Certificate of Pick Authentication #414 · Saturday Racing

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: Bowensonfire
Race: Limerick · 2 July 2026 · 17:20
Product: Top Rated Today (Sly Man) · Top Rated — Top OR Ratings
Advised odds: 11/4
Confidence: High (raw 148)
Prompt version: top_rated_v1_2026-07-08
Predicted at: 2026-07-08T22:13:45.944415+01:00

Cryptographic Seal

Leaf hash: 2cf9bc608af65a81d1e77c3e9ae4b1786a444f13ffcb9ab15eb7ee4db79c50b1
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":"top_rated_v1_2026-07-08"},"committed_at":"2026-07-13T21:10:28Z","issuer":"saturday-racing.com","predicted_at":"2026-07-08T21:13:45Z","product":"top_rated","product_lane":"ratings_or","race":{"course":"Limerick","external_id":"rac_12008087","internal_id":2389,"race_date":"2026-07-02","race_time":"17:20"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/4","confidence_final":"High","confidence_raw":"148","horse":"Bowensonfire","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.

#	Position	Sibling hash
1	left	2cbba7b4ee3860d8e2feba224df6f59576803f04bf8a34c0f17e50fced7b324c
2	right	1b150358a4d7a4f926e0e8c39ef8093c7c71d63eaf0edb998dba7906c4eebc4d
3	left	ce55ea6b9a1f59c154ed70e883f744e68f6b8823a408cd3d09102e708a56cbfb
4	right	c5cb19c52ac286b7dfac66916c18b3a39c85a6a224be285fe3b4c244bcb0ffa5
5	right	3e0f8231daebd0e796cd717336eb322ee18dc97f3c190073f937036a0fef207f
6	right	7b82e1439f3e2ced375831c6c20f3fbb9f5a25088a3ad284db7ae38222b4fb9a
7	right	5f0f7abcd778c76063fcb7f47d37dd69ca800d95c3310c502cc42ed16873af2c
8	left	258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9	right	a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10	right	e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294

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