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 Kayla's Friend
Race Uttoxeter · 15 July 2026 · 16:48
Product Pick Winner (Mr Fox)
Advised odds 7/2
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-15T07:05:28.037719+01:00
Cryptographic Seal
Leaf hash
329fdedfe45d1898ccb3025676dbe32caba025d69152d8fe7d29187cf3184691
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":"2026-07-15T06:05:28Z","issuer":"saturday-racing.com","predicted_at":"2026-07-15T06:05:28Z","product":"pick_winner","product_lane":"","race":{"course":"Uttoxeter","external_id":"rac_13000000806","internal_id":2913,"race_date":"2026-07-15","race_time":"16:48"},"schema":"sr-pick-v1","selection":{"advised_odds":"7/2","confidence_final":"Medium","confidence_raw":"Medium","horse":"Kayla's Friend","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
3969086dbcb43e2be49a15b190fca211bc96dd15e7b2ad7f3f165a49c1d8ff12
2
right
316a887c41977a743599a18a7dfde14646fce466e3c88d75f04aec16638f42bc
3
right
5320a5589dfab1fd5e8baa8b3c7fe0347d977d541fadbb62fe1007de99d2e57d
4
left
bd979cab238f16cea2cb4a7cd3baf27cd8d3128e0a2db45fd3fb8dd6dac0ba50
5
right
ecc115ab520d84fdc82f866f4bc64f7386a1ee51628574c7ee8665a71024bd8a
6
right
ddd2125ac2c0a6a67ecd0d29863265e6b24768d6958939fe937aafeb1b856e90
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