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 Welbury
Race Musselburgh · 22 June 2026 · 16:45
Product Horses to Watch (Sly Man)
Advised odds 11/4
Confidence Medium
Prompt version htw_backfill_v1
Predicted at 2026-07-07T09:56:15.017779+01:00
Cryptographic Seal
Leaf hash
82a0a069f8e3f644484d00a7b4de8c5c22e32aeed9c035815a61d3ee2f8cd126
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":"Musselburgh","external_id":"rac_11976354","internal_id":1969,"race_date":"2026-06-22","race_time":"16:45"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/4","confidence_final":"Medium","confidence_raw":"","horse":"Welbury","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
82fcfc42572f0c94d5f41c8068d7f9b65e67a6dba161f8fd97fd54306206b584
2
right
c6479245426cb54a655cd88ac983481b88edb635b3e6326742476be3ed49bc7f
3
right
13b3fa73142ff7f7f0dee4c2d617a5b16dd7199f027668176fbb3f86253bf6c5
4
left
6f5460a0013489ca7809b466d75c3d221bd3438ad6fd253b870e53816a94e12d
5
left
a28a6c373bbfec5b760df86c1f341027d939b8fc52996d217566314b9c0345d5
6
left
55948f4e8e29440793f46045b1f25282558c5bbca3cffc7780c2a3c54ca6d6ec
7
left
b20426c9805bd5f17d7d0c3747a91f6539d868cc80d6de1f3197b66c180d007b
8
right
f1c99ba68a2d45d1bb79f40edc8b534afd41f7a23fe00327643be3c20b514374
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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