Fast, customizable EVM implementation in Rust.

• up to 2x faster than revm from a tighter interpreter, static dispatch tables, and cheaper instruction plumbing.
• Built for custom EVMs: extend specs, opcodes, gas schedules, transactions, precompiles, environment data, and inspectors without reshaping the core.
• Clean extension boundaries: typed configuration keeps fork logic, transaction handling, host state, and opcode definitions separate while compiling down to a small execution path.

enum CustomSpecId {
    Custom,
    // ...
}

struct CustomTypes;

impl EvmTypes for CustomTypes {
    // ...
}

#[instruction(EvmTypes = CustomTypes)]
fn l1_blocknumber(cx: _) -> out {
    *out = Word::from(cx.state.host().block_env().ext.l1_block_number);
}

fn main() -> Result<()> {
    let spec_id = CustomSpecId::Custom;
    let mut evm = Evm::<CustomTypes>::new(spec_id, ..);
    let tx = CustomTx { .. };
    let executed = evm.transact(&tx)?;
    let result = executed.commit();
    // ...
    Ok(())
}

See crates/evm2/examples/custom_evm for the complete version.

cargo bench -p evm2 --bench evm
EVM2_BENCH_REVM=1 cargo bench -p evm2 --bench evm

cargo fmt --all
cargo cl
cargo nextest run

evm2 always aims to stay up-to-date with the latest stable Rust release.

The Minimum Supported Rust Version (MSRV) may be updated at any time, so we can take advantage of new features and improvements in Rust.