Yes, it can be absolutely copied, and has been!  Bitcoin's innovation is decentralization, not some magic code that can't be replicated.  There are thousands of cryptocurrencies out there, all inspired by Bitcoin and many directly copying its core technology.  These are called altcoins, and while they might not be exactly the same, they prove that Bitcoin itself isn't some unique, uncopyable invention.

But at least you accepted that Bitcoin is a product (invention) and not a discovery as you claimed before.