Metamask: How can you know which token was staked on your contract?

Determining which token was bet on your contract

When developing your smart contract and implementing the user’s betting functionality, ensuring that users can track their allocated tokens is crucial to transparency and safety. In this article, we will explore how to determine which token a user lowered their contract.

Understanding the ERC20 token standard

Before diving into the solution, it is essential to understand the token ERC20 standard. The ERC-20 is an open pattern to represent and negotiate digital tokens, designed by Ethereum co-founder Joseph Lubin. Tokens can represent various actives, such as cryptocurrency, art or even utility tokens.

Using the EtherScan API to track state tokens

One approach to determine which token a user bet on your contract is to use the Polygon (previously Matic Network) API. EtherScan allows us to consult its smart contracts and recover information about betting assets using its internal functions.

Here is an example of how you can use the Etherscan API to track sterilized tokens:

• Create a contract address : replace your_contract_address with your smart contract address.

• Define the function to consult : Create a function that takes two arguments: Address e Tokenaddress. This function will return an object that contains information about tokens established in your contract.

Example:

JavaScript

GetsakedTokens function (address, tokenaddress) {

CONCT account = ETHERSCAN.Connect ();

CONST Result = awaits account.getACCOUNTSBYTOKENID ({tokenid: tokenaddress});

Return result;

}

`

• Call the

  function: When a user chops your token into your contract, call the ‘GetstakedTokens’ function with the token address and id.

Example:

`JavaScript

// The user was eth

Userstakedeth = Wait GetsAkedTokens (Useraddress, ‘0x1234567890abcdef’);

`

• Analyze the result : The EtherScan API returns an object that contains information about each contract account. Analyze this object to determine which tokens were retained by the user.

Example:

`JavaScript

// The user put 100 eths on his Ethereum account

Userstakedeth = {

Account: ‘0x1234567890abcdef’,

Balance: 100,

Tokens: [‘Eth’, ‘Eth’, …] // Additional information about the tokens Stores

};

console.log (userstakedeth.tokens);

// output: [‘eth’]

`

Additional considerations

While using the EtherScan API is a reliable way to track stylized tokens, there are some limitations and considerations:

* GAS COSTS : The use of the Etherscan API incurs gas costs when consulting your intelligent contract. This can be expensive for large contracts or complex queries.

* Network rates

: If you are using a decentralized application (DAPP) on Ethereum or other blockchain networks, you may incur network rates when consulting your smart contract.

Conclusion

Determining which token has been betting on your contract is now easier with the Etherscan API. By understanding how to consult your smart contracts and analyze the result, you can provide users valuable information about your allocated tokens. Although there are some limitations and considerations to be remembered, this approach offers a reliable and efficient way to manage the user’s betting functionality.