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 Heart Sign
Race Lingfield (AW) · 6 July 2026 · 14:15
Product Pick Winner (Mr Fox)
Advised odds 7/4
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-06T07:56:01.498068+01:00
Cryptographic Seal
Leaf hash
55faa1e9db2e5b9cd6434e11da99e5b886e209399f07675e6790f423fb2b6096
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":"2026-07-06T06:56:01Z","product":"pick_winner","product_lane":"","race":{"course":"Lingfield (AW)","external_id":"rac_11991980","internal_id":2514,"race_date":"2026-07-06","race_time":"14:15"},"schema":"sr-pick-v1","selection":{"advised_odds":"7/4","confidence_final":"Medium","confidence_raw":"Medium","horse":"Heart Sign","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
55f2e3988c7f66adb8e2e72fd0ed371a412597589221ab04771b38df7ac6fd77
2
left
4c3c74ca92f6abfdba775474196686dba21bad03a5443797f19f88653388e5f1
3
left
3377f34eccfa34d2ed93811e80a5ce6c24430367cf83fb32aad08309ca58cd25
4
left
512f0c307167bff1d6ff425d45f3a439a43cd4cb2ab6ed2963b9e0b6e12b6039
5
right
8482e981bcd79800d8fe2d1ac2fc4e783eb3f5a068d13e0f7b209a25cf2a3317
6
left
fc52f76fefc833e1107b03796f834d4ba1336aeb1778053c068d9688bda96b1d
7
left
abd1f2af8516869713aed81c9f26f27b73cfb533f542009e428008b662810a09
8
left
258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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