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 Charles Darwin
Race Ascot · 19 June 2026 · 15:05
Product Horses to Watch (Sly Man)
Advised odds 11/1
Confidence Medium
Prompt version htw_backfill_v1
Predicted at 2026-07-07T09:56:14.856031+01:00
Cryptographic Seal
Leaf hash
0c36997a3289abc0f175c33f4efc6a7e25909ce064dd85541eb5f10828e70a92
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":"Ascot","external_id":"rac_11931569","internal_id":1823,"race_date":"2026-06-19","race_time":"15:05"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/1","confidence_final":"Medium","confidence_raw":"","horse":"Charles Darwin","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
0c10064c58d2ac1271c845f92790ecfbfc6cdc3f45c82d1216a3084480a8cb9d
2
left
f37f34479201bb1941148727105227efffb625a53cb7acdf07c13f8ab7fabfa4
3
right
8ce71b71ed591cf3fcd0364f59dc59be5873ff18858cb683701b2399d65986bd
4
right
33cef19e7b23cfa5e4c62a7bde0aba90ed9fb27783b52f31f79c56e0c441c3fb
5
right
8f4a0fd246d462fe2734244e69f67fde160b71cf86c07701b68e4e2ede4983a5
6
left
28a79af419252db0d5355ceb206307eccea1dfa0bc74e1b70403c4125df54885
7
right
a1446b8f053c3881b7e667ad2875514c1369218939a0da4c16d065175c0bd80d
8
right
7f26ee208367c64ad8017566de1de4e6ffc26d447963c5f0ab2e3225cec0656b
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
Print / save this certificate