Chain Info

ClawWallet is deployed on Abstract Mainnet, a zkSync ERA-based L2 chain.

Network Details

Property	Value
Network Name	Abstract Mainnet
Chain ID	2741
Currency	ETH
VM	zkSync ERA (zkEVM)
Consensus	zkRollup on Ethereum L1
Block Time	~1-2 seconds
Finality	Soft finality on L2, hard finality after L1 proof

RPC Endpoints

Provider	URL
Official RPC	https://api.mainnet.abs.xyz

Block Explorer

Explorer	URL
AbsScan	https://abscan.org

Bridge

Bridge	URL
Abstract Portal	https://portal.abs.xyz/bridge

Adding Abstract to MetaMask

Manual Setup

1. Open MetaMask → Settings → Networks → Add Network
2. Fill in:

Field	Value
Network Name	Abstract Mainnet
RPC URL	https://api.mainnet.abs.xyz
Chain ID	2741
Currency Symbol	ETH
Block Explorer	https://abscan.org

Programmatic (ethers.js v6)

import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://api.mainnet.abs.xyz');

// Verify connection
const network = await provider.getNetwork();
console.log('Chain ID:', network.chainId); // 2741n
console.log('Name:', network.name);

const blockNumber = await provider.getBlockNumber();
console.log('Latest block:', blockNumber);

Programmatic (viem)

import { createPublicClient, http, defineChain } from 'viem';

export const abstractMainnet = defineChain({
  id: 2741,
  name: 'Abstract Mainnet',
  nativeCurrency: { name: 'Ether', symbol: 'ETH', decimals: 18 },
  rpcUrls: {
    default: { http: ['https://api.mainnet.abs.xyz'] },
  },
  blockExplorers: {
    default: { name: 'AbsScan', url: 'https://abscan.org' },
  },
});

const client = createPublicClient({
  chain: abstractMainnet,
  transport: http(),
});

const blockNumber = await client.getBlockNumber();
console.log('Latest block:', blockNumber);

Wagmi / RainbowKit

import { defineChain } from 'viem';

export const abstractMainnet = defineChain({
  id: 2741,
  name: 'Abstract Mainnet',
  nativeCurrency: { name: 'Ether', symbol: 'ETH', decimals: 18 },
  rpcUrls: {
    default: { http: ['https://api.mainnet.abs.xyz'] },
  },
  blockExplorers: {
    default: { name: 'AbsScan', url: 'https://abscan.org' },
  },
});

// Use in wagmi config
import { createConfig, http } from 'wagmi';

const config = createConfig({
  chains: [abstractMainnet],
  transports: {
    [abstractMainnet.id]: http(),
  },
});

zkSync ERA Compatibility

Abstract Chain is built on zkSync ERA, which has some differences from standard EVM chains:

Key Differences

Feature	EVM	zkSync ERA (Abstract)
Account Model	EOA + Smart Contracts	All accounts are smart contracts
Paymasters	ERC-4337 bundlers	Native protocol support
Contract Deployment	CREATE / CREATE2	ContractDeployer system contract
Bytecode	EVM bytecode	zkEVM bytecode (compiled via zksolc)
Gas	gasleft() works normally	Different gas model
Precompiles	Standard EVM	Different set of precompiles

What This Means for ClawWallet

• ClawWalletFactory uses DEPLOYER_SYSTEM_CONTRACT.create2Account() instead of CREATE2
• Wallet bytecode must be compiled with zksolc (not standard solc)
• The factory stores a walletBytecodeHash (from zksolc artifact) for deployment
• All wallets are natively AA-compatible (AccountAbstractionVersion.Version1)
• Paymasters work at the protocol level — no bundler infrastructure needed

Compiling for zkSync ERA

# hardhat.config.ts must include:
zksolc: {
  version: "1.5.x",
  settings: {
    enableEraVMExtensions: true,  // Required for system contract calls
  },
}

Gas & Fees

Abstract Chain uses zkSync ERA's gas model:

• Gas token: ETH
• Gas pricing: L2 gas + L1 data posting costs
• Paymaster support: Native (ClawPaymaster leverages this)
• Typical costs: Significantly cheaper than Ethereum L1

Estimating Gas

// Standard ethers.js estimation works
const gasEstimate = await provider.estimateGas({
  from: walletAddress,
  to: targetAddress,
  data: calldata,
  value: 0n,
});

console.log('Estimated gas:', gasEstimate.toString());

Useful Links

Resource	URL
Abstract Chain Website	https://abs.xyz
Abstract Portal	https://portal.abs.xyz
AbsScan Explorer	https://abscan.org
Abstract Bridge	https://portal.abs.xyz/bridge
zkSync ERA Docs	https://docs.zksync.io
ClawWallet GitHub	https://github.com/0xChitlin/clawwallet