Open-source code is the backbone for Bitcoin, Ethereum and the systems behind many other cryptocurrencies. The idea of “open source” long predates cryptocurrency.

The open-source Baseline Protocol code allowing private systems to be built on the Ethereum public blockchain has now been published to GitHub, as of March 19.

Developers have directly traded bitcoin for ethereum using an in-progress technology that aims to replace cryptocurrency exchanges with code.

Polygon makes its Chain Development Kit open-source, allowing developers to build layer 2 scaling protocols powered by ZK-proof technology.