ConsenSys-backed Layer 2 network, Linea, has joined StarkWare in condemning Matter Labs' attempt to trademark the term "zero-knowledge" (ZK) in nine countries. Matter Labs, the company behind zkSync, is seeking exclusive control over this foundational cryptographic concept, causing industry-wide outrage. StarkWare, a software company that develops ZK-proof technology, has called for community action against Matter Labs' "oppressive behavior".

Linea supports this stance, stating that using a legal framework to monopolize a branch of cryptography integral to building permissionless and decentralized L2 execution environments contradicts Ethereum’s ethos. They further highlighted the collaborative nature of Ethereum’s development and how the attempt to claim ownership over ZK technology hinders progress towards a more inclusive and censorship-resistant network.

In response, Matter Labs clarified that their move aims to ensure the term "ZK" can be used freely in the context of their projects like "ZK Sync" and "ZK Stack," using trademarks as the only available legal tool for such protection. They also addressed the misconception that trademarks grant exclusive ownership over a word or phrase, adding that rights only extend to specific goods or services.