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 Ottoman
Race Leicester · 14 July 2026 · 14:54
Product Pick Winner (Mr Fox)
Advised odds 11/4
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-14T09:20:29.531551+01:00
Cryptographic Seal
Leaf hash
c16c5449a4355c37cf89834cc3dcc9211b49a1018a4f84513507084dd6790b64
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":"2026-07-14T08:20:29Z","issuer":"saturday-racing.com","predicted_at":"2026-07-14T08:20:29Z","product":"pick_winner","product_lane":"","race":{"course":"Leicester","external_id":"rac_13000000273","internal_id":2835,"race_date":"2026-07-14","race_time":"14:54"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/4","confidence_final":"Medium","confidence_raw":"Medium","horse":"Ottoman","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
c062f969a10347e16742de675ab5fab0ebea8579cf36d3d456d7ad25ffe684de
2
right
cd6b00927b6bd3c2900a833cdeb72a27e5dbb73b0ecedc3870d488ea36f83a9f
3
right
afe98c435141617a3ff9da0a41566297adc7202abd94a87fd46c5fa484350baf
4
right
d32cd3a310dd8439551c37289e64ca03d46b8a207fd8eaa7b8ac2c81860a895d
5
right
72ee2de6c39840acb0528e55c9e99ddce199858fd5ab338ff7eea87a593ce728
6
left
abd12faeb52c427343562ce8e6bf60625ad79e5f896c6c45b4a2dd7167c50de3
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