Verify proxy contract#

How to Verify proxy contract#

Please learn how to deploy an upgradable KIP20 contract

Flatten your contract#

Install flattener#

npm install truffle-flattener -g

Run the following command:

$ truffle-flattener KIP20TokenImplementation.sol > KIP20TokenImplementationFlattened.sol
$ truffle-flattener KIP20UpgradeableProxy.sol > KIP20UpgradeableProxyFlattened.sol"

Compile and deploy your contract with Remix#

Compile Implementation contract#

• Open Remix IDE:https://remix.ethereum.org
• Select solidity language
• Create new contract KIP20Token.sol and copy contract code from flattened KIP20TokenImplementationFlattened.sol
• Compile the implementation contract
• Click on this button to switch to the compile page
• Select “KIP20TokenImplementation” contract
• Enable “Auto compile” and “optimization”
• Click “ABI” to copy the contract abi and save it.

Deploy the implementation contract#

• Select “Injected Web3”
• Select “KIP20TokenImplementation” contract
• Click the ‘Deploy’ button and Metamask will pop up
• Click the ‘Confirm’ button to sign and broadcast the transaction to OKTC.
• Then, you need to initialize the token: fill in all the parameters and click on “transact”

Note: Owner should be the address who send the deploy transaction before.

• Click on the “Copy” icon to save the initializatioin data: Like the following: 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
• Confirm your transaction in MetaMask

Compile proxy contract#

• Create new contract proxy.sol and copy contract code from flattened KIP20UpgradeableProxyFlattened.sol.
• Compile the proxy contractClick on this button to switch to the compile page
• Select “KIP20UpgradeableProxy” contract
• Enable “Auto compile” and “optimization”Click “ABI” to copy the contract abi and save it.

Deploy the proxy contract#

• Select “Injected Web3”Select “KIP20UpgradeableProxy.sol” contract
• Fill in the parameter

Logic: The address of KIP20Implementation contract Admin: admin cannot be KIP20 token owner Data: use the initialization data you saved before

• Click the ‘Deploy’ button and Metamask will pop up
• Click the ‘Confirm’ button to sign and broadcast transaction to OKTC.

Verify proxy contract on OKLink#

Note: The way to verify the KIP20TokenImplementation contract is the same as before.

• Go to your contact page and click on “Verify and Publish” -Select Single file
• Copy your contract code below and check “Optimization” if it’s enabled
• Contractor Data: Please use this site for getting the correct constructor data: https://abi.hashex.org/#

First, you need to copy ABI json of “KIP20UpgradeableProxy.sol” contractThen, click on “Parse” Add all those 3 parameters as indicated. Then copy/paste the result.

That’s it! You have verified your proxy contract.

Link these two contracts#

• Click on “More Options” and choose “is this a proxy”.
• Verify your proxy address Confirm the implementation address. If you go back to the contract page and you can see two more buttons ‘Read as proxy’ and ‘Write as proxy’.