Top 10 Programming Languages for Blockchain App Development

However, if you come straight from the traditional Web2 development space, you need to consider some minor differences before embarking on any Python Web3 endeavors. For example, mastery of libraries such as ”” is highly beneficial. This Python-based library blockchain implementation makes it more seamless to interact with the Ethereum network. In Python, all it takes is fixing the bug and reloading the application – you won’t have to recompile the code. You can use Python to code a blockchain without having to write a lot of code.

In the above snippet of code, we have defined the hash() function and accepts one block and turned them into Strings and then into Unicode for hashing. We have then used the SHA256() function for encryption and then translated the Unicode into a Hexadecimal string. Blockchains are used to facilitate trusted transactions between two parties without the need for an authoritative mediator. I learned my first programming language back in 2015. Ever since then, I’ve been learning programming and immersing myself in technology.

Python Tutorial

This typically involves creating a hash that begins with a certain number of zeros, with the difficulty of the problem increasing as the target value becomes smaller. In a blockchain network, blocks are created by miner nodes. These nodes retrieve transactions from the mempool and include them in a new block that they are working on. Each block contains a header, which includes important details such as the version number, the hash of the previous block, a timestamp, and a target number.

  • The new_transcaction method will create a new transaction and then add the transaction to the already existing transaction list.
  • In our example above it’s fine to say that the block of height 1 is also the block of hash 6b86.
  • Web scraping, residential proxy, proxy manager, web unlocker, search engine crawler, and all you need to collect web data.
  • It’s great for exploring multiple time series using D3— with zooming functionality and hover based info.
  • Next, we’ll find the number of token projects per protocol.

Every mined block automatically rewards the miner with some bitcoin. Learn the fundamental concepts that allow all blockchains to function. Next, we create add_block to add each successive block to the chain.


In combination with the Python SKD, you used Moralis’ Auth API to add the MetaMask login functionality. However, MetaMask is only one of many wallet connectors supported by the Auth API. If you want to explore other options, check out Moralis’ Web3 blog for additional articles. For example, learn how to add Coinbase Wallet login functionality or add a sign in with RainbowKit. We will not cover the details of how this application works.

blockchain implementation python

After that, you will be able to decide which programming language suits your condition, and you can select according to your project and needs. Python is a language that guarantees stability and reliability. Thus, one can be assured that their project is not based on a language that will become obsolete at any time. The gentle learning curve of Python allows developers to master it quickly and helps less experienced developers contribute to blockchain projects.

Python and Web3 – A Web3 and Python Tutorial for Blockchain Development

First, we established the concept of a block and a blockchain, including protocols for hashing each block and creating the first block. In this tutorial, we used Python to create an ongoing chain of hash-based proof-of-work. Note that the chain only has one block at this point . Feel free to take advantage of the mining function that we built to add more blocks to the chain. In order to use it, we will need to build an interface which multiple users, or nodes, can interact with. Flask is a lightweight web application framework written for Python.

blockchain implementation python

To do so, we have to make sure that it does the following three things. I am using the Python Community edition for the tutorial. Another great alternative is Visual Studio Code — a free, open-source integrated development environment. If you decide to use other versions of Python, then you might have to do more research for the code to work. For tutorial purposes, I recommend installing the version that I am using.

Block Class

We’ll mainly focus on implementing the basics of a blockchain with Python. Blockchain-demo is an implemtation of the blockchain-data-structure and a small simulation how the blockchain works. Hash – This is a hash generated using all the above-mentioned properties present in a block. This property uniquely identifies a block in a blockchain. Timestamp – The time at which the block was created.

blockchain implementation python

As an example, Python allows you to create a simple blockchain in less than 50 lines of code. Now we want to pull in the Circulating Supply in parallel from CryptoCompare, and merge it with our original stats, which only includes Max Supply. The former is used currently as the widely accepted method of measuring market cap of a digital asset. For a more in depth discussion of future and prospective measurements which may be more suitable in blockchain valuation — see this excellent post by Nomics. Another popular site uses Circulating Supply for their marketcap calculations. The post will explore the nature of tokens which utilize protocols (i.e., platforms) such as Ethereum, with tokens based on ERC20 among others.


Please include attribution to with this graphic. What’s more, you can now use the same fundamental principles to add other Web3 Python backend functionality. If you would like to learn more about this and the capabilities of Moralis as a Web3 Python provider, check out our official Web3 Python SDK documentation. As the image illustrates, the initial login page has a ”Python Web3 Authentication” heading and a ”Login” button. If you click on the button, it launches your MetaMask, asking you to connect your Web3 wallet.

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