[Contract Verification] How to verify upgradeable contract(TransparentUpgradeableProxy) on zkSync by Hardhat?

[RomanYarinski]

Environment

Mainnet

Issue Type

• Plugin
• Block Explorer

Contract Address

0xf7483A1464DeF6b8d5A6Caca4A8ce7E5be8F1F68

Compiler Type

Multi-part contract

zkSolc Version

0.3.18

Solc Version

8.0.19

Contract Name

TransparentUpgradeableProxy

Contract Code

Standard TransparentUpgradeableProxy

Constructor Arguments

Standard TransparentUpgradeableProxy params, initialize method without arguments

Hardhat Verify Plugin Version

No response

Repo Link (Optional)

No response

Additional Details

hh verify --network zkSyncMainnet 0xf7483A1464DeF6b8d5A6Caca4A8ce7E5be8F1F68
EVM ENV
Verifying implementation: 0x33A6A91f601Ffc837AA831a576E8798C9F26096F
The zksolc compiler version in your Hardhat config file (1.3.18) is not the latest. We recommend using the latest version 1.4.0.
Compiling contracts for zkSync Era with zksolc v1.3.18 and solc v0.8.19
Compiling 22 Solidity files
Implementation on address 0x33A6A91f601Ffc837AA831a576E8798C9F26096F already verified.
Verifying proxy: 0xf7483A1464DeF6b8d5A6Caca4A8ce7E5be8F1F68
No logs found for event topic AdminChanged(address,address) at address 0xf7483A1464DeF6b8d5A6Caca4A8ce7E5be8F1F68
One of possible reasons can be that you are trying to verify a UUPS contract
No logs found for event topic Upgraded(address) at address 0xf7483A1464DeF6b8d5A6Caca4A8ce7E5be8F1F68
One of possible reasons can be that you are trying to verify a UUPS contract
Could not find an event with any of the following topics in the logs for address 0xf7483A1464DeF6b8d5A6Caca4A8ce7E5be8F1F68: AdminChanged(address,address), Upgraded(address)If the proxy was recently deployed, the transaction may not be available on Block Explorer yet. Try running the verify task again after waiting a few blocks.
Verifying proxy admin: 0xDf4a5F0FC2B5524dF89e0BC134f955a9fF348422
No logs found for event topic OwnershipTransferred(address,address) at address 0xDf4a5F0FC2B5524dF89e0BC134f955a9fF348422
One of possible reasons can be that you are trying to verify a UUPS contract
Could not find an event with any of the following topics in the logs for address 0xDf4a5F0FC2B5524dF89e0BC134f955a9fF348422: OwnershipTransferred(address,address)If the proxy was recently deployed, the transaction may not be available on Block Explorer yet. Try running the verify task again after waiting a few blocks.

Please advise how I can verify the proxy contract? Admin and Implementation contracts are verified without problems.

[bxpana]

Did you already try the steps listed in our docs for verifying proxies? https://docs.zksync.io/build/tooling/hardhat/hardhat-zksync-upgradable.html#upgrade-beacon-proxy

[maxfundingrate]

@mpopovac-txfusion just invited you to our repo (Vest Labs)

[mpopovac-txfusion]

Hey @maxfundingrate , thanks for the invite. I inspected the problem and it's not connected directly with the plugin itself, rather to SDK (newer versions for v5) used for sending requests to obtain logs, which are required to find the appropriate contract for verification. It appears that the SDK doesn't handle "falsy" values correctly when creating params for eth_getLogs RPC method.

I will contribute to the SDK to address this issue, but I will also double-check on our plugin side to ensure we avoid this problem. I will notify you when a new release for the upgradable plugin is available.

Additionally, I've verified your contract :D : https://explorer.zksync.io/address/0xf7483A1464DeF6b8d5A6Caca4A8ce7E5be8F1F68#contract

[RomanYarinski]

@mpopovac-txfusion
This is fantastic news, thank you :D
Can we ask you to verify our second proxy contract as well? Exactly the same Proxy for another implementation.
https://explorer.zksync.io/address/0xa8412d1cDbd9cde358cF382FF0D6e88ecA7d7d20#transactions

[mpopovac-txfusion]

It is done. :D