Setup Cosmos Libraries

import { useMemo } from 'react';
import { useClient, useAccount } from '@getpara/react-native-wallet';
import { ParaAminoSigner } from '@getpara/cosmjs-v0-integration';
import { makeSignDoc } from '@cosmjs/amino';

const CHAIN_ID = 'cosmoshub-4';

export function useParaCosmosAmino() {
  const para = useClient();
  const { isConnected } = useAccount();

  const aminoSigner = useMemo(() => {
    if (!para || !isConnected) return null;
    return new ParaAminoSigner(para, 'cosmos');
  }, [para, isConnected]);

  const address = aminoSigner?.address;

  const signMessage = async (message: string) => {
    if (!aminoSigner || !address) return;

    const signDoc = makeSignDoc(
      [{ type: 'sign/MsgSignData', value: { signer: address, data: btoa(message) } }],
      { amount: [], gas: '0' },
      CHAIN_ID,
      '',
      0,
      0
    );

    const { signature } = await aminoSigner.signAmino(address, signDoc);
    return signature.signature;
  };

  return { aminoSigner, address, signMessage, isLoading: !para };
}