Examine a script (hex-encoded) and extract an address.
    Return the address on success
    Return None on error

def btc_script_hex_to_address( script_hex, segwit=None ):
    """
    Examine a script (hex-encoded) and extract an address.
    Return the address on success
    Return None on error
    """
    # TODO: make this support more than bitcoin-like scripts
    if script_hex.startswith("76a914") and script_hex.endswith("88ac") and len(script_hex) == 50:
        # p2pkh script
        hash160_bin = binascii.unhexlify(script_hex[6:-4])
        return bin_hash160_to_address(hash160_bin, version_byte=version_byte)

    elif script_hex.startswith("a914") and script_hex.endswith("87") and len(script_hex) == 46:
        # p2sh script
        hash160_bin = binascii.unhexlify(script_hex[4:-2])
        return bin_hash160_to_address(hash160_bin, version_byte=multisig_version_byte)

    elif script_hex.startswith('0014') and len(script_hex) == 44:
        # p2wpkh script (bech32 address)
        hash160_bin = binascii.unhexlify(script_hex[4:])
        return segwit_addr_encode(hash160_bin) 

    elif script_hex.startswith('0020') and len(script_hex) == 68:
        # p2wsh script (bech32 address)
        sha256_bin = binascii.unhexlify(script_hex[4:])
        return segwit_addr_encode(sha256_bin)

    return None