Blockchain Tutorial - GeeksforGeeks (2024)

Flutter and Blockchain - Hello World Dapp

This tutorial will take you through the process of building your first mobile dapp - Hello World Dapp! This tutorial is meant for those with a basic knowledge of Ethereum and smart contracts, who have some knowledge of the Flutter framework but are new to mobile dapps. In this tutorial we will be covering: Setting up the development environmentCrea

Integration of Artificial Intelligence and BlockChain

Artificial Intelligence and Blockchain are proving to be quite a powerful combination, improving virtually every industry in which they're implemented. These technologies can be combined to upgrade everything from food supply chain logistics and healthcare record sharing to media royalties and financial security. The integration of AI and Blockchai

How to use GANACHE Truffle Suite to Deploy a Smart Contract in Solidity (Blockchain)?

There are various processes involved in deploying a smart contract using Ganache and Truffle Suite: 1. Install Ganache first. Ganache is a personal blockchain for Ethereum development. You must first download and install it. It is available for download from https://www.trufflesuite.com/ganache, the official website. 2. Install Truffle Suite: The n

Introduction to Blockchain technology | Set 2

Blockchain technology has been garnering great hype recently. It gained popularity after the introduction of Bitcoin in 2009 by the person or group of people by the pseudonym Satoshi Nakamoto. Many people confuse and believe blockchain to be bitcoin. But, bitcoin is one application of the blockchain technology. There are many other applications and

What is Blockchain Wallet?

A blockchain wallet is a software that enables sending and receiving cryptocurrencies such as Bitcoin, Ethereum, etc. It stores the record of transactions and also public and private keys which are used to perform transactions. A public key is similar to an account number. If A wants to send some money to B using Bitcoin when A sends the public key

What is Consortium Blockchain?

A consortium blockchain is a group of multiple financial institutions where each financial institution has its private blockchain. In this blockchain, a pre-selected set of nodes are allowed to control the consensus process. What is Consortium Blockchain?Consortium blockchains are managed and run by a number of organizations or entities. As a permi

Blockchain - Proof of Work (PoW)

Proof of Work consensus is the mechanism of choice for the majority of cryptocurrencies currently in circulation. The algorithm is used to verify the transaction and create a new block in the blockchain. The idea for Proof of Work(PoW) was first published in 1993 by Cynthia Dwork and Moni Naor and was later applied by Satoshi Nakamoto in the Bitcoi

Benefits of Blockchain Technology

Blockchain is the backbone Technology of Digital CryptoCurrency BitCoin. Blockchain technology is a digital or ledger technology that evaluates the records and makes track of it in a peer-to-peer network. Each transaction is verified by the majority of participants of the system. It contains every single record of each transaction. Benefits of Bloc

Blockchain and Data Privacy

Blockchain has been defined as a digital, decentralized ledger that keeps a record of all transactions that take place across a peer-to-peer network. It enables the secure transfer of assets without an intermediary. It also provides a record of transactions that is fully transparent and displayed in real-time for benefit of participants. Blockchain

7 Project Ideas on Blockchain For Professionals

We have passed the time when blockchain was used only in the form of cryptocurrency. Today, it is being used in a broader domain and it's going to dominate in the coming future. As per the latest reports, it is expected that corporations will spend around $20 Billion on blockchain technical services by 2024. Industries like Healthcare, Insurance, I

Consensus Algorithms in Blockchain

Prerequisites: Introduction to Blockchain technology | Set 1, Set 2 We know that Blockchain is a distributed decentralized network that provides immutability, privacy, security, and transparency. There is no central authority present to validate and verify the transactions, yet every transaction in the Blockchain is considered to be completely secu

Blockchain to Secure IoT Data

INTRODUCTION: Internet of things and Blockchain are two technologies which are gaining popularity since the time of their creation. In the near future, IoT is going to influence almost every day-to-day items we use. As the usage of this technology increases, the threat to misuse it also increases. Existing technologies are not enough to deal with t

Difference between Blockchain and a Database

Database: Generally a database is a data structure which is used for storing information. It is a organised collection or storage of data which is able to store a new data or access a existing data. The data stored in a database can be organized using a database management system. The database administrator can modify the data stored in the databas

What Are Cryptoasssets in Blockchain

So as you are aware of Blockchain technology and have of the basic idea of it, in this article we will be talking about the cryptocurrency part of the blockchain, more specifically about the crypto-assets. As we know, an asset is something that holds value, similarly, a crypto-asset is an asset that is based on cryptography. Mostly it is a virtual

Basics of the Blockchain and its various applications

The BlockChain, to begin with is undeniably one of the most ingenious inventions of mankind. Considering it to be the brainchild the pseudonym, Satoshi Nakamoto, the technology has evolved into something unimaginably great. However, the most commonly asked always arises every single time - What is this Blockchain? A BlockChain is defined as a peer

Proof of Stake (PoS) in Blockchain

Proof of Stake (PoS) is a type of algorithm which aims to achieve distributed consensus in a Blockchain. This way to achieve consensus was first suggested by Quantum Mechanic here and later Sunny King and his peer wrote a paper on it. This led to Proof-of-Stake (PoS) based Peercoin. A stake is value/money we bet on a certain outcome. The process is

How Block Hashes Work in Blockchain?

Blockchain is the backbone technology of the digital cryptocurrency Bitcoin. The blockchain is a distributed database of records of all transactions or digital events that have been executed and shared among participating parties. Each transaction is verified by the majority of participants of the system. It contains every single record of each tra

Features of Blockchain

Here In this article, we will discuss the features of blockchain technology and how they make it a revolutionary and highly desirable platform for various applications. A blockchain is a chain of blocks that contains information. Most people think that Blockchain is Bitcoin and vice-versa. But it’s not the case. In fact, Bitcoin is a digital curren

How does BlockChain support Crowdfunding ?

The Crowdfunding platform in block-chain makes different possibilities for the startups by raising the funds to create their own digital currency and it is peer-to-peer fund raising model some of the famous crowdfunding cryptocurrencies are coinspace, swarm, judobaby etc. Crowdfunding has offers for creators and other consumers. Anyone can particip

Demur-rage currencies in Blockchain

Currency is one such core concept in blockchain technology that can extended and re-understood. Currency which is usually referred as digital token it facilitates quantified transfer mechanism. This idea is known as Demur-rage currency. Demur-rage means "cost of carrying"- that is the cost to carry an asset. The Demur-rage originated from freight a

Blockchain Gaming : Part 1 (Introduction)

Blockchain Gaming. It’s a world of it’s own. It’s ‘Ready Player One’ incorporated into gaming. Before reading this article, it is recommended to read: Introduction to Blockchain to get well versed with the concept of blockchain. Part-1: Transparency, Proven Rarity and True Ownership Transparency: When games use third party distribution platforms li

Blockchain Hash Function

A hash function is a mathematical function that takes an input string of any length and converts it to a fixed-length output string. The fixed-length output is known as the hash value. To be cryptographically secure and useful, a hash function should have the following properties: Collision resistant: Give two messages m1 and m2, it is difficult to

Guidelines for learning Blockchain

As a beginner, while starting learning something new everyone is having a question in mind, "How to get started?". When I started learning Blockchain I was in the same situation. So I want to share my journey of BLOCKCHAIN with you, by this, every technical worm who is interested in learning new technologies will get an idea about this trending tec

Blockchain and Block Header

Blockchain is a database, or broadly distributed database, used mainly for concurrent transactions and one of the most popular implementations of blockchain is Bitcoin. Blockchain has several blocks, also called nodes, and all the blocks are managed with the help of the block header. Constituents of Block Header are : TimestampVersionMerkle RootDif

Top 10 Programming Languages for Blockchain Development

Do you ever wonder about the sudden emergence and popularity of Blockchain? What is it? Well, Blockchain is literally a chain of blocks as the name suggests! It’s just that the “blocks” in this context are digital information that is connected using cryptography. Each of these blocks contains a cryptographic hash function linking to the previous bl

How Blockchain Technology Can Accelerate the Potential of IoT?

Yes, the blockchain has enormous potential to accelerate the Iot functioning efficiently. Since, security is a major concern with IoT that has hindered its large-scale deployment. IoT devices often suffer with security vulnerabilities that make them an easy target for Distributed Denial of Service (DDoS) attacks.So these are some concern of blockch

Decentralized Voting System using Blockchain

Blockchain is a technology that is rapidly gaining momentum in era of industry 4.0. With high security and transparency provisions, it is being widely used in supply chain management systems, healthcare, payments, business, IoT, voting systems, etc. Why do we need it? Current voting systems like ballot box voting or electronic voting suffer from va

Blockchain Incentives to Miners

A Blockchain is basically a database containing all the important information about the transactions of cryptocurrency, which is very difficult to manipulate. It can be called a Digital Ledger that contains all the information which is decentralized and distributed all across the nodes in the blockchain. Bitcoin is a digital cryptocurrency that use

What is Cryptographic Primitive in Blockchain?

Blockchain is a distributed, decentralized ledger. It comprises blocks connected to one another. Each block comprises information such as transactions and a unique hash. The medium of exchange in Blockchain is cryptocurrency or crypto. What are Cryptographic Primitives?In Blockchains, there are no third parties or Governments involved. It is fully

Benefits of Blockchain in Healthcare

A blockchain is a chain of blocks linked together using hashing technique. Each block consists of some timestamped records of information such as financial, healthcare, confidential data, etc. The Blockchain network is managed by a group of users on a decentralized network. All the information is available on a distributed ledger to all the users f