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 Perseus Way
Race Hexham · 21 June 2026 · 15:43
Product Horses to Watch (Sly Man)
Advised odds 4/5
Confidence Medium
Prompt version htw_backfill_v1
Predicted at 2026-07-07T09:56:14.966552+01:00
Cryptographic Seal
Leaf hash
3d4700ea47a11e7b3f3317bdf473d200f7e3a03c12786d79ede9d82cdd9e2daa
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":"Hexham","external_id":"rac_11973416","internal_id":1942,"race_date":"2026-06-21","race_time":"15:43"},"schema":"sr-pick-v1","selection":{"advised_odds":"4/5","confidence_final":"Medium","confidence_raw":"","horse":"Perseus Way","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
3d4ea08085646dd33e3a3596d4c51f2b5a083321f1a9a31bdb4c2c61f583acc2
2
right
12b856c99fd9c2ef5c6f0f884437d830d6971c89862bde804f25e1e5de4deb41
3
left
cb010714926e03af131eb6e030c8e771a95a66e8929abfd8ebe5610584804ff1
4
left
870654b00f64caaa6513573798de4a344431cca7efc0154181d7c424fe10a088
5
right
e7b21ecf251b2a0abf7ba5f104efc2c3e8b3962d1a53b22acb2191b8b4f96554
6
left
f711bae12213bc1541e7e9261b3cfba05f29b86200f13fa0a0a0591106c845f9
7
right
5f0f7abcd778c76063fcb7f47d37dd69ca800d95c3310c502cc42ed16873af2c
8
left
258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
Print / save this certificate