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
Del Maro
Race
Newmarket · 9 July 2026 · 13:50
Product
Top Rated Today (Sly Man) · Top Rated — Top Consensus
Advised odds
13/8
Confidence
Medium (raw 3)
Prompt version
top_rated_v1_2026-07-08
Predicted at
2026-07-09T08:02:17.752339+01:00

Cryptographic Seal

Leaf hash
3d4ea08085646dd33e3a3596d4c51f2b5a083321f1a9a31bdb4c2c61f583acc2
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

#445

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":"2026-07-09T07:02:17Z","product":"top_rated","product_lane":"consensus","race":{"course":"Newmarket","external_id":"rac_11990732","internal_id":2636,"race_date":"2026-07-09","race_time":"13:50"},"schema":"sr-pick-v1","selection":{"advised_odds":"13/8","confidence_final":"Medium","confidence_raw":"3","horse":"Del Maro","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 left 3d4700ea47a11e7b3f3317bdf473d200f7e3a03c12786d79ede9d82cdd9e2daa
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

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