zkSync represents one of the most technically advanced blockchain scaling solutions in the Ethereum ecosystem — and its June 2024 ZK token airdrop was one of the largest distribution events in Layer 2 history. For presale investors, understanding zkSync matters both as a reference case study in large-scale token distribution and as an active ecosystem where new projects continue launching.
What Is zkSync?
zkSync is a Layer 2 scaling solution for Ethereum built by Matter Labs using zero-knowledge (ZK) proof technology. Unlike optimistic rollups (Arbitrum, Optimism), which assume transactions are valid and only challenge them if disputed, zkSync uses cryptographic proofs that mathematically verify transaction correctness without revealing the underlying data.
ZK-rollup advantages vs. optimistic rollups:
- Faster finality: ZK proofs can confirm batches of transactions in minutes rather than the 7-day challenge periods of optimistic rollups
- Higher security guarantees: Mathematical proof vs. economic assumption
- Lower data overhead: ZK proofs compress transaction data more efficiently
zkSync Era: The Mainnet
zkSync Era (the EVM-compatible version) launched its mainnet in March 2023, making zkSync accessible to the broader Ethereum developer ecosystem. Unlike zkSync Lite (which only supported token transfers), Era supports full smart contract execution with Solidity compatibility.
By Q1 2024 (snapshot date), zkSync Era had processed hundreds of millions of transactions and attracted significant DeFi, NFT, and gaming projects. The snapshot for the ZK airdrop was taken on March 24, 2024 — the one-year anniversary of the Era mainnet launch.
The ZK Token Airdrop: June 2024
On June 11, 2024, the ZKsync Association announced the ZK token airdrop — described as the largest token distribution among major Layer 2 networks.
Key Statistics
- Total ZK supply: 21 billion tokens
- Airdrop amount: 3.675 billion ZK (17.5% of total supply)
- Eligible wallets: 695,232
- Claim window: June 17, 2024 (users) / June 24, 2024 (contributors) — to January 3, 2025
- Eligibility snapshot: March 24, 2024 at 00:00 UTC
- Pre-market FDV: Over $2.5 billion (ZK valued at ~$0.66–0.70 in pre-market)
Token Distribution
- 49.1% — Ecosystem initiatives (grants, liquidity programs, future user incentives)
- 17.5% — Airdrop to users and contributors
- 17.2% — Investors (Matter Labs fundraising rounds)
- 16.1% — Matter Labs team
Notably, the airdrop allocation exceeded both investor and team allocations — the ZKsync Association emphasised this as a statement of community-first intent.
Vesting for Investors and Team
Investor and team tokens are subject to vesting: locked for 1 year (June 2025), then unlocking linearly over 3 years through June 2028. Airdrop recipients received tokens with no vesting — immediate liquidity from day one.
The April 2025 Security Breach
In April 2025, a compromised admin key was used to exploit zkSync's unclaimed airdrop smart contracts. The attacker used the sweepUnclaimed() function to mint approximately 111 million ZK tokens (worth ~$5 million at the time). The breach was isolated to the airdrop distribution contracts — the main protocol and user funds were unaffected. The incident caused a temporary 15–20% ZK token price decline.
This breach is an important case study for presale investors: even audited protocols from reputable teams can have admin key vulnerabilities. The lesson: no smart contract is risk-free, and key management is as important as code quality. See our smart contract audit guide for what audits cover and why they matter.
The zkSync Ecosystem for Presale Investors
As of 2026, zkSync remains an active developer ecosystem with a large grants programme. New projects launching on zkSync Era include:
- DeFi protocols: Lending, DEXs, yield optimisers building on zkSync's lower fee environment
- NFT projects: Collections leveraging zkSync's low transaction costs for high-frequency NFT interactions
- Gaming: On-chain games benefiting from zkSync's speed and EVM compatibility
Finding zkSync ecosystem presales: follow the ZKsync official Twitter and grants programme announcements, monitor zkSync's developer Discord, and use tracking sites that aggregate new zkSync protocol launches.
When evaluating any zkSync presale, key checks include: smart contract deployment on Era (verify on zksync explorer), audit status, liquidity provision plan, and the team's experience with zkSync-specific development. For evaluating DeFi project liquidity, see our crypto liquidity and TVL guide. For token FDV at presale price, see our FDV valuation guide.
Glossary
- ZK-Rollup
- A Layer 2 scaling solution that uses zero-knowledge proofs to mathematically verify transaction correctness, batching many transactions and submitting compressed proof to Ethereum mainnet.
- Zero-Knowledge Proof
- A cryptographic method allowing one party to prove to another that a statement is true without revealing any information beyond the truth of the statement itself.
- zkSync Era
- The EVM-compatible mainnet of zkSync (launched March 2023) supporting full Solidity smart contract execution at low cost via ZK-rollup technology.
- Matter Labs
- The development company behind zkSync. Their team tokens (16.1% of ZK supply) are locked until June 2025 then vesting to June 2028.
- ZKNation
- The decentralised governance system for zkSync, giving ZK token holders voting power over protocol upgrades and ecosystem fund allocation.
Disclaimer
Important: This guide is for educational purposes only. The ZK token airdrop claim window closed January 3, 2025. As of 2026, there is no new claim phase. Always verify information through official zkSync channels before taking any action. CryptoPresaleNews.com is not a licensed financial advisor.
