Verifying Uniswap Transactions Using Etherscan API

As a developer, it is important to verify the authenticity and legitimacy of transactions on the Ethereum blockchain. One such use case is to verify whether a given transaction belongs to the Uniswap exchange.

In this article, we will show you how to use the Etherscan API to filter Uniswap transactions for a specific address.

Prerequisites

• You have an account with Etherscan and can access their API.

• The address you want to verify is associated with a Uniswap account.

Step 1: Set up an Etherscan API request

To use the Etherscan API, you need to:

• Create a new API request by clicking on “Settings” (the gear icon) and selecting “APIs”.

• Fill in the required information:

• Name: Give your API request a unique name.

• Description: Briefly describe what this API does.

• Endpoint

  

  : Enter the Etherscan API endpoint for the requested data, which is

• Filters: Set the filter to «Uniswap».

Step 2: Type the Etherscan API request code

Here is an example of how you can use JavaScript to make an API request using the ‘fetch’ API:

async function checkUniswapTransactions(address) {
const url = ' + address;
try {
const response = await fetch(url);
if (!response.ok) {
throw new Error(Error fetching transactions: ${response.statusText});
}
const data = await response.json();
console.log(data);
} catch (error) {
console.error(error.message);
}
}

Step 3: Send the API request and parse the response

Replace «checkUniswapTransactions» with your own function:

checkUniswapTransactions('0x534a0076fb7c2b1f83fa21497429ad7ad3bd7587')
.then((transactions) => {
console.log(transactions);
})
.catch((error) => {
console.error(error.message);
});

Example Output

The API will return an object with the transaction data. For example:

{
"status": 1,
"result": [
{
"from": "0x534a0076fb7c2b1f83fa21497429ad7ad3bd7587",
"to": "0x1234567890abcdef",
"value": 10000000,
"gas": 2000000,
"Gas price": 20000
}
]
}

In this example, the transactions are marked with a «status» equal to 1, indicating success. We can then use the resulting data to filter and verify the authenticity of these transactions.

Tips and Variations

• To filter by specific asset types (e.g. tokens or assets), change the API URL accordingly.

• You can add additional filters or parameters to further refine your search results.

• If you need to retrieve a list of all transactions for a specific address, use the getAccount endpoint.

By following these steps and experimenting with different approaches, you should be able to successfully filter Uniswap transactions using the Etherscan API.