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Blockchain Tutorial

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Blockchain technology in simple words is a digital database where information or data is stored in blocks that are linked together to form a chain. This Blockchain Tutorial covers all basic to advanced topics of blockchain like cryptography, Blockchain Algorithms, Blockchain Architecture, Blockchain Security, Smart Contracts, etc.

Blockchain Tutorial

What is Blockchain?

A Blockchain is a digital ledger of transactions that is secure, immutable, and decentralized. It consists of a chain of blocks and each block contains a secure group of transactions of money, bitcoins, contracts, property, etc. without any need for third-party middle-man such as central authorities, banks, government, etc. Transactions are verified by a network of computers. Once a block of information is created in the chain, it can’t be changed or deleted. This makes the blockchain very secure and trustworthy. It is a software protocol, it never runs without the internet.

A Blockchain is a chain of blocks that contains information about transactions. On completion of a transaction, it will go to the blockchain’s permanent database. It is mainly used for secure transactions without any third-party involvement in between. To visualize blocks, transactions, and blockchain network metrics, you can use blockchain explorer.

Why Do We Use Blockchain?

Blockchain is a distributed digital ledger of transactions. It changes the whole concept of the transaction now we don’t have any need for centralized authorities to verify our transactions, blockchain makes it decentralized and secure. The security is maintained by cryptographic processes performed by p2p users, through the process called Data mining Here are some important features given below:

  • Secure
  • Transparent
  • Tamper-proof
  • Peer-to-peer transaction

Recent Articles on Blockchain


Introduction to Blockchain Technology


Consensus Algorithms

Blockchain Architecture

Blockchain and Cryptocurrency

Smart Contracts and Decentralized Applications (DApps)

Blockchain Security

Blockchain Applications

Blockchain Implementation


Interview Questions

FAQs on Blockchain Technology

1. What programming languages are used for Blockchain?

We can use several programming languages to make our Blockchain-based projects :

Solidity is the majority-used programming language for blockchain-based projects. 

2. How Blockchain works step by step?

In general, many nodes within the same blockchain implementation are required to perform algorithms to evaluate, validate, and process the history of the blockchain block whenever a new blockchain transaction is added to the blockchain. The fresh block of blockchain transaction is accepted into the ledger and the new block containing data is added to the blockchain if the majority of nodes confirm the authenticity of the block’s history and signature.

3. What is a Blockchain Platform?

A blockchain platform allows developers and users to create transactions in the existing blockchain database. For example, Ethereum has a native cryptocurrency called Ether (ETH). But the Ethereum blockchain allows users to create smart contracts and programmable tokens used in initial coin offerings (ICOs), and non-fungible tokens (NFTs). These are built upon the Ethereum infrastructure and secure by Ethereum network algorithms and system

4. What Is Cryptocurrency?

Cryptocurrencies are often traded on decentralized exchanges and can also be used to purchase goods and services. It is a digital or virtual currency that uses cryptography to encrypt its transactions and regulate the creation of new nodes or blocks.

5. What is a Blockchain Wallet?

Blockchain wallets are like bank accounts in that they allow users to easily transfer money between their various accounts. But where banks rely on centralized systems or government rules and protocols to hold customers’ money, blockchain wallets use decentralized technology to manage transactions. It is a digital wallet that allows us to store, send, and receive cryptocurrencies like Bitcoin, Ethereum, Dogecoin, and Tether.

Last Updated : 17 Apr, 2023
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