Develop Smart Contracts and Dapps
Last updated
Last updated
Considering that Cronos zkEVM is based on zkSync technology, the zkSync docs at apply to Cronos zkEVM as well.
As far as the Cronos zkEVM testnet is concerned, the main differences with zkSync Era are:
The JSON RPC URL:
The Chain ID: 388
The blockchain explorer URL:
WebSocket (rate limited): wss://ws.zkevm.cronos.org
The denomination of the L2 protocol token: zkCRO
Gas price: The gas price of is currently fixed at 1250gwei
This is subject to change and is expected to be dynamic in the next major release to be announced.
Whereas zkSync Era uses ETH as the token to pay for transaction fees on the Layer 2, Cronos zkEVM uses zkCRO. This means that the gas token of Cronos zkEVM (zkCRO) is different from the gas token on the Layer 1 (Ethereum). This is a major difference that developers need to take into account when they create cross-chain transactions.
As far as the Cronos zkEVM Sepolia testnet is concerned, the main differences with zkSync Era are:
The Chain ID: 240
WebSocket (rate limited): wss://ws.testnet.zkevm.cronos.org
This is subject to change and is expected to be dynamic in the next major release to be announced.
The denomination of the L2 protocol token: zkTCRO
The JSON RPC URL:
The blockchain explorer URL:
Gas price: The gas price of is currently fixed at 1250gwei