fetch bank data from tendermint rpc.js

const bech = require('bech32');
const { Tendermint34Client } = require('@cosmjs/tendermint-rpc'); 
const { setupBankExtension } = require('@cosmjs/stargate');

// create a rpc client to fetch data from a blockchain
const  tendermintClient = QueryClient.withExtensions( 
  (await Tendermint34Client.connect("rpc-url")),
  setupBankExtension );

// use this to get the balances 

const balances = await tendermintClient.client.bank.allBalances('cosmos...');

// to change from one address to another you could use those functions

const hexToBech = (str, prefix) => {
    const words = bech.bech32.toWords(Buffer.from(str.replace(/0x/, ''), 'hex')); 
    return bech.bech32.encode(prefix, words);
};
const bechToHex = (str = '') => { 
  const y = bech.bech32.decode(str); 
  return Buffer.from(bech.bech32.fromWords(y.words)).toString('hex'); 
};
// this gives you an eth like address
bechToHex('cosmos.....');
// this will convert your cosmos address to osmosis 
hexToBech(bechToHex('cosmos.....'), 'osmo');
// this will convert your cosmos address to akash 
hexToBech(bechToHex('cosmos.....'), 'akash');