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 Izzy Fast
Race Yarmouth · 15 July 2026 · 18:40
Product Pick Winner (Mr Fox)
Advised odds 9/2
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-15T07:08:24.427122+01:00
Cryptographic Seal
Leaf hash
b1b8914eb22b7782f96c0c88d7b62ee9f274b40211e78e0f6d1d2952e09506f0
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":"2026-07-15T06:08:24Z","issuer":"saturday-racing.com","predicted_at":"2026-07-15T06:08:24Z","product":"pick_winner","product_lane":"","race":{"course":"Yarmouth","external_id":"rac_13000000871","internal_id":2917,"race_date":"2026-07-15","race_time":"18:40"},"schema":"sr-pick-v1","selection":{"advised_odds":"9/2","confidence_final":"Medium","confidence_raw":"Medium","horse":"Izzy Fast","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
b16be4ece2b1c4f64fbe9742871cd9c712dc7eab0c49ad13e1cd6bb89fc17e7f
2
right
67c0422e12a1acd0427e15e26c15b6c0661a0658e8bbfafc91ece5afee2a2f1f
3
left
7d3f3e34201cea34d585725883f6da876df072ebb0e3fe674a9200e5a98076ca
4
right
05a3c501681fbb8e9557c76f6a525f78c2faefb7938d9682c51f34aa253ccbc5
5
right
b515c4062c3466a174cab79d6cae7fdd99f13b4cb437863182cf5a599fb5f6e3
6
left
a97ebc0af6d0bd8915ad767e20d6c0d431d4e17d2e05f92661ab8e4d6c8f2844
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