ZKsync is a family of ZK-rollup products built by Matter Labs — one of the earliest ZK-rollup teams, with ZKsync Lite launching in 2020 (payment-focused, non-EVM) and ZKsync Era (EVM-compatible) launching in 2023. ZKsync Era is classified as a Type 4 zkEVM — it compiles Solidity/Vyper source code to a ZKsync-native VM bytecode (zkEVM bytecode) rather than proving the EVM bytecode directly, enabling higher throughput and lower proving costs at the expense of some compatibility edge cases. ZKsync’s signature innovations include native account abstraction (every account can be a smart contract — no separate EOA/contract distinction) and the ZK Stack — an open-source framework for launching custom ZK chains (hyperchains) that are interoperable with ZKsync Era via decentralized ZK proof-based bridges. The ZK token serves as governance and utility within the ZKsync ecosystem.
How It Works
| Component | Role |
|---|---|
| ZKsync Era | EVM-compatible L2 mainchain (Type 4 zkEVM) for DeFi and applications |
| ZKsync Lite | Original payment-focused L2 (predates Era; limited to transfers and DEX swaps) |
| ZK Stack | Open-source framework for deploying custom ZK chains (hyperchains) |
| Hyperchains | Independent ZK chains built on ZK Stack, bridgeable to ZKsync Era via ZK proofs |
| Native AA | Account abstraction built into protocol layer — every wallet can be programmable |
Native Account Abstraction (ZKsync’s differentiator):
- Unlike Ethereum where EOAs (externally owned accounts) and smart contracts are different account types
- In ZKsync, all accounts can have custom validation logic — enabling: gasless transactions (paymasters), batch transactions, custom signature schemes (biometric wallets), session keys, and social recovery — all natively, without EIP-4337 workarounds
Key Features
| Feature | Details |
|---|---|
| Native account abstraction | All accounts are smart contracts — enables paymasters, social recovery, session keys |
| ZK Stack | Open-source hyperchain framework for launching custom ZK L2s/L3s |
| Hyperchain interoperability | ZK proof-based trust-minimized cross-chain messaging between ZK Stack chains |
| Type 4 zkEVM | Source-level Solidity compatibility with custom bytecode for improved proving performance |
| Boojum prover | Matter Labs’ own custom ZK proof system — replaced older SNARK system in 2023 |
ZK Stack Hyperchains (Notable)
| Chain | Focus |
|---|---|
| Cronos zkEVM | Crypto.com’s L2 built on ZK Stack |
| Sophon | Consumer app chain (ZK Stack-based) |
| Abstract | Consumer crypto chain for NFTs/games |
| Treasure Chain | Gaming ecosystem L2 |
History
- 2020: ZKsync Lite mainnet — payment-focused ZK-rollup; first major ZK-rollup with real users
- 2022: ZKsync Era announced; “zkEVM” race begins with Matter Labs, Polygon, Scroll competing
- 2023 (Mar): ZKsync Era mainnet alpha launches — EVM-compatible ZK-rollup live on Ethereum
- 2023 (Jun): ZK Stack announced — open framework for custom ZK chain deployment
- 2023 (Nov): Boojum prover upgrade — Matter Labs’ custom proving system replacing prior SNARK system for improved throughput
- 2024 (Jun): ZK token TGE — large airdrop to ZKsync Era and ZKsync Lite users; Sybil controversy emerges
- 2024 (Q3-Q4): ZK Stack hyperchains begin deploying mainnet; interoperability protocol development
- 2025: Elastic Chain — ZKsync’s vision for a unified network of ZK Stack chains with seamless cross-chain UX
Common Misconceptions
“ZKsync Era is not EVM-compatible.”
ZKsync Era supports Solidity and Vyper contracts with minimal modifications needed — most contracts deploy with standard tooling. Some edge cases exist (certain precompiles, cryptographic operations) where compilation behavior differs, but routine DeFi/NFT contracts work essentially unchanged.
“Hyperchains are independent from Ethereum.”
ZK Stack hyperchains settle their proofs ultimately through ZKsync Era and then to Ethereum L1 — they inherit Ethereum’s security via ZK proof chain, not via direct Ethereum posting.
Criticisms
- ZK token airdrop Sybil controversy: The June 2024 ZK airdrop was criticized heavily — $3.6B worth of ZK tokens distributed, but Sybil filter was perceived as too aggressive (legitimate users excluded) while many obvious Sybil wallets received tokens; Matter Labs’ on-chain evidence for filtering was disputed by community
- Type 4 incompatibility cases: Unlike Type 1/2 zkEVMs, some contracts require minor modification for ZKsync Era — ecosystem tooling has improved but not every Ethereum contract deploys cleanly
- Ecosystem fragmentation risk: ZK Stack’s hyperchain model may fragment liquidity across many independent chains — the “Elastic Chain” vision addresses this but requires substantial coordination
- Competition: Faces competition from OP Stack (Arbitrum/Optimism) hyperchains with deeper established DeFi liquidity, and from other zkEVM rollups on technical grounds
Social Media Sentiment
ZKsync was one of the most anticipated L2 airdrops — the ZK token TGE generated enormous engagement followed immediately by widespread disappointment and anger over the Sybil controversy. Despite this, ZKsync Era maintains an active developer community and growing hyperchain ecosystem. Sentiment is mixed to neutral in 2024-2025.
Last updated: 2026-04
Related Terms
Sources
- ZKsync Era Documentation — docs.zksync.io (2024). Matter Labs’ official technical documentation — covering ZKsync Era architecture, native account abstraction, ZK Stack deployment, and hyperchain design.
- “Introducing the ZK Stack” — Matter Labs Blog (June 2023). Technical post announcing ZK Stack — the framework for launching custom ZK chains (hyperchains) interoperable via ZK proof-based bridges.
- “ZK Airdrop Distribution Analysis” — Dune Analytics (June 2024). On-chain analysis of the ZK token distribution — claimed Sybil filtering methodology, unique recipient wallets, and post-airdrop trading patterns.
- “Boojum: ZKsync’s Custom Proof System” — Matter Labs Research (2023). Technical overview of the Boojum prover — Matter Labs’ custom ZK proof system optimized for GPU-accelerated proving at high transaction throughput.
- “The State of ZK Stack Hyperchains” — Messari (2024). Survey of ZK Stack-based chains in deployment or development — ecosystem mapping, TVL data, and developer activity.