Why was Kaspa rewritten in Rust?

Kaspa was rewritten in Rust to reach maximum efficiency and support higher block and transaction rates. The original codebase accumulated technical debt through years of research and development, leaving some parts fragile and difficult to extend. A performance-oriented language was identified as necessary for the next generation of the system, and Rust was chosen because it combines that performance focus with high-level constructs needed to build something as complex as Kaspa. For a beginner, this means the team laid a stronger technical foundation so future upgrades — including higher transaction throughput — could actually be built.