How to access Ethereum data using Etherscan.io API?

How to access Ethereum data using Etherscan.io API?

To access Ethereum data using the Etherscan.io API, follow these steps:

  1. Get an API Key:

    • Register for an account on Etherscan.io.
    • After registering and logging in, navigate to the "API-KEYs" tab to generate a new API key.

  2. Understand the API Endpoints:

    • Etherscan provides various endpoints to access data like transaction details, account balance, contract information, and more. The documentation for these endpoints can be found here: https://etherscan.io/apis

  3. Make Requests to the API: Use standard HTTP requests to access data from Etherscan by providing the appropriate endpoint and parameters.

Here's an example using Python and the requests library to get the balance of an Ethereum address:

import requests ETH_ADDRESS = "YOUR_ETHER_ADDRESS_HERE" API_KEY = "YOUR_ETHERSCAN_API_KEY_HERE" # Create the URL for the request url = f"https://api.etherscan.io/api?module=account&action=balance&address={ETH_ADDRESS}&tag=latest&apikey={API_KEY}" # Make the request response = requests.get(url) # Extract the result from the JSON response data = response.json() balance = int(data['result']) / 1e18 # Convert from Wei to Ether print(f"Balance of address {ETH_ADDRESS}: {balance} Ether")

Make sure you replace YOUR_ETHER_ADDRESS_HERE with the Ethereum address you're interested in and YOUR_ETHERSCAN_API_KEY_HERE with your Etherscan API key.

Also, make sure to install the requests library if you haven't already:

pip install requests

Please be mindful of the rate limits when using the Etherscan API. Refer to their documentation for details on the rate limits to avoid getting your API key temporarily banned.

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