code: def make_multisig_segwit_address_from_witness_script(script):
      
      script_hash = hashing.bin_sha256(script.decode('hex')).encode('hex')
      scriptsig_script = '0020' + script_hash
      addr = btc_make_p2sh_address(scriptsig_script)
      return addr
docs: multisig witness script (p2sh-p2wsh) to address