Balancer Contracts are Open-Sourced

Mike McDonald
Balancer Protocol
Published in
1 min readMar 13, 2020


After several months of heavy development we are excited to announce Balancer core contracts are now open-sourced at:

The bronze release deliberately favors clarity, security, and conservativeness over any gas optimizations. For more details on the math approximations and solidity implementation, check out the docs at:

We have worked with Trail of Bits throughout the development process including a spot check, mini-audit, full-audit, and recheck. The full audit report can be found here.

Fuzzing and symbolic execution tools were used to push the math to the extreme and informed several design decisions and parameters within the contracts.

A closed beta on mainnet will begin shortly with a full launch planned at the end of March. If you are interested in learning more or getting involved, please join our Discord channel: