I perform a focused, local/devnet-first security review of smart contracts, wallet flows, payment/escrow logic, and Web3 APIs for Solana or EVM systems.

Deliverables:

- threat model and prioritized findings

- deterministic local or devnet proof of concept where appropriate

- severity/impact analysis and practical remediation

- regression tests or a focused patch when the codebase is available

- concise evidence package with hashes and reproduction steps

I do not request private keys, custody funds, use social accounts, or test live funds without explicit written authorization. Work is milestone-based and can start with a small scoped review. Fixed-price packages start at 200 USDC, with escrow before implementation.