Ethereum co-founder Vitalik Buterin has placed privacy protection at the core of the execution layer agenda, focusing on the practical implementation of cryptographic solutions such as garbled circuits. The goal is not to create closed privacy systems, but to build privacy mechanisms that are auditable, verifiable, and seamlessly integrated into existing development processes, allowing developers to achieve selective data disclosure without switching toolchains.
This direction aligns closely with the cryptographic computing architecture advocated by the COTI project. Through garbled circuits, contract participants can disclose necessary information proactively in compliance scenarios such as regulatory audits and anti-money laundering (AML), without exposing counterparties or business strategies. This “privacy but accountable” model, distinct from traditional privacy coins or off-chain mixers, is seen as a key prerequisite for institutional-level applications.
Despite the clear technological prospects, challenges remain. Currently, the execution efficiency of garbled circuits is still lower than that of standard EVM paths, and actual throughput is significantly affected by contract complexity and load. Additionally, developers' understanding of privacy tools, the standardization of audit processes, and the improvement of supporting monitoring systems remain core bottlenecks in the promotion process. The regulatory attitudes towards privacy technology in different jurisdictions are also evolving and need to adapt dynamically.
Vitalik Buterin has emphasized, “Privacy is not a feature, but a basic hygiene.” This philosophy is driving Ethereum to reconstruct privacy capabilities from the ground up, making it a default rather than an optional component, laying the technical foundation for the next generation of compliant decentralized applications.