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 Boatswain
Race Southwell (AW) · 5 July 2026 · 17:55
Product Pick Winner (Mr Fox)
Advised odds 2/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-04T22:22:42.376860+01:00
Cryptographic Seal
Leaf hash
24c3ce66d2cfea7e610e163746308c1afd04ad9dcd01e8d0558e566ad526cad7
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":"2026-07-04T21:22:42Z","product":"pick_winner","product_lane":"","race":{"course":"Southwell (AW)","external_id":"rac_11984934","internal_id":2506,"race_date":"2026-07-05","race_time":"17:55"},"schema":"sr-pick-v1","selection":{"advised_odds":"2/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Boatswain","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
255ffc209d6bcc3cd83f897b05d051c0eed61e7724d8a6ecb1640dee24ba99fc
2
right
d78b40a7df10ea7fbe756e37e5d642ce5e952ca1182908a7d8b437ae9ce2fa91
3
left
69a052d8d6ae1f09fb9fa2aae34a96ec76473bcda3d4714137e24bbfb03665c0
4
left
7c9c6dffaa3557a8d30b906bfff1fedf95b4e65e3aa27ccc26628dd6aae2d0f7
5
right
efb4763ba2262df820e6316697d4b85fec3f6c4ca1f152c85cfcd1bb91db0efb
6
left
d2f5951c321258f1da44d8e3609710b4c9c90fac4d41e3ca7536c70ae340789e
7
left
0af567e55c1ca3698f0d247913af3961bd1e207eb3c7b8dd318659719ff7e32e
8
right
7f26ee208367c64ad8017566de1de4e6ffc26d447963c5f0ab2e3225cec0656b
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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