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 Darkened Edge
Race Bath · 15 July 2026 · 15:31
Product Pick Winner (Mr Fox)
Advised odds 10/3
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-15T07:03:26.134848+01:00
Cryptographic Seal
Leaf hash
fbb70cfe2d70ff063058cc61b2cce688e77c4688b3c6e879b10e1cdff0c13624
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":"2026-07-15T06:03:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-15T06:03:26Z","product":"pick_winner","product_lane":"","race":{"course":"Bath","external_id":"rac_13000000533","internal_id":2894,"race_date":"2026-07-15","race_time":"15:31"},"schema":"sr-pick-v1","selection":{"advised_odds":"10/3","confidence_final":"Medium","confidence_raw":"Medium","horse":"Darkened Edge","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
f5ddf1a21ebdba2952ba7b8bcee0dc85140ff0b1a6a29093b71323d51f69991e
2
right
19780d96b16686c01c865b6e8250e944102ee2307c81a119f4ccd85bc4a45ce2
3
right
47504ef97585447af39f743f1357bf3a7d86e27e2baf9df6e1751b4c61c252a4
4
left
896c243868fa9d5144766bd876ef0f18d94dea1af5017cd256384d157dcc3d16
5
left
64d00890f61a1e1a5273bc9ede60a5f43c22366c07e1747364dee9b9cd1d5dc9
6
left
a97ebc0af6d0bd8915ad767e20d6c0d431d4e17d2e05f92661ab8e4d6c8f2844
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