how to create blockchain in python

You can use Python libraries and follow these steps to create a blockchain: establish a blockchain instance, generate a transaction, add it to the blockchain, execute mining to verify transactions, and review the blockchain's history.

Oct 20, 2024 at 03:47 pm

How to Create a Blockchain in Python

A blockchain is a distributed ledger that is used to record transactions across many computers so that any involved record cannot be altered retroactively, without the alteration of all subsequent blocks.

Prerequisites:

Install Python.
Install the necessary libraries:
```
pip install blockchain
```

Steps:

Create a new blockchain.

import blockchain

chain = blockchain.Blockchain()

Create a new transaction.

A transaction is a record of a transfer of value between two parties.

transaction = blockchain.Transaction('alice', 'bob', 10)

Add the transaction to the blockchain.

chain.add_transaction(transaction)

Mine a new block.

Mining is the process of adding a new block to the blockchain. A block is a collection of transactions that have been verified and added to the blockchain.

chain.mine_block()

Check the blockchain.

You can check the blockchain to see the list of transactions and blocks.

print(chain)

Example:

The following code creates a new blockchain, adds a new transaction, and mines a new block.

import blockchain

chain = blockchain.Blockchain()
transaction = blockchain.Transaction('alice', 'bob', 10)
chain.add_transaction(transaction)
chain.mine_block()

print(chain)

Output:

Genesis Block:
Hash: 0
Previous Hash: None
Transactions: []
Nonce: 0

Block 1:
Hash: 1234567890
Previous Hash: 0
Transactions: [('alice', 'bob', 10)]
Nonce: 42

Disclaimer:info@kdj.com

The information provided is not trading advice. kdj.com does not assume any responsibility for any investments made based on the information provided in this article. Cryptocurrencies are highly volatile and it is highly recommended that you invest with caution after thorough research！

If you believe that the content used on this website infringes your copyright, please contact us immediately (info@kdj.com) and we will delete it promptly.

Fear & Greed Index

Trade Now

Biggest Gainers

GRD

$236.13

1043.81%

Trade Now
LVN

$0.0828

109.67%

Trade Now
FLZ

$2.19

58.11%

Trade Now
DHN

$5.45

55.61%

Trade Now
EUL

$10.95

21.21%

Trade Now
KOGE

$47.80

16.01%

Trade Now

Latest Crypto News

Bitcoin, Stablecoins, and Treasuries: A New Era of Digital Finance
2025-06-28 04:50:12
Sei Price Surges with Double-Digit Gains: What's the Key Level?
2025-06-28 05:30:12
GoMining: Gamified NFTs and the Future of Bitcoin Mining
2025-06-28 04:30:12
Shiba Inu Price Forecast: Will the SHIB Surge Continue?
2025-06-28 05:30:12
Prediction Markets, USDC Flows, and Stablecoin Utility: A New Era?
2025-06-28 05:30:12
Hasbulla, Meme Coins, and Rug Pulls: A New York Minute on Crypto Chaos
2025-06-28 05:35:13

Related knowledge

What is an oracle in blockchain? Detailed explanation of its role

Jun 21,2025 at 06:14am

Understanding the Concept of an Oracle in BlockchainIn the realm of blockchain technology, an oracle is a trusted third-party service that connects smart contracts with real-world data. Smart contracts are self-executing agreements where the terms are written directly into code and run on a blockchain network. However, these contracts operate in a close...

Does token destruction affect prices? Case study

Jun 22,2025 at 02:50am

Understanding Token DestructionToken destruction, commonly referred to as token burning, is a process where a portion of cryptocurrency tokens is permanently removed from circulation. This is typically done by sending the tokens to a non-recoverable wallet address, effectively reducing the total supply. Projects may implement token burns to create scarc...

What is a blockchain node? Popular science on the operating principle

Jun 22,2025 at 11:00pm

Understanding the Basics of a Blockchain NodeA blockchain node is essentially a computer connected to a blockchain network that participates in validating and storing transaction data. Each node plays a critical role in maintaining the integrity, transparency, and decentralization of the blockchain. Unlike traditional centralized systems where a single ...

What is the difference between DEX and CEX? A comprehensive analysis of the pros and cons

Jun 24,2025 at 09:42am

What is a DEX (Decentralized Exchange)?A DEX, or Decentralized Exchange, operates without a central authority. Unlike traditional platforms, DEXs allow users to trade cryptocurrencies directly from their wallets. These exchanges rely on smart contracts to facilitate transactions, ensuring that no intermediary holds user funds. One of the most notable fe...

What is zero-knowledge proof? Key privacy protection technology

Jun 22,2025 at 07:29pm

Understanding Zero-Knowledge ProofZero-knowledge proof (ZKP) is a cryptographic method that allows one party to prove to another party that they know a value or information without revealing the actual content of that information. This concept is particularly important in the realm of privacy protection technologies, especially within blockchain and cry...

What can a blockchain browser check? A practical function guide

Jun 20,2025 at 07:35pm

Understanding the Role of a Blockchain BrowserA blockchain browser serves as a powerful tool for anyone interacting with blockchain networks. It allows users to explore, verify, and analyze data stored on the blockchain in real time. Unlike traditional ledgers or databases that are centralized, blockchains are decentralized and publicly accessible. This...