Module 05
Write your own contracts, and when to build on Doppler instead
Ship a parimutuel market program on Solana with a time multiplier, an audit-driven test suite and a server that treats the chain as the only truth, then learn the rule for when a custom contract is worth it.
Episode 5
I wrote 1,300 lines of Rust. A hook would have been 180
One episode opens the module, built from the real repo and the real decisions.
What you ship
A two-option parimutuel market on devnet that real wallets can bet on, resolve and claim from, plus one exploit test that attacks your own program and proves it holds.
Ends with a live transaction
Starter
Open source, so you can copy it and build your own product on it, with the plugin coaching you through this module.