Verification of simple Ethereum address by API

As an Ethereum developer, you are probably familiar with the importance of tracking transactions on blockchain. One way to achieve this is using APIs that allow you to ask the Ethereum network and recover information about specific addresses. In this article, we will explore how to use the ETHERSCAN API (previously known as blockscout) to perform a simple address check.

What is Etherscan API?

ETHERSCAN is a Blockchain Open-Source explore that provides access to various data on Ethereum nodes, transactions and assets. It is built above the blockchain.info platform and offers a comprehensive suite of APIs for accessing and querying the Ethereum network.

Why use ETHERSCAN API?

The use of ETHERSCAN API offers more advantages:

* Real time data : API provides up-to-date information about transactions, blocks and other blockchain events.

* Scalability : API is designed to manage large volumes of requests, which makes it suitable for wide-scale applications.

* Flexibility : You can use API in different programming languages, including Node.JS, Python and Javascript.

Simple address verification via ETHERSCAN API

To verify that a specific Ethereum address has made transactions, you will need to:

• Register an account on Etherscan or Blockchain.info

• Get API keys (if necessary)

• Choose the API lens for your desired use case

Here is an example of a Python code fragment that demonstrates how to perform a simple address check using ETHERSCAN API:

`Python

Import requests

def get_transactions (address):

URL = f " [ddress tam

Reply = Requests.Get (URL)

If answered.status_code == 200:

return int (reply.json () ["result"])

Otherwise:

He doesn't return any

Replace -va_pi_key with your effective API Etherscan key

api_key = "your_api_key"

Address = "0x1234567890ABCDEF"

replace with the address you want to check

Transactions

print (f "{address} has {transactions_count} transactions.")

In this example, we use the “Requests” Library to send a Get request to the ETHERSCAN API with the specified parameters. Then we analyze the JSON response to take over the number of transactions.

Error handling and security

When making requests to external APIs, it is essential to manage errors and ensure security. In the example above, I added the handling of the basic errors using respond.status_code and requests.get () return value.

In addition, do not forget to replace the real API key with a valid one to avoid unauthorized access.

Conclusion

Ethereum offers an excellent solution for tracking on blockchain. Using the Etherscan API, you can effectively carry out simple address checks and you can be aware of the latest Ethereum nodes and transactions. With this article as a starting point, you will be about to build robust applications that interact with the Ethereum network.

additional resources

For more information on the use of ETHERSCAN API or other Blockchain topics, see the official ETHERSCAN documentation, [Ethereum developer Guide] ( and renowned sources such as blockchain.info and peelingorge .

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