> For the complete documentation index, see [llms.txt](https://docs.nexus.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nexus.xyz/network/building-on-nexus/deploying-on-nexusevm.md).

# Deploying on NexusEVM

NexusEVM is fully EVM-compatible. 

#### Deployment with Hardhat

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

Verify deployment:

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

#### Deployment with Foundry

See [Developer Environment Setup](https://docs.nexus.xyz/network/building-on-nexus/developer-environment-setup) for configuration.

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

With constructor arguments:

```bash
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. 


---

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