Aztec is an Ethereum Layer 2 (L2) network that uses zero-knowledge rollup technology to enable private transactions and smart contracts, allowing developers to build applications where some data stays encrypted while other data remains public. Unlike traditional blockchains where every transaction is visible to everyone, Aztec introduces a programmable privacy model that gives developers granular control over what information gets revealed and what stays hidden.

What Makes Aztec's Architecture Different From Other Privacy Solutions?

Aztec's core innovation is its hybrid state model, which sets it apart from other privacy-focused blockchains. Rather than forcing developers to choose between complete transparency or complete opacity, Aztec allows applications to store data in two ways simultaneously. Some data can live in a private state, encrypted and visible only to authorized parties, while other data can exist in a public state, similar to traditional smart contracts.

This dual-state approach addresses a fundamental limitation of Ethereum and similar public blockchains: full transaction transparency. Aztec solves this by using zero-knowledge rollups, a type of Layer 2 scaling solution that batches transactions together and submits a cryptographic proof (called a zk-SNARK) to Ethereum for verification. The key advantage is that Ethereum can cryptographically confirm transactions are correct without seeing the sensitive details. This creates what Aztec calls "verifiable execution," where privacy and security coexist.

How Do Developers Actually Build on Aztec?

To make building on Aztec practical, the network provides developers with a custom programming language called Noir. This language is specifically designed to work with Aztec's selective transparency model, allowing developers to write code that automatically handles the distinction between private and public data. Developers can use Noir to create applications that leverage Aztec's hybrid state model without needing to become cryptography experts.

Steps to Understanding Aztec's Role in the Ethereum Ecosystem

• Privacy-First Scaling: Aztec functions as an Ethereum L2 zero-knowledge rollup designed to make private transactions and computations the default behavior, directly addressing the transparency problem that public blockchains face.
• Selective Data Visibility: The network uniquely supports both private and public state within a single application, giving developers granular control over which information gets encrypted and which remains visible on-chain.
• Verifiable Execution: Aztec uses cryptographic proofs to ensure transactions are correct without revealing sensitive details, creating a trust model where privacy and security reinforce each other rather than compete.

What Use Cases Does Aztec Enable?

The programmable privacy model opens doors to applications that were difficult or impossible to build on transparent blockchains. Aztec's value proposition includes confidential DeFi protocols where trading positions and account balances remain private, private identity proofs that verify information without exposing underlying data, and institutional applications that require data secrecy for regulatory or competitive reasons. These use cases represent a significant departure from the "move fast and break things" ethos of early crypto, instead focusing on real-world applications where privacy is a feature, not a bug.

How Does the AZTEC Token Work?

The AZTEC token is an ERC-20 token on Ethereum Layer 1 with a genesis supply of 10.35 billion tokens. The token serves multiple functions within the Aztec ecosystem. Users can stake AZTEC to run sequencers, which are validators that propose blocks and earn emissions in return. Token holders also participate in governance by voting on protocol upgrades, giving the community a voice in how Aztec evolves.

Additionally, AZTEC can be bridged to the Aztec network itself, where it functions as the native currency for paying gas fees. This creates an internal demand sink within the ecosystem, as users must acquire AZTEC to pay for transactions on the network. The combination of staking, governance, and fee payment creates multiple economic incentives for holding and using the token.

Aztec represents a fundamental shift in how developers approach privacy on Ethereum. Rather than treating privacy as an afterthought or a feature bolted onto existing infrastructure, Aztec embeds it as a native, programmable capability. The question now facing the ecosystem is how developers will leverage this dual-state model to create the next generation of confidential applications that were previously impossible to build on public blockchains.