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 Leonardo Blu
Race Windsor · 13 July 2026 · 17:50
Product Pick Winner (Mr Fox)
Advised odds 7/4
Confidence High
Prompt version v3_b557cbd4
Predicted at 2026-07-13T09:35:24.923047+01:00
Cryptographic Seal
Leaf hash
f8db7187b7a1d16fbddbfe8efd2e85b2ddfa7769e6f461edc07c59ed2539004b
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":"2026-07-13T08:35:24Z","product":"pick_winner","product_lane":"","race":{"course":"Windsor","external_id":"rac_11999806","internal_id":2807,"race_date":"2026-07-13","race_time":"17:50"},"schema":"sr-pick-v1","selection":{"advised_odds":"7/4","confidence_final":"High","confidence_raw":"High","horse":"Leonardo Blu","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
f926283144ed9a3311a14a8c8e7823af8a3c9c1c68a9682c24bfd9826393c0f9
2
right
3f7dbc03825903833f73e8973cbe1f31a7f06c8221504c32983e65f877c8424e
3
left
4e946788bf15b4295bcbe833e3a2e89be350bc0c3c01d2949c8852149ce2225f
4
right
abec916874072b960c839a26de476f086c09fc5300f84d8701e25464e2194b0b
5
left
23ff48395ca186d38a777118fb73cb9068fcbfc92f8171b4f9b24d5522494c66
6
left
0f9b71a99f95ac0b56f346d24cfbb5b52b60e187c7de3d78c741e3c20926b373
7
right
7b91ffdbc0775ceb1efdc9c047cbf134a340783b2dc1627173e9cef778ec1cf8
8
left
5029b4611810c87e9e04fd3af160ed33fa21436626c66ccbd825c959f40bd90c
9
right
559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10
left
f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55
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