const address = await fetchAddress()
// returns the m/44'/60'/0'/0/0 address from the active wallet
const address = await fetchAddress(10)
// returns the m/44'/60'/0'/0/10 address from the wallet
const address = await fetchAddress([HARDENED_OFFSET + 84, HARDENED_OFFSET, HARDENED_OFFSET, 0, 0])
// returns the m/84'/0'/0'/0'/0/0 address (the first btc addr)
example: