TechFlow news: The company behind Ethereum scaling solution Polygon has published a blog post alleging that Matter Labs, the team behind zkSync rollup, copied portions of Polygon's open-source code without proper attribution.
Blockchain projects often release their code under open-source software licenses, meaning external developers can read, copy, and in some cases contribute to a company’s original codebase. However, community norms and most open-source licenses typically require third-party developers to provide attribution when using code derived from other sources.
Polygon stated that Matter Labs recently released a proving system called Boojum, which includes source code directly copied and pasted from Polygon’s "Plonky2" software library. Polygon said, "The code lacks original copyright notices and clear attribution to the original authors." The team emphasized that copying and pasting source code without attribution—and making misleading claims about the original work—violates the spirit of open source and harms the ecosystem.
