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 Headmaster
Race Cork · 14 June 2026 · 14:37
Product Horses to Watch (Sly Man)
Advised odds 5/1
Confidence Medium
Prompt version htw_backfill_v1
Predicted at 2026-07-07T09:56:14.542920+01:00
Cryptographic Seal
Leaf hash
bd08585d7586d03f95d0549c8597ee09430016b803c05762c4b918d7d9339262
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":"2026-07-07T08:56:14Z","product":"horses_to_watch","product_lane":"","race":{"course":"Cork","external_id":"rac_11987027","internal_id":1655,"race_date":"2026-06-14","race_time":"14:37"},"schema":"sr-pick-v1","selection":{"advised_odds":"5/1","confidence_final":"Medium","confidence_raw":"","horse":"Headmaster","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
bd2dcc8703f0041dc3e410c46e5acf1c359638ab22059e8a2b4868604c671a1a
2
right
cf1d90a78a337192279de729152bdb857efa032860cf3978482b53692ee809dd
3
right
214a8cbf1e316820119fc18e9af8d025b44af4cffacce94131fbbf897176a87a
4
left
db858b9ac9b21255cf86b129cb301aba6535267ba58eaaff1de4abd7f35feb48
5
left
013b5dd9bc44e968efcea842f4f2deae38d5bd63b39edfb080a29a12d494ea6a
6
right
204feec8495b2d1b806e60958c15c429141021ee238922bdfcbd4c87367079be
7
right
7b966ba7fb6479ee18f2a8f9b8925b3c3366b9fe81cdbeb08938a02c83890686
8
right
f384b0629d9042022b8062f38497000b02dafa843e81b7fba3c37144f3b49f92
9
right
559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10
left
f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55
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