Deploying on NexusEVM

NexusEVM is fully EVM-compatible.

Deployment with Hardhat

npx hardhat run scripts/deploy.ts --network nexusMainnet

Verify deployment:

cast code 0xYOUR_CONTRACT_ADDRESS --rpc-url https://mainnet.rpc.nexus.xyz

Deployment with Foundry

See Developer Environment Setup for configuration.

forge create src/MyContract.sol:MyContract \
  --rpc-url nexus_mainnet \
  --chain-id 3946 \
  --private-key $PRIVATE_KEY

With constructor arguments:

forge create src/MyContract.sol:MyContract \
  --rpc-url nexus_mainnet \
  --chain-id 3946 \
  --private-key $PRIVATE_KEY \
  --constructor-args "arg1" 42

Gas

Gas metering follows Ethereum's model. All opcodes cost the same gas as on Ethereum. Gas limits are enforced — out-of-gas transactions revert normally. Gas is paid in NEX.

Differences from Ethereum

Difference	Detail
Block time	1 second (vs. Ethereum's 12s). block.timestamp increments faster — time-based logic works, but blocks-as-time proxies behave differently.
Finality	Single-slot. No reorgs, no uncle blocks. One confirmation is sufficient. block.number is always authoritative.
Transaction ordering	CometBFT default mempool (FIFO). No gas auction, no MEV competition.
Native currency	NEX. msg.value transfers NEX.
ENS	Not available on NexusEVM.

Composability with the Exchange

When the Exchange launches, NexusEVM contracts will be able to call into NexusCore — placing orders, reading market data, and managing margin atomically within a single EVM transaction.