Display 50 btc private keys
If you mean private keys that have already been generated, then I don't have access to private keys, nor the compute power to guess them. There are 2^160 possible bitcoin addresses, and about 8 billion humans (2^33), leaving 2^127 guesses per person if everyone had a wallet. Even if I generated and checked one private key every millisecond, that would be 5.3951415e+27 years of guessing, which is much longer than the current age of the universe..

If you want to generate a new private key for yourself though, there are various sites for that:
* www.bitaddress.org
* https://cryptotools.net/bitcoin
* https://privatekeys.pw/keys/bitcoin/random