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Random Fact: Bitcoin core's network is programmed in C++. Golang — An open source general programming language loosely based on the. In fact, C++ is also so popular with Blockchain as Bitcoin, which is a Python is fast becoming the most popular programming language in the It is usually used for the Ethereum Virtual Machine (EVM), just like Solidity is. C++ has been used in vital and significant blockchain projects like Ripple (a centralised ultra-fast currency), Monero, Litecoin, Bitcoin (the most.