Zama
AuditedVerifiedTrendingZama is a Fully Homomorphic Encryption (FHE) confidentiality layer for Ethereum that lets users wrap ordinary ERC-20s into confidential ERC-7984 tokens whose balances and transfer amounts stay encrypted end-to-end while reserves remain publicly verifiable.
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The Problem
Public blockchains broadcast every balance and every transfer amount. That makes payroll, treasury operations, RWA distributions and large trades unworkable onchain — institutions cannot expose counterparty positions, and traders leak their intent to MEV searchers before settlement.
The Solution
Zama wraps ordinary ERC-20s into ERC-7984 confidential tokens whose balances and transfer amounts are encrypted end-to-end with Fully Homomorphic Encryption. Contracts compute directly on the ciphertext, and decryption is gated by an onchain ACL and executed only by a 9-of-13 threshold MPC committee.
Why it Matters
Zama built TFHE-rs and FHEVM, the reference implementations the rest of the FHE-on-blockchain field builds against, and is the first production deployment of robust threshold-MPC FHE on a public chain. Confidentiality is composable — any EVM contract can hold encrypted state — and wrapper reserves stay publicly auditable even though user balances do not.
Protocol Metrics
Related Research
View allFrequently asked questions about Zama
What is Zama?+
Zama is a Privacy protocol operating on Ethereum. Zama is a Fully Homomorphic Encryption (FHE) confidentiality layer for Ethereum that lets users wrap ordinary ERC-20s into confidential ERC-7984 tokens whose balances and transfer amounts stay encrypted end-to-end while reserves remain publicly verifiable.
How does Zama work?+
Zama wraps ordinary ERC-20s into ERC-7984 confidential tokens whose balances and transfer amounts are encrypted end-to-end with Fully Homomorphic Encryption. Contracts compute directly on the ciphertext, and decryption is gated by an onchain ACL and executed only by a 9-of-13 threshold MPC committee.
Is Zama safe?+
DeFi Sentinel rates Zama A with a safety score of 76/100, indicating low-to-moderate risk. The score reflects five risk dimensions: smart contract & technical risk, economic design & market risk, governance & centralization, sustainability & competitive position, and reputation & social trust. Zama has 5 audits on record. DeFi Sentinel's analysis flagged 1 high, 5 medium, 4 low risk alerts across Smart Contract & Technical Risk, Economic Design & Market Risk, Governance & Centralization and Sustainability & Competitive Position. As with all DeFi protocols, residual risk remains and users should review the full risk breakdown before depositing.
What is the safety score of Zama?+
Zama has a DeFi Sentinel safety score of 76/100 (rating A), last updated September 16, 2026. The score is computed across smart contract & technical risk (30%), economic design & market risk (25%), governance & centralization (20%), sustainability & competitive position (15%), and reputation & social trust (10%).
Which chains does Zama support?+
Zama is deployed on Ethereum.
Has Zama been audited?+
Yes. Zama has 5 audit reports on record from firms including Trail of Bits, OpenZeppelin, Zenith. Audit reports and dates are linked under the Resources tab on this page.