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
Genbu
Race
Uttoxeter · 7 July 2026 · 15:30
Product
Top Rated Today (Sly Man) · Top Rated — Top Market Movers
Advised odds
4/1
Confidence
High (raw 55)
Prompt version
top_rated_v1_2026-07-08
Predicted at
2026-07-08T22:13:45.375557+01:00

Cryptographic Seal

Leaf hash
a334952f470098c65167f5c123143fce26f3fecc2560c78e6dba4d3ac9c23453
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 22:10:27 BST

Certificate reference

#341

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":"top_rated_v1_2026-07-08"},"committed_at":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-08T21:13:45Z","product":"top_rated","product_lane":"movers","race":{"course":"Uttoxeter","external_id":"rac_11987677","internal_id":2559,"race_date":"2026-07-07","race_time":"15:30"},"schema":"sr-pick-v1","selection":{"advised_odds":"4/1","confidence_final":"High","confidence_raw":"55","horse":"Genbu","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 a3502760bafd9c474e2d5857413559694f982f18fae89cba0fa219e63c52c38b
2 left 1253098b2d7ca67402288401cddb5368e0896d7dd1b24779ec01cb68ae03eea0
3 right 2828166431fff0865a695fa97aaf44532295cdadce957fc42f8cd063ecb48e85
4 left 4a5f204509d26a7729f490c413ed3d966174d8484fdaf1680f81ffe7df3b5ea9
5 left 6cc0f6a782452a7dd8bb107d1804797227464bdb24ff97dd4dd25dee595b1bad
6 right 122ad8c3830c8717ffb38cb520c4f4916841ee7438458e522353d27690ee23f0
7 left 8ecad2493bca745bc0527c62a707de924168e44ffe66dc178ff870ba82aa045e
8 left 9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9 left c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10 right e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294

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