Auction Chain is an application specific blockchain system made using NodeJS and React. It's a proprietary soloution and is built from the ground up. It uses modern-day blockchain principles like BIP39 and PoW (Proof of Work)
The entire project was written using NodeJs, javascript and NPM for package management. You can view the code on github, as a running instance on heroku or by running the desktop verison from the github repository on Windows. Versions can be compiled for Linux and MacOs.
Reach out to me over Linkedin for a chat or view some of my other work on Github.