เชน

<RainbowKitProvider initialChain={1}>

<RainbowKitProvider initialChain={mainnet}>

import { mainnet, optimism } from 'wagmi/chains';

const config = getDefaultConfig({
  chains: [
    {
      ...mainnet,
      iconBackground: '#000',
      iconUrl: 'https://example.com/icons/ethereum.png',
    },
    {
      ...optimism,
      iconBackground: '#ff0000',
      iconUrl: 'https://example.com/icons/optimism.png',
    },
  ],
});

import { mainnet, optimism } from 'wagmi/chains';
import { Chain } from '@rainbow-me/rainbowkit';

const chains: readonly [Chain, ...Chain[]] = [
  {
    ...mainnet,
    iconBackground: '#000',
    iconUrl: 'https://example.com/icons/ethereum.png',
  },
  {
    ...optimism,
    iconBackground: '#ff0000',
    iconUrl: 'https://example.com/icons/optimism.png',
  },
];

const config = createConfig({
  chains,
});