ZK deterministic address

[johnpaulcas]

I tried to deploy contracts on mainnet eth and zksync era, Im using same address and nonce but my deployment contracts end up different contract address? but when I deployed to eth and polygon and bsc it generate same contract address

is there any difference on zkSync era why its not generating same deterministic address?

[dutterbutter]

Hey @johnpaulcas 👋 Yes there are differences. You can review this part of the docs that describes how zkSync employs a unique account model and method for generating contract addresses. Instead of just relying on the sender's address and nonce like Ethereum, BSC, or Polygon, zkSync splits the nonce into two parts: the deployment nonce and the transaction nonce. This is in order to facilitate support for account abstraction.

To have a deterministic address, you should use the create2 method from ContractDeployer. It is available for EOAs as well.

[ZhimaoL]

Hi @dutterbutter, it makes sense to use create2 from the ContractDeployer to get a deterministic address, some quick follow-up questions:

1. I use a deployer contract with the create2 method on Ethereum, Op, and Arb to get the same deployed addresses. Even though the contract itself is the same, I cannot get the same deployed address again on Era because there is no "customized deployer contract" on Era and we have to use a system deployer contract, right?

2. Anyway to compute the counterfactual address? Similar to openzepplin's computeAddress.

3. All my contract factories previously reply on customized deployer contracts need to switch to call create2 on system-level ContractDeployer directly right? Not sure if this is the best practice.

Thanks a lot!

[dutterbutter]

Hey hey 👋 ,

(1) Yes, that is correct you need to make use of the system contract, ContractDeployer
(2) We have different address derivation from EVM, so the formula should be slightly modified. You can refer to this implementation here 👉 getNewAddressCreate2
(3) Not exactly sure your system requirements, but again need to make of the system contract, ContractDeployer

Hope that helps! Happy hacking.