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 Hot Silk
Race Leicester · 14 July 2026 · 16:30
Product Pick Winner (Mr Fox)
Advised odds 15/8
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-14T09:23:40.869503+01:00
Cryptographic Seal
Leaf hash
1feef9cc913342152717c2edd86bae5a6c1887dada7ac1a0d4c99ad010f8b6de
Your browser
…
Batch
14 July 2026 · 40 leafleaves
· inspect batch →
Merkle root
072e707d9142102581b7395437488a0c34e70eca6717bd16f437ee6a3030212a
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":"2026-07-14T08:23:40Z","issuer":"saturday-racing.com","predicted_at":"2026-07-14T08:23:40Z","product":"pick_winner","product_lane":"","race":{"course":"Leicester","external_id":"rac_13000000312","internal_id":2838,"race_date":"2026-07-14","race_time":"16:30"},"schema":"sr-pick-v1","selection":{"advised_odds":"15/8","confidence_final":"Medium","confidence_raw":"Medium","horse":"Hot Silk","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
1e4c0329d82e749b86bb2ed16d5b52ec89bae74c1924c17c05fc21fb7ff01cf7
2
left
16432bb484a203f4a10e1e590646c116481f25415653cc32626e3522ddc9e64d
3
left
5e7ff133b9f0d8d93aeb31b103f2fbc11519dfa9126cbb13712486988063719a
4
right
3f174317dcaf8c24a797a38e1b7eddeed15ecda3f9bfaf312435af4c3e58cadd
5
right
aa769b978034ee19a563d4739b58c2e3f4bf033bf01a066e1155e06a1b5193e3
6
right
1172ad24b701d8eee390448495367143c88291d705fba7a117c56c25df2973af
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