[Contract Verification] Unable to verify Ethena USDe contracts

[iethena]

Team or Project

Ethena

Environment

Mainnet

Block Explorer

https://era.zksync.network/

Issue Type

• Plugin
• Block Explorer

Contract Address

0x39Fe7a0DACcE31Bd90418e3e659fb0b5f0B3Db0d

Compiler Type

Multi-part contract

zkSolc Version

1.5.0

Solc Version

0.8.22

Contract Name

USDeOFT

Contract Code

Contract is verified on https://explorer.zksync.io/

https://explorer.zksync.io/address/0x39Fe7a0DACcE31Bd90418e3e659fb0b5f0B3Db0d#contract

Constructor Arguments

[
  [
    {
      "dstEid": 30181,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30217,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30101,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30110,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30102,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30111,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30151,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30177,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30214,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30260,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30255,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30183,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30243,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30420,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30155,
      "limit": "10000000000000000000000000",
      "window": "3600"
    },
    {
      "dstEid": 30184,
      "limit": "10000000000000000000000000",
      "window": "3600"
    }
  ],
  "USDe",
  "USDe",
  "0xd07C30aF3Ff30D96BDc9c6044958230Eb797DDBF",
  "0xAa439FB33e55306c7c79841F20121B4c4139f3dc"
]

Hardhat Verify Plugin Version

1.7.1

Repo Link (Optional)

repo is private

Additional Details

We have successfully verified our contracts on https://explorer.zksync.io/ using the hardhat plugin.

We have followed this documentation for hardhat-zksync-verify - https://docs.zksync.io/zksync-era/tooling/hardhat/plugins/hardhat-zksync-verify#commands

We have attempted to verify our contracts on https://era.zksync.network/ with the same hardhat plugin and the same arguments except for a change to the verifying URL to point to the relevant explorer. The output from the hardhat-zksync-verify plugin is as follows:

ZkSyncEtherscan:
The address provided as argument contains a contract, but its bytecode doesn't match any of your local contracts.

our hardhat config includes the following in the networks section:

        zksync: {
            eid: EndpointId.ZKSYNC_V2_MAINNET,
            zksync: true,
            url: process.env.RPC_URL_ZKSYNC || 'https://zksync.drpc.org',
            verifyURL: 'https://api-era.zksync.network/api',
            accounts,
        },

our hardhat config also contains the following in etherscan.apiKey:

        zksyncmainnet: process.env.ZKSYNCSCAN_API_KEY || '',

our compiler versions are defined like this:

    solidity: {
        compilers: [
            {
                version: '0.8.22',
                settings: {
                    optimizer: {
                        enabled: true,
                        runs: 200,
                    },
                },
            },
        ],
    },
    zksolc: {
        version: '1.5.0',
        settings: {
            libraries: {},
        },
    },

we are using the following command:

npx hardhat verify --network zksync 0x39Fe7a0DACcE31Bd90418e3e659fb0b5f0B3Db0d --constructor-args misc/args.json --contract contracts/usde/USDeOFT.sol:USDeOFT

We have also attempted to use foundryup-zksync and installed the zksync version of forge. We have attempted with the following command:

forge verify-contract 0x39Fe7a0DACcE31Bd90418e3e659fb0b5f0B3Db0d  contracts/usde/USDeOFT.sol:USDeOFT --skip-is-verified-check --rpc-url https://1rpc.io/zksync2-era --verifier etherscan --etherscan-api-key $ZKSYNCSCAN_API_KEY --chain zksync --zksync --verifier-url 'https://api-era.zksync.network/api' --compiler-version 0.8.22 --optimizer-runs 200 --constructor-args $(cast abi-encode "constructor((uint32,uint256,uint256)[],string,string,address,address)" "[(30181,10000000000000000000000000,3600),(30217,10000000000000000000000000,3600),(30101,10000000000000000000000000,3600),(30110,10000000000000000000000000,3600),(30102,10000000000000000000000000,3600),(30111,10000000000000000000000000,3600),(30151,10000000000000000000000000,3600),(30177,10000000000000000000000000,3600),(30214,10000000000000000000000000,3600),(30260,10000000000000000000000000,3600),(30255,10000000000000000000000000,3600),(30183,10000000000000000000000000,3600),(30243,10000000000000000000000000,3600),(30420,10000000000000000000000000,3600),(30155,10000000000000000000000000,3600),(30184,10000000000000000000000000,3600)]" "USDe" "USDe" "0xd07C30aF3Ff30D96BDc9c6044958230Eb797DDBF" "0xAa439FB33e55306c7c79841F20121B4c4139f3dc" --zksync) --watch

However, we notice there is no option to specify the zksolc version (at least it is not documented) - following this documentation - https://foundry-book.zksync.io/forge/deploying?highlight=verify#verifying-a-pre-existing-contract

[kiriyaga-txfusion]

Hello @iethena,
Based on the message you received, it seems that your bytecode has changed locally and no longer matches the bytecode on the chain, which is why the plugin is throwing this validation error. Several factors could cause this, so make sure you're using the same setup and configurations as when you deployed the contract.

PS: You don’t need to change verifyURL to 'https://api-era.zksync.network/api' since it doesn’t have any effect. This URL is only for ZKSync block explorer verification and not for Etherscan.

[iethena]

got it, what is the correct verifier url for etherscan?

[popzxc]

You don't need to specify it, it will be picked up automatically.

[iethena]

Hi we have managed to manually verify the contract 0x39Fe7a0DACcE31Bd90418e3e659fb0b5f0B3Db0d using flattened solidity file from the output of:

npx hardhat flatten --network zksync <PATH_TO_CONTRACT>

We also replicated the same result with the contract at 0xAD17Da2f6Ac76746EF261E835C50b2651ce36DA8

We now have an issue doing the same for 0x686b311F82b407f0be842652a98e5619F64cC25F as the contract has been partially matched and we cannot upload via the GUI - we have also tried via http post request but get the following response:

{
    "status": "0",
    "message": "NOTOK",
    "result": "Already Verified"
}

We have uploaded the standard json input here - https://gist.github.com/iethena/87b2bc90d84878d6f9ce4b8b7d2dde52

Please help us get this contract fully matched.

[bxpana]

@iethena if you're still having issues with this please unmark the answer as answered to alert our devs on support