
The Race to Build the Private Ethereum
David Hoffman (Bankless) interviews Zach Williamson (Aztec) about the competition to become the "private Ethereum." Zach asserts that Aztec is the only smart-contract chain without backdoors or viewing keys – unlike many rivals that rely on centralized provers or compliance hooks.
Technical Challenges & Trade-offs- Most projects take shortcuts: they introduce third parties to verify transactions, enabling censorship and surveillance.
- Aztec takes the harder path: full decentralization and formal verification (Stage-2 rollup from day one).
- AI-driven attacks make every public transaction exploitable – data can be analyzed and abused.
- Aztec enables applications impossible on public chains: e.g., private KYC (ZK Passport), private lending, or tokenization of real-world assets with compliance.
- Current tools: zk.money (private transfers), Nolo (wallet), Nyx (private DeFi/yield).
- Aztec Tiara upgrade (2026): halved proof times, soft finality in 6–12 seconds, more formal verification.
- 2027 goals: real-time proving, 5-minute hard finality (with tipping option), cheaper provers.
- New users: try zk.money or visit aztec.network.
- Institutions: Aztec is a neutral network – they can add viewing keys at the app layer if desired.
“Privacy wins not as a feature, but as a requirement for applications that cannot exist otherwise.” – Zach Williamson





