How do you create a blockchain in Python?

Blockchain has proved the power of innovation in introducing positive transformation for technology. The use cases of blockchain technology in different industries, such as banking and financial services, healthcare, governance, and supply chain management, have gained traction. Interestingly, you can create your own blockchain in Python and set a new milestone for digital advancements. 

As one of the most popular programming languages, Python offers an easy way to develop blockchains with its simple features. The benefits of transparency, immutability, and security with blockchain technology serve as prominent reasons for developing blockchain networks using Python. The following post offers you a guide to building a simple blockchain using Python, with a detailed overview of important specifications. 

What Do You Need to Know Before Creating Blockchain with Python?

You should familiarize yourself with the fundamentals of blockchain before you seek a guide for blockchain development with Python. Blockchain is a decentralized collection of fixed records, which include data of varying sizes. The distributed collection of records is available across a large network of computers or nodes. 

The nodes control the blockchain rather than a single blockchain. Another important fact you must know before creating a Python blockchain is hashing. Hashing technology ensures connections between multiple blocks of transactions and plays an important role in ensuring immutability of the blockchain. 

General Workflow for Creating a Blockchain with Python

The process of developing blockchain applications with Python programming language follows a general workflow for simple examples. Beginners can use a blockchain Python example to uncover the important steps required to establish a fully functional blockchain using Python. For instance, you can learn about the format for data storage, hashing techniques, and mining mechanisms. Here are some of the crucial points you must remember before creating a blockchain with Python.

  • The data storage format with Python would be the JSON format, as it offers better readability and ease of implementation. Data would be stored in blocks, and each block would contain data about multiple transactions. 
  • The next important highlight among steps to create a blockchain in Python is the necessity of fingerprinting. It helps in differentiating one block from the other, and blockchain development with Python utilizes the SHA256 hashing algorithm. 
  • Fingerprinting is an essential requirement for connecting the blocks in a chain, as each block is attached to its predecessor, which has its hash.
  • Mining blocks requires an answer for the Proof of Work, and successful mining helps in adding a block to the chain. 

The answers to “How Python is used in blockchain development?” also require attention to the prerequisites and important tool requirements. Some of the mandatory prerequisites for creating a blockchain with Python include the following,

  • Fluency in object-oriented programming concepts such as methods and classes in Python.
  • Familiarity with the applications of Postman Desktop.
  • Basic skills in using command line.

What are the Tools Required for Blockchain Development in Python?

The important tools required for blockchain development in Python include Pycharm, Anaconda, and Visual Studio Code. In addition, beginners must also know how to use Postman Desktop to obtain easy access to APIs. The next noticeable tool for blockchain development with Python is a virtual environment. 

Another helpful tool for creating a blockchain in Python is Flask, which can help in creating blockchain-based web applications. Postman also serves a vital role in making requests for interacting with the new blockchain. It is also important to note that the GET request helps in retrieving the actual state of the blockchain or block mining. 

Steps for Developing Blockchain with Python 

Once you have all the necessary tools, you can start the process of blockchain development with Python by creating the block class. Here are the notable steps you would need to code your blockchain with Python.

  • Create the self.chain list for recording all blocks, which enables accessibility of each block through list indexes. 
  • Develop the genesis block by attaching it to the chain, and it would feature the previous hash as 0.
  • You can create a blockchain in Python by using the ‘create_block_from_transaction’ function to add blocks to the chain.
  • Developers can add another functionality with ‘display_chain’ that helps in printing the chain of blocks by using a ‘for’ loop.
  • It is also important to add the ‘last_block’ property in your Python blockchain code to enable access to the last element in the chain.


The brief overview of the steps to build a blockchain with Python programming language offers the foundations to start your blockchain development projects. You need a detailed response to “How is Python used in blockchain development?” with a detailed explanation of the development process. 

For example, beginners must learn about setting up virtual environments and important highlights in the individual steps. You can develop your expertise in blockchain development with Python and pursue a professional blockchain certification for promising career advantages. Learn more about blockchain technology and the best practices for coding to create your first blockchain with Python now.  

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