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Public blockchains have a fundamental transparency problem — their open verification model makes them unsuitable for handling sensitive data, such as financial assets or personal identity. The Zama (ZAMA) open-source project addresses this limitation through its Confidential Blockchain Protocol, which adds a programmable privacy layer to web3. The protocol uses Fully Homomorphic Encryption (FHE) to enable confidential smart contracts that run computations on encrypted data without ever exposing the underlying values to validators or the public. Transaction inputs and states stay private, while the network still verifies everything publicly.
Developers can build confidential applications through Zama’s FHEVM, a Solidity library that brings encrypted data types into standard smart contract development. Behind the scenes, a multi-party computation (MPC) key management service (KMS) manages cryptographic keys, and zero-knowledge (ZK) proofs validate user inputs before processing. This lets Zama support composable, confidential apps on existing Layer 1 and Layer 2 chains without touching their networks’ trustless validation mechanisms.
Key Takeaways:
Zama (ZAMA) is a modular confidentiality layer for blockchains that enables confidential computing and smart contracts by leveraging FHE encryption technology.
Zama's privacy layer features a high degree of cross-chain compatibility, and can be integrated into any Layer 1 or Layer 2 network.
The platform's native cryptocurrency, ZAMA, is primarily used for staking and to pay the protocol fees for the use of encrypted computational resources.