Ethereum Layer 2 scaling solution zkSync has achieved another critical milestone toward its mainnet launch—completing the Dynamic Fees upgrade. This update introduces a refined fee model, paymaster support for account abstraction, and EIP-1559 compatibility, advancing zkSync’s mission to scale Ethereum’s security and value.
Dynamic Fees: A Fair and Transparent Model
Running an L2 protocol is resource-intensive, and transaction fees must cover these costs. However, zkSync prioritizes keeping fees as low as possible while ensuring network sustainability. Unlike Ethereum, where fees are static, zkSync 2.0’s costs fluctuate based on:
- Computational resources needed to process and prove transactions.
- L1 gas fees required to finalize data on Ethereum.
To distinguish from Ethereum’s "gas," zkSync uses "ergs" (inspired by the physics term for "work"). Key parameters include:
ergsLimit: Similar to Ethereum’s gas limit.ergPrice: Cost per erg.ergsPerPubdataByte: Caps calldata costs per byte published to L1.
This model lets users control costs and avoid spikes during L1 congestion. As this is an initial implementation, further optimizations are planned based on real-world monitoring and community feedback.
Paymaster Support: Flexible Fee Payment
Inspired by EIP-4337, zkSync’s paymaster feature enables innovative fee payment mechanisms:
- Pay with ERC-20 tokens: No longer limited to ETH.
- Subsidized transactions: dApps can sponsor user fees.
- Custom payment flows: Developers retain full control.
Notably, zkSync’s mainnet won’t have a "default" paymaster, ensuring decentralization. Learn how to integrate paymasters via the zkSync 2.0 documentation.
EIP-1559 Compatibility
While zkSync now supports EIP-1559 transactions, differences exist:
- Transactions are processed first-come, first-served (no priority fees/tips).
- Current implementation is a format, not protocol logic.
Future updates will expand EIP-1559 functionality—stay tuned.
Additional Enhancements
- Vyper Language Support: Build smart contracts using Vyper. Check the example repo.
- Hardhat Compiler Plugin: Now downloads binaries directly (no Docker required).
- zkEVM Improvements: Closer alignment with Ethereum’s behavior.
Troubleshooting Tip: If transactions stall after a restart, reset MetaMask. For further help, join Discord or email [email protected].
What’s Next?
With 59 days until mainnet, zkSync remains on schedule. Developers can start building on the testnet at v2.zksync.io.
👉 Explore zkSync’s latest features for seamless Ethereum scaling.
FAQ
Q: How does zkSync’s fee model differ from Ethereum?
A: Fees adjust dynamically based on L1 gas costs and computational demand, offering users more control.
Q: Can I pay fees with stablecoins like USDC?
A: Yes! Paymasters enable ERC-20 payments—dApps must integrate this feature.
Q: Will EIP-1559 reduce zkSync fees?
A: Currently, it’s a formatting standard; future updates may optimize fee mechanics.
Q: Is Vyper production-ready on zkSync?
A: Yes, but audit your contracts thoroughly.
👉 Start testing on zkSync 2.0 today and join the scaling revolution!