Saturday Racing · The Transparency Ledger

Certificate of Pick Authentication

Issued under schema SR-PICK-V1

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
Binhareer
Race
Ascot · 20 June 2026 · 17:00
Product
Horses to Watch (Sly Man)
Advised odds
4/1
Confidence
Medium
Prompt version
htw_backfill_v1
Predicted at
2026-07-07T09:56:14.893399+01:00

Cryptographic Seal

Leaf hash
373a342a8e1c855ad98575af2838cb7d965d349aa507c6082d0aa37a83d631e3
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.

Signed

Saturday Racing Editorial Ledger

Committed 13 July 2026 at 22:10:28 BST

Certificate reference

#145

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_11947910","internal_id":1882,"race_date":"2026-06-20","race_time":"17:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"4/1","confidence_final":"Medium","confidence_raw":"","horse":"Binhareer","position_claim":"win"}}

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.

#PositionSibling hash
1 right 375e7b9a2ec7d2805bd194f699ecc7f862239717f6caf9955fa166ba3253f6d9
2 right 04bdcb665fe43d08eafcb820f344cb966dee97aed52d3b58a131272d8c814111
3 right 86eef90944462b52a5db52707862c7e144703ad22e085d6fc971b29f3d9e3e23
4 right 41761ac9854e33c44348993ad3261e676d24ad173c344b74ecb3e8b5437faaba
5 right e7b21ecf251b2a0abf7ba5f104efc2c3e8b3962d1a53b22acb2191b8b4f96554
6 left f711bae12213bc1541e7e9261b3cfba05f29b86200f13fa0a0a0591106c845f9
7 right 5f0f7abcd778c76063fcb7f47d37dd69ca800d95c3310c502cc42ed16873af2c
8 left 258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9 right a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10 right e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294

Server-reported status: off_chain_verified · Ledger overview at /verify/