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 Coconut Bay
Race Catterick · 8 July 2026 · 14:00
Product Pick Winner (Mr Fox)
Advised odds 4/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-08T07:47:48.974533+01:00
Cryptographic Seal
Leaf hash
04c7ebd1effdc749159dec84c9cfe8142be97b4e30015235cf473c82334a6b3d
Your browser
…
Batch
13 July 2026 · 709 leafleaves
· inspect batch →
Merkle root
eba1d4cb07b18df5f26ea6211dae664c2a8d9ce7bdcd95a3a7d9da03ed6cf62b
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":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-08T06:47:48Z","product":"pick_winner","product_lane":"","race":{"course":"Catterick","external_id":"rac_11990225","internal_id":2577,"race_date":"2026-07-08","race_time":"14:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"4/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Coconut Bay","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
050cebcc74f7ec5481642999cde46b1864df196b9554d27a5261d271aff95170
2
left
19162c074f13feabda730aaaa68a538cd8bc2734d7a694b7cafa0d7419652a3c
3
right
ca408dfd8d04e7c28bfb30c91c55894c606439003f5dd96a42a470124ba75aa1
4
left
296e58954fc87676d3b6c16a18ab9bdd46df991cdffae9426d4135a59f03b085
5
right
ca53ef3fd171e0565048e3b7ef22209c70a4ebf16fd56a95c0461d55050a3323
6
right
176dfb74ea168aed799314f1c1366361f5a82fdfca5ef82a72a3c3a04d0a9176
7
right
a1446b8f053c3881b7e667ad2875514c1369218939a0da4c16d065175c0bd80d
8
right
7f26ee208367c64ad8017566de1de4e6ffc26d447963c5f0ab2e3225cec0656b
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
Print / save this certificate