VERIFIED · SR-PICK-V1 · SATURDAY RACING · VERIFIED · SR-PICK-V1 ·
SR
AUTHENTICATED
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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 Highland Harvey
Race Yarmouth · 15 July 2026 · 19:10
Product Pick Winner (Mr Fox)
Advised odds 13/8
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-15T07:09:22.436793+01:00
Cryptographic Seal
Leaf hash
e6de8a8bb32f55b9d9d7b6c67e21171d4f88ff6cbd7129d461e2a6c87b1753c7
Your browser
…
Batch
15 July 2026 · 60 leafleaves
· inspect batch →
Merkle root
e4408eaba1df1a5c38c539864028dfae01482f63ce7383bbf8cabee5597ad9af
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":"2026-07-15T06:09:22Z","issuer":"saturday-racing.com","predicted_at":"2026-07-15T06:09:22Z","product":"pick_winner","product_lane":"","race":{"course":"Yarmouth","external_id":"rac_13000000884","internal_id":2918,"race_date":"2026-07-15","race_time":"19:10"},"schema":"sr-pick-v1","selection":{"advised_odds":"13/8","confidence_final":"Medium","confidence_raw":"Medium","horse":"Highland Harvey","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
e40a8a7ab8167e8948514089a51470dd30a55718d55b396c6e082b6e53569c8c
2
left
3ae416ee3a3d79aca3069861a1fed37081593d04b1e3271c09421b50a09b8889
3
right
ca2c80861220e0884b84d025f600c33d43762234e38bbd6c8811790e9fea5d7e
4
right
f9fa14670db6af8a07593fb6246a1e734ea76d012f145df137be1c613f071905
5
left
64d00890f61a1e1a5273bc9ede60a5f43c22366c07e1747364dee9b9cd1d5dc9
6
left
a97ebc0af6d0bd8915ad767e20d6c0d431d4e17d2e05f92661ab8e4d6c8f2844
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