VERIFIED · SR-PICK-V1 · SATURDAY RACING · VERIFIED · SR-PICK-V1 ·
SR
AUTHENTICATED
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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 Jafimgoso
Race Newton Abbot · 23 June 2026 · 20:20
Product Horses to Watch (Sly Man)
Advised odds 5/2
Confidence Medium
Prompt version htw_backfill_v1
Predicted at 2026-07-07T09:56:15.101977+01:00
Cryptographic Seal
Leaf hash
e856d14aa9593d52eac26bada6863e38171fec1c25153ae3404da3b33a0fb039
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":"story_score","prompt_version":"htw_backfill_v1"},"committed_at":"2026-07-13T21:10:28Z","issuer":"saturday-racing.com","predicted_at":"2026-07-07T08:56:15Z","product":"horses_to_watch","product_lane":"","race":{"course":"Newton Abbot","external_id":"rac_11973481","internal_id":2010,"race_date":"2026-06-23","race_time":"20:20"},"schema":"sr-pick-v1","selection":{"advised_odds":"5/2","confidence_final":"Medium","confidence_raw":"","horse":"Jafimgoso","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
e8866013d37d8a91b344985dd005b50efae1b8adb5c8c7836331bf51f7a0e65d
2
left
bf07460fbd1d463594cb325f7ecb03571d3da57b4a739761114fb58adc0e8945
3
right
2554c8eaa0cc2d073734361c901866d75031ea75c8bac07fa8dd2a9f308ead28
4
left
f4ba71f6e3bd585f070eb3ac852496e12ab993c7f51cf033f7895aad8996046d
5
right
3e35cbb152ebdc46b7a561064613c01e3e78fc967395af21bb7fe503b0a56b43
6
right
da3d768220597c0636847e1f28e766d918af491f20ffa568c070cdc81dea7c6a
7
right
7b91ffdbc0775ceb1efdc9c047cbf134a340783b2dc1627173e9cef778ec1cf8
8
left
5029b4611810c87e9e04fd3af160ed33fa21436626c66ccbd825c959f40bd90c
9
right
559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10
left
f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55
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