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 Thickthorn Tom
Race Stratford · 12 July 2026 · 16:10
Product Pick Winner (Mr Fox)
Advised odds 11/4
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-12T09:30:19.215027+01:00
Cryptographic Seal
Leaf hash
074e256ed0ad23f71612fdeb3da72fe37805be8d04f63934e3a8e52b88374490
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":"2026-07-12T08:30:19Z","product":"pick_winner","product_lane":"","race":{"course":"Stratford","external_id":"rac_11987924","internal_id":2767,"race_date":"2026-07-12","race_time":"16:10"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/4","confidence_final":"Medium","confidence_raw":"Medium","horse":"Thickthorn Tom","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
0775c88f2a2e90f0ec3826c152b7ed9388d93f113eb67588f8c37c0a291c267c
2
left
bab3b23fb1bf48c4753fa0b8392f0a182944d9453825a87390dfeb6be3fcbd9f
3
right
f886f07bc36a7b156e7a9b8a91ed147d213e9e75734eed1bff8cbcdfdf15ed27
4
right
db6965e849b6870da9c06ac6ffcb051ee1b59cbd5a26dce9c83e69effe13f61c
5
left
397481a13fc9f952f7171371b43350cc56a626159dd2a62c532b87e7335a7e82
6
right
176dfb74ea168aed799314f1c1366361f5a82fdfca5ef82a72a3c3a04d0a9176
7
right
a1446b8f053c3881b7e667ad2875514c1369218939a0da4c16d065175c0bd80d
8
right
7f26ee208367c64ad8017566de1de4e6ffc26d447963c5f0ab2e3225cec0656b
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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