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 Ernst Blofeld
Race Ascot · 11 July 2026 · 16:12
Product Pick Winner (Mr Fox)
Advised odds 15/8
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-11T07:47:39.782683+01:00
Cryptographic Seal
Leaf hash
e13785711609eb17f8a2bc325640ce66ad8d88fd3b6817505b79f21d8df6adb2
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":"2026-07-11T06:47:39Z","product":"pick_winner","product_lane":"","race":{"course":"Ascot","external_id":"rac_11991031","internal_id":2704,"race_date":"2026-07-11","race_time":"16:12"},"schema":"sr-pick-v1","selection":{"advised_odds":"15/8","confidence_final":"Medium","confidence_raw":"Medium","horse":"Ernst Blofeld","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
e108b7a51b75d7eb422dcfbe5f36e96504c2bf1f808eed7437548ed4d54eea48
2
right
5250813664cc0e3665909ba130596b2629c82c2c691360f211c83c074c6d9c3f
3
left
9c79ef4fa07db3149c2b8cd4ac3f23a1ab3539813f3bf00faf778344101776b5
4
right
2cc75a11138596c821ae971d2f135fbea346c9ab15d2ea2034a4a6898407884e
5
left
c3c4ffb271c68a9d689182917ef3942747a6040af5ce1ca8abe1fc90165e5dd4
6
left
b495d7542cc68c4b7514051aff9c40ee645b401fdf6a48deafd015554c949f6a
7
left
18098d0ad2005f6c8a767a2aceec92cb16c50e0350a0aeb358818e8c739d9967
8
right
f384b0629d9042022b8062f38497000b02dafa843e81b7fba3c37144f3b49f92
9
right
559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10
left
f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55
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