Direct Interaction with Ethereum Smart Contracts: A Tutorial Without Relying on DAPPs

This article will provide a detailed introduction on how to interact directly with Ethereum smart contracts through Etherscan without relying on any DAPPs. This method is not only secure and reliable but also helps you better understand the operating mechanisms of smart contracts.

Preparation Work

Before we begin, please make sure you have the following tools ready:

1. Network proxy tools
2. MetaMask browser extension

Operating Steps

1. Ensure the network connection is stable.

First, enable your network proxy tool. When you are able to successfully access Google search, it indicates that the network connection is normal.

2. Locate target smart contracts

Open the Etherscan block explorer and find the smart contract address you want to interact with. This tutorial uses the NEST 3.0 version of the QP Token deposit contract as an example to demonstrate how to retrieve QP Token.

3. Connect Wallet

On the contract page, click on [Contract], [Write Contract], and [Connect to Web3] in sequence, then connect your MetaMask wallet extension.

4. Find the target method

Scroll down on the contract page to find the method you need to call. In this example, we will use the [takeOut] method.

5. Execute contract interaction

Now, let's fill in the parameters required for interaction:

1. First input box: Enter the amount of QP Token you wish to withdraw. The number must include 18 decimal places. For example, to withdraw 100 tokens, enter: 100000000000000000000; to withdraw 10000 tokens, enter: 10000000000000000000000.

2. Second input box: Enter the contract address of the QP Token you want to withdraw. The contract addresses for different tokens are as follows:

   • NEST Token: 0x04abeda201850ac0124161f037efd70c74ddc74c
   • NYFI: 0x075190c6130ea0a3a7e40802f1d77f4ea8f38fe2
   • NHBTC: 0x1f832091faf289ed4f50fe7418cfbd2611225d46

3. Click the 【Write】 button to initiate the transaction.

4. Click on 【View your transaction】 to check the transaction status and wait for the transaction to be confirmed.

Conclusion

By this method, you can interact directly with smart contracts on Etherscan without using any third-party DAPPs or importing your wallet into unfamiliar software. This not only enhances the security of the operation but also helps you gain a deeper understanding of how smart contracts work. I hope this tutorial can help you better engage in the Ethereum ecosystem.