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 Gressington
Race Ayr · 13 July 2026 · 15:30
Product Pick Winner (Mr Fox)
Advised odds 13/2
Confidence Speculative
Prompt version v3_b557cbd4
Predicted at 2026-07-13T09:32:25.672226+01:00
Cryptographic Seal
Leaf hash
3cd6abf4f7e8be064999a48aac5af26786e8d6e842a62b65f01580d37a6c16da
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":"2026-07-13T21:10:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-13T08:32:25Z","product":"pick_winner","product_lane":"","race":{"course":"Ayr","external_id":"rac_11999728","internal_id":2788,"race_date":"2026-07-13","race_time":"15:30"},"schema":"sr-pick-v1","selection":{"advised_odds":"13/2","confidence_final":"Speculative","confidence_raw":"Speculative","horse":"Gressington","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
3d1ce750302f5077e6b49a209937409e47a9c10fe1074f46c6dfea925adae257
2
left
7923d0f974d70c123ba9531ff0d163ebeeabd0f0e28176aa1fdaaf11ccab3fd7
3
right
c6c9de8f6bf39ce43913f5f3db6c05ba43afac80438d3b11ef0faf354033d7f4
4
left
870654b00f64caaa6513573798de4a344431cca7efc0154181d7c424fe10a088
5
right
e7b21ecf251b2a0abf7ba5f104efc2c3e8b3962d1a53b22acb2191b8b4f96554
6
left
f711bae12213bc1541e7e9261b3cfba05f29b86200f13fa0a0a0591106c845f9
7
right
5f0f7abcd778c76063fcb7f47d37dd69ca800d95c3310c502cc42ed16873af2c
8
left
258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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