Formal verification for smart contracts. We built a toolchain that compiles Lean 4, a language for mathematical proof, directly to deployable on-chain binaries. You write your contract and its safety invariants in the same file. The compiler checks the math and rejects anything that doesn't prove. What ships is provably bug-free for every property you stated: no reentrancy, no balance leaks, no unbounded compute. Deploys to Solana and every WASM chain: Stellar, Cosmos, Arbitrum, NEAR, Polkadot.