8
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-04T22:21:28.704983+01:00
Cryptographic Seal
Leaf hash
8dbb0723b5d2ff0deb4b7ab02dcb55fc58e32bf5afe5ce8407d8f3c56d220a49
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":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-04T21:21:28Z","product":"pick_winner","product_lane":"","race":{"course":"Southwell (AW)","external_id":"rac_11984908","internal_id":2504,"race_date":"2026-07-05","race_time":"16:50"},"schema":"sr-pick-v1","selection":{"advised_odds":"13/8","confidence_final":"Medium","confidence_raw":"Medium","horse":"Premier","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
right
8dd412bd27f6b892919f196c161fbd9b838bc086d1514d684e97f15c77f6fe6c
2
right
85d54ec4402e7de6e484d0ea667590ea440fcbf7c0b56576fe74982b36a97d1e
3
right
0bf0b6228120889a5499a7e86dddb16082806101c1f3206472b6ccb842b4490f
4
right
b589976bb0310e100b89188454576986991b17e90dfa591df5cbe75341a811f3
5
right
fe08e96ade7fc821154c30afa831e006a5b4ee8fe67c36f3e2da45d09ac142e9
6
left
de4c18b344759b795e65fd7d556764fb84fe70fe3ed694d8fbe24938047d102e
7
right
4c56aa4f1d1039c6ad4821c5c72376f7d1ccb9ab4f942fb7d343352d40712b8c
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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