Chuỗi tùy chỉnh

import {
  RainbowKitProvider,
  getDefaultConfig,
  Chain,
} from '@rainbow-me/rainbowkit';
import { WagmiProvider } from 'wagmi';
import {
  QueryClientProvider,
  QueryClient,
} from "@tanstack/react-query";

const avalanche = {
  id: 43_114,
  name: 'Avalanche',
  iconUrl: 'https://s2.coinmarketcap.com/static/img/coins/64x64/5805.png',
  iconBackground: '#fff',
  nativeCurrency: { name: 'Avalanche', symbol: 'AVAX', decimals: 18 },
  rpcUrls: {
    default: { http: ['https://api.avax.network/ext/bc/C/rpc'] },
  },
  blockExplorers: {
    default: { name: 'SnowTrace', url: 'https://snowtrace.io' },
  },
  contracts: {
    multicall3: {
      address: '0xca11bde05977b3631167028862be2a173976ca11',
      blockCreated: 11_907_934,
    },
  },
} as const satisfies Chain;

const config = getDefaultConfig({
  appName: 'My RainbowKit App',
  projectId: 'YOUR_PROJECT_ID',
  chains: [avalanche],
});

const queryClient = new QueryClient();

const App = () => {
  return (
    <WagmiProvider config={config}>
      <QueryClientProvider client={queryClient}>
        <RainbowKitProvider>
          {/* Your App */}
        </RainbowKitProvider>
      </QueryClientProvider>
    </WagmiProvider>
  );
};