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
Thewaybackhome
Race
Kilbeggan · 10 July 2026 · 20:17
Product
Pick Winner (Mr Fox)
Advised odds
15/2
Confidence
Medium
Prompt version
v3_b557cbd4
Predicted at
2026-07-10T09:32:06.890778+01:00

Cryptographic Seal

Leaf hash
7f9bafe8c3c8a3438de0c85955acb9c73f8280633ed778716661c96a5912fc47
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 22:10:26 BST

Certificate reference

#502

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":"llm","prompt_version":"v3_b557cbd4"},"committed_at":"2026-07-13T21:10:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-10T08:32:06Z","product":"pick_winner","product_lane":"","race":{"course":"Kilbeggan","external_id":"rac_12017993","internal_id":2699,"race_date":"2026-07-10","race_time":"20:17"},"schema":"sr-pick-v1","selection":{"advised_odds":"15/2","confidence_final":"Medium","confidence_raw":"Medium","horse":"Thewaybackhome","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 7fbacea1aec7eeb4571dfcdd213386646a40391e7014274b3b0b1af8f0e8306a
2 right db7ad0c89294be93c1e09240736d00a8752d549b6bdc2e182030f0c2dd922401
3 right c0c299c7eeebceb2d45ac68fa9b545e3773481e7ccf01c17848b77ab52f0c77d
4 right e1a58408f4b742fc467a0c54cdb516dc6e0b8fc324cb984a63bcdf9c56ffa73f
5 left a28a6c373bbfec5b760df86c1f341027d939b8fc52996d217566314b9c0345d5
6 left 55948f4e8e29440793f46045b1f25282558c5bbca3cffc7780c2a3c54ca6d6ec
7 left b20426c9805bd5f17d7d0c3747a91f6539d868cc80d6de1f3197b66c180d007b
8 right f1c99ba68a2d45d1bb79f40edc8b534afd41f7a23fe00327643be3c20b514374
9 left c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10 right e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294

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