C++ is a general-purpose programming language that has object-oriented and generic programming features Of the blockchain software projects, Bitcoin, Ethereum and ripple are written in C++ and Go. Other platforms that are also employing the C++ programming language include the Linux Foundation’s Hyperledger Project and SONM, also known as the Supercomputer Organized by Network Mining. The most important reason is that the original Satoshi codebase was written in C++. A system like Bitcoin has extremely strong requirements about consistency in behaviour: all nodes on the network must accept and reject the exact same blocks, or we risk a fork. The first choice to avoid bugs that risk introducing inconsistency is to not rewrite the code from scratch.


Although all programming languages have flaws, and C++ is no exception, there are various reasons that make it an appropriate choice. An easily-overlooked one is that it provides very tight control over memory usage. Many modern languages (especially those that rely on garbage collection) make it hard if not impossible to reason about tight bounds of memory usage. Since Bitcoin Core is a security-critical application that is directly exposed to the Internet, it is nontrivial to guarantee that there is no way to trigger it to allocate large amounts of memory, thrashing the machine's swap space, or worse, killing the process.

This is in addition to a good balance between high-level where desired but also many avenues for performance optimization. Performance may be more important than is immediately obvious, as the convergence of the network relies on quick validation and propagation of blocks. If blocks take too long to validate compared to their creation frequency, economic factors start to unfairly advantage larger/faster miners. Under extreme conditions, if blocks would take ~minutes to validate, the network may fail to converge at all, as nodes simply don't hear about blocks in time anymore.


Being a highly portable language for multi-device, multi-platform app development is powerful, efficient and fast, and reusable, enabling the use of written code more than once. It provides performance, memory efficiency, and complete control. It is also an object-oriented program that includes classes, inheritance, polymorphism, data abstraction, and encapsulation. As well as programming at a high level, you can also program at a low level in the same language too.

Scala Blockchain develops and delivers blockchain solutions for a multi-faceted business environment in C++ programming language; with a strong team of C++ experts and tech personal we strive to offer the best in class solutions and services.