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 Dream Deal
Race Pontefract · 7 July 2026 · 16:48
Product Pick Winner (Mr Fox)
Advised odds 13/8
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-07T08:01:11.250036+01:00
Cryptographic Seal
Leaf hash
8d5a43eb3f420758ab3a4c611ab3d821884026d504133c902d40a98bb81b9c05
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":"2026-07-07T07:01:11Z","product":"pick_winner","product_lane":"","race":{"course":"Pontefract","external_id":"rac_11990134","internal_id":2554,"race_date":"2026-07-07","race_time":"16:48"},"schema":"sr-pick-v1","selection":{"advised_odds":"13/8","confidence_final":"Medium","confidence_raw":"Medium","horse":"Dream Deal","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
8d1aa86523f0d0dc637b8963eb90938d94674fde778b6e4b5b99289a23b03bb2
2
left
3039b4053f6040782338b388a26dc83cb33997e6b3370c015f7aa9d440022718
3
left
f2f08515f75e2f60b3c73c681d5fd7c3220d36d2317fb2a5a83fdb76cefbec22
4
left
95c540b527182fe3b5572a9c26efe357d97f8617d542250e1ade7883c6ffb015
5
left
fd97ad31d6f01aebddc372d49b6d4447ff69649838e727428b09fba1749127fc
6
right
9cd04c901322f010a3f4b765f8334a04feb06990354fccd9484e7e135228e743
7
right
4c56aa4f1d1039c6ad4821c5c72376f7d1ccb9ab4f942fb7d343352d40712b8c
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
Print / save this certificate