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 Homestrait
Race Carlisle · 9 July 2026 · 16:55
Product Pick Winner (Mr Fox)
Advised odds 11/2
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-08T18:59:27.449456+01:00
Cryptographic Seal
Leaf hash
9278209d2c9b13b5e21174e2effda3b2434a0bd40148fe5eeb728afc50caee11
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":"2026-07-08T17:59:27Z","product":"pick_winner","product_lane":"","race":{"course":"Carlisle","external_id":"rac_11990446","internal_id":2615,"race_date":"2026-07-09","race_time":"16:55"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/2","confidence_final":"Medium","confidence_raw":"Medium","horse":"Homestrait","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
9234afdc036b3a7c44a8a6711acc0acb23b1d1c721bded96165479c694e91fab
2
right
befd63679e431dfd69c9768b6336fe1d9d976cd9d3d8b451a51ae469e70e44ee
3
left
8d91e1d12c20558f716eb9f6be13cd079a518242dd4f66b067fe342a151870f8
4
left
3e2c17e6cdd97033b1a3886fbb50813f4da21a7ab3552dc4a92fcdd4f7a8f0aa
5
right
fe08e96ade7fc821154c30afa831e006a5b4ee8fe67c36f3e2da45d09ac142e9
6
left
de4c18b344759b795e65fd7d556764fb84fe70fe3ed694d8fbe24938047d102e
7
right
4c56aa4f1d1039c6ad4821c5c72376f7d1ccb9ab4f942fb7d343352d40712b8c
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
Print / save this certificate