How Does ZKsync Era Work?

Custom compiler (zksolc) translates Solidity to ZK-friendly bytecode for SNARK-based proving

Not bytecode-equivalent; uses custom compiler path. This introduces potential compiler bugs as an additional attack surface beyond smart contract logic.

Native account abstraction where all accounts support custom validation and gas payment flows

All accounts natively support account abstraction, enabling paymaster-sponsored transactions and custom signature verification. Increases flexibility but widens attack surface.

Matter Labs-operated centralized sequencer with planned decentralization via ZK Credo

Centralized sequencer operated by Matter Labs. Decentralization roadmap exists but timeline remains uncertain.

Custom SNARK-based proof system with defense-in-depth security architecture

Proof system has required manual pausing to address vulnerabilities. Defense-in-depth approach mitigated user fund risk but exposed liveness concerns.

ZK token with governance rights and three-year unlock schedule from June 2025 to 2028

One-third of supply allocated to investors and team with extended vesting. Airdrop distributed 17.5% of supply to 695K wallets.

Elastic Chain architecture enabling sovereign ZK chains sharing the ZKsync proof system

Allows deployment of custom ZK chains that share proving infrastructure. Novel multi-chain architecture but increases shared prover dependency risk.

Prividium privacy engine for enterprise-grade private ZK chains

2026 roadmap priority. Aims to provide bank-grade privacy infrastructure. Introduces new privacy-specific attack vectors and regulatory compliance complexity.

Canonical bridge with ZK-verified withdrawals and 24-hour finalization delay

Standard ZK rollup bridge. ZKsync Lite deprecation requires users to migrate ~$50M in bridged assets to Era.

State diffs posted to Ethereum L1 with compression for cost optimization

Uses state diff compression to reduce L1 data costs. Standard approach with Ethereum-inherited security guarantees.

Proof system vulnerability required manual pausing, creating a partial liveness failure. Users could not finalize withdrawals during the pause, demonstrating tight coupling between prover and sequencer availability.

V24 upgrade that fixed Gemholic's locked contract also enabled the team to extract $3.5M and rug pull users. Protocol-level fixes can create unintended fund access for malicious projects.

Airdrop distribution contract was exploited for $5M. While user funds were safe, the exploit demonstrated insufficient security review of token distribution infrastructure.

Private ZK chains sharing proving infrastructure with public chains could create information leakage vectors if proof aggregation does not properly isolate private state transitions.

Deprecation of ZKsync Lite forces ~$50M in assets to migrate. Users who miss migration deadlines risk permanent fund loss if Lite infrastructure is fully decommissioned.