Supported Networks

Deployments

Network	Virtual Chain ID	Contract (Proxy)	App URL
Ethereum Sepolia (testnet)	43611	0x8D7E5c312eFeb54124C4966005F923D3A3b0E04D	sepolia.nullmask.io
Hardhat (local development)	43613	0xF9884b1ceF2AadFcFec536191679ee4240a8C6c9	localhost
Ethereum Mainnet	43615	0x88888888Eb71E1D68aD0C471C6893EdEEa00B026	app.nullmask.io
MegaETH	43616	0x8888888838DFf5A522118E461a2B926bB8Bfb4A2	megaeth.nullmask.io
Arbitrum One	43617	0x8888888838DFf5A522118E461a2B926bB8Bfb4A2	Coming soon
Base	43618	0x8888888838DFf5A522118E461a2B926bB8Bfb4A2	base.nullmask.io
BSC	43619	0x8888888838DFf5A522118E461a2B926bB8Bfb4A2	bsc.nullmask.io

Virtual Chain IDs

Nullmask uses virtual chain IDs to distinguish its network from the underlying chain. These IDs are used in:

• The wallet's network configuration

• Transaction nullifier computation

• The ZK circuit's public inputs

The virtual chain ID is set as an immutable in the Nullmask contract constructor and verified during proof validation.

Deploying to a New Network

To deploy Nullmask on a new EVM chain:

cd contracts
npx hardhat run scripts/deploy-nullmask.ts --network <network>

The deployment script deploys in order:

1. ZKTranscriptLib (shared library)

2. ShieldedTransferVerifier, ShieldedWithdrawalVerifier, ShieldedSwapVerifier (with library linking)

3. AdminUpgradeController (admin = deployer)

4. Poseidon2T4Unrolled (hash library)

5. Nullmask implementation (with Poseidon2T4Unrolled library linking)

6. NullmaskProxy (ERC1967Proxy pointing to implementation)

7. Call initialize() on proxy

The proxy address is the canonical Nullmask address for all interactions.