Best Blockchain Courses Online 2024

18 Best blockchain courses online. Learn to build your own.

Image Best Blockchain Courses Online To Become A Blockchain Developer

Blockchain is becoming a must-have skill in today’s tech world. Whether you’re building a business or just curious, understanding blockchain could give you an edge as it powers everything from crypto to digital identity.

With blockchain professionals in high demand and top-paying careers, now’s the perfect time to dive in. Whether you’re starting from scratch or looking to expand your skills, check out the best blockchain courses online to jumpstart your journey and career.

Blockchains – Overview

As its name states, blockchain consists of a data set called blocks that are connected or chained with other blocks. Each block works as an individual database that is encrypted with advanced hashing, making it extremely secure (at least for now).

What sets blockchain apart is its decentralized structure. It operates on three key technologies: cryptographic keys, a peer-to-peer network that shares ledgers, and computing resources that combine to create a globally distributed database. It’s a complex but highly secure system that’s changing the way data is stored and shared.

Careers – As blockchain technology evolves, roles like Blockchain Developer, Blockchain UX Designer, and Blockchain Legal Consultant are in high demand. But it’s not just about career opportunities. Understanding blockchain also offers insights into trends like AI and autonomous systems, enhancing our professional skills, digital lives, and financial well-being.

What to learn – Many blockchain courses focus on concepts, use cases, mechanisms, and future trends. However, to become a developer or analyst, you’ll need a career track or certification, which takes time and effort. These courses often require a strong foundation in Python, JavaScript, SQL, and STEM knowledge as prerequisites.

Use cases – Blockchain can be applied across a wide range of industries, including product development, business operations, financial services, and verification or identification processes. The courses below focus on building developer skills. If you’re interested in crypto investing, check out our list of the best cryptocurrency courses.

Best Blockchain Courses Online 2024 – Top Picks

UdacityMIT, GetSmarterBlockchain CouncilCoursera
Logo Image of Udacity Blockchain CoursesImage Blockchain Technologies: Business Innovation and Application – MIT, GetSmarterImage Certified Blockchain Expert - Blockchain CouncilImage Blockchain Specialization - University of Buffalo, Coursera
Blockchain DeveloperBlockchain TechnologiesBlockchain ArchitectBlockchain dApps
from $249from $2,800$249$59/month
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*Disclaimer: This post contains affiliate links. Read the full disclosure at the end of this post.

1. Become a Blockchain Developer – Udacity Nanodegree

Image Blockchain Courses Online - Become A Blockchain Developer Certification, Udacity

Udacity offers this popular nanodegree (visit website) to become a blockchain developer. The program teaches you the fundamentals of blockchain and the methods and guides to create decentralized apps (dApps). Students will also learn to interact and develop smart contracts using Solidity to explore the opportunities and benefits of the Ethereum platform.

However, enrolling in this nanodegree requires students to have more than one year of experience in object-oriented programming, along with hands-on experience in developing web-based applications with JavaScript using node.js and more.

Although this program has a longer list of prerequisites, it will guide you step-by-step on building decentralized apps that perform actions on external triggers and can handle payments. Upon completion, students will be able to progress their career as a blockchain developer professionally for which they will also get a certificate.

Given the great expertise of the instructors, career support and advice, this is one of the best blockchain courses online for intermediate and advanced professionals willing to invest more money but also wanting an almost certain job guarantee once completed.

Instructors: Brandy Camacho, Jessia Lin | Capstone: Yes
Prerequisites: Object-oriented programming
Info: Visit Website. From $249. Get up to 75% off. Includes certificate.

2. Blockchain Technologies: Business Innovation and Application – MIT Sloan

Image Blockchain Courses Online - Blockchain Technologies, MIT, GetSmarter

This popular MIT blockchain course (visit website) discusses the applications of blockchain technology in business. It is aimed at leaders and managers wanting to expand their understanding of the application of blockchain in an economic setting.

Drawing on the work of the leading MIT faculty and crypto-economics experts, this blockchain certification will take learners through six different modules. In the first module, you will acquaint yourself with the fundamentals of blockchain technology. This will be followed by a discussion on Bitcoin and the curse of the double-spending problem.

The third module deals with costless verification followed by the concept of bootstrapping network effects through blockchain. From here, individuals will learn how to use tokens to design new types of digital platforms before finishing off with a discussion on the future of blockchain, AI, and digital privacy.

By the end, you’ll gain a deep understanding of how blockchain reduces networking costs and powers apps like Bitcoin and other token-based ventures. As part of MIT’s prestigious educational offerings, this is one of the best blockchain courses online for those looking to professionally explore the business side of blockchain technology and its transformative potential.

Subject: Blockchain Application | Duration: 6 weeks | Certificate: Yes.
Level: Intermediate | Price: $2,800 | Discount 15%: GS-AF-LEARN15
Info: View course. Get free prospectus. Browse all courses.

3. Certified Blockchain Expert – Blockchain Council

Image Blockchain Course - Certified Blockchain Expert - Blockchain Council

The Certified Blockchain Professional Expert (visit website) provides an in-depth overview of the fundamentals, features, applications and benefits of blockchain technology. Overall, the main goal is to equip students with the practical skills to confidently navigate the blockchain landscape and open up new career, business, and investment options.

This blockchain certification program supplies you with extensive materials to help you understand the technology and its implications for businesses and the world of finance. It also delivers insights into the various use cases of blockchain and cryptocurrency.

Diving deeper into the program, students will understand the components of blockchain technology, such as cryptography, tokenization, mining, consensus algorithms, smart contracts, cryptocurrency wallets, and distributed ledgers. Understanding Blockchain security, scalability, privacy, and governance is also an important part of the curriculum.

To complete the course successfully with a CBPE blockchain certification, learners take part in an exam to test their knowledge. This blockchain certification program shows their expertise in blockchain technology and may open up a range of job opportunities such as blockchain architect, blockchain project manager, or blockchain consultant.

Provider: Blockchain Council | Path: Beginners to Intermediates
Time: 8 hours | Certificate: Online Exam | Rating: 4.8 ★★★★★
Info: View course. $249. Self-paced class. Browse all blockchain certifications.

4. Blockchain and Cryptocurrencies – Berkeley, Emeritus

Image Blockchain Applications + Trends - Berkeley, Emeritus

Berkeley’s Blockchain and Cryptocurrencies (visit website) is aimed at professionals who want to learn to apply blockchain technology to their organization and job. The pertinence of blockchain technology in today’s digital world makes it suitable for business strategists, finance professionals, entrepreneurs, tech consultants, and many others.

No matter what field you’re in, you’ll learn how to maximize the impact of blockchain across different industries, bearing in mind the regulations surrounding this technological space. In addition to a theoretical crash course on the crypto network, you’ll examine how Visa, Maersk, and Walmart use blockchain to cut costs and expand into new markets.

As technology is fast-changing, the course dedicates an entire module to the three major emerging trends in blockchain and crypto: DeFi, DAOs, and NFTs. While this course may instinctively appeal to private sector professionals, public servants shouldn’t be quick to dismiss its value, as it covers the best practices in leveraging blockchain for social good.

A capstone project invites participants to create a cryptocurrency wallet, add funds to the wallet, and create their own cryptocurrency and NFT. To earn a certificate from UC Berkeley Executive Education, participants need to complete the capstone project and 80% of the required activities, after which they’ll get alumni access to Berkeley’s network.

Provider: Berkeley ExecEd, Emeritus | Time: 6 months | Certificate: Yes.
Level: Professionals | Type: Blockchain certification | Price: $2,600
Info: Visit course website. Get free brochure. Browse full course catalog on Emeritus.

5. Blockchain Specialization – Coursera 

Image Blockchain Courses - Blockchain Course Specialization, Coursera

Coursera’s Blockchain Specialization (visit website) contains 4 courses that start with the basics of Blockchain principles and the Ethereum platform. This aims to lay the foundation necessary to build decentralized blockchain applications and programming.

The next modules are about creating and testing smart contracts with Solidity and deploying them in the Remix development environment. The second chapter is all about creating smart contracts that will result in autonomous, efficient, and transparent systems.

While the third module teaches about developing decentralized blockchain applications (dApps) using Truffle Ide, the last class is about alternative blockchain platforms that include alternative decentralized models like IPSF and Hashgraph.

By the end, individuals can progress their careers as blockchain developers by applying with the certificate to potential employers. This is still one of the best blockchain courses available on Coursera and is suitable for intermediate students. Knowledge of at least one high-level programming language is a requirement to enroll in the class.

Duration: 4 months | Instructor: Bina Ramamurthy
Pricing: Free audit. $59/month with certificate. | Review: 4.6 ★★★★☆
Info: View Course. BrowseSearch all related courses on Coursera.

6. Certified Enterprise Blockchain Professional (CEBP)

Image Blockchain Courses Online - Enterprise Blockchain Professional - 101 Blockchains

The Certified Enterprise Blockchain Professional (visit website) is perfect for individuals who already have a foundational understanding of blockchain technology and its economic ecosystem. This course allows students to deepen their knowledge by exploring how to implement blockchain using a variety of transformational tools.

CEBP guides learners through the various ways blockchain technology is impacting enterprise imperatives. As part of this course, individuals will learn how to engage with enterprise executives pragmatically and come up with practical and effective solutions.

Split into 5 modules, this career track will take you from the fundamental concepts of blockchain to the various use cases. Along the way, you will learn about the numerous enterprise blockchain platforms, blockchain in trade finance, and its applications.

By the end, you’ll have the skills needed to advance your journey toward becoming a blockchain expert. This best-rated blockchain course is perfect for those with an entrepreneurial mindset, eager to implement blockchain technology.

Provider: 101 Blockchains | For: Professionals | Certificate: Yes
Price: $499 with certification. For discounted course membership plans look here.
Info: View course page. Browse category and related courses.

7. Certified Blockchain Developer – Blockchain Council

Image Blockchain Courses - Certified Blockchain Developer - Blockchain Council

The Certified Blockchain Developer course (visit website) by Blockchain Council is a great window into understanding blockchain technology. The class teaches students the skill set to become developers on a blockchain of their choice or to develop their own businesses.

Through this comprehensive, exam-based program, learners have the opportunity to explore a wide range of blockchain topics, from public and private key training to Merkle trees and hashing. As you work towards certification, you’ll also gain expertise in the Ethereum network, IPFS, Hyperledger, and R3 Corda—particularly how to apply Ethereum smart contracts on Hyperledger Fabric.

Upon completion of modules, you will also have a chance to have hands-on experience developing on a blockchain. It is one of the best blockchain courses online for someone looking to become a backend developer, front-end developer, or database administrator. This class is a beneficial stepping stone to implementing your project on any blockchain.

Level: Beginners, Intermediates | Class Time: 15 hours
Class Time: 15 hours | Certificate: Online Exam | Rating: 4.8 ★★★★★
Info: View course. $299. Self-paced class. Browse all blockchain certifications.

8. Professional Certificate in Blockchain Fundamentals – Berkeley, edX

Image Blockchain Courses Online - Blockchain Fundamentals Certification, Berkeley, edX

Blockchain Fundamentals (visit website), authorized by the University of California, Berkeley, offers a comprehensive look at both the technical and non-technical aspects of blockchain. Over 3 months, students will not only understand real-life blockchain applications but also gain hands-on experience by building their own blockchain.

Throughout the course, students will dive into the Ethereum blockchain, learning to create smart contracts, and explore Bitcoin’s proof-of-work consensus algorithm, key pillars in blockchain technology.

This course is designed to accommodate learners from all backgrounds, making it accessible for both beginners and those with prior technical knowledge. Upon completion, students earn a professional blockchain certification, empowering them to showcase their skills and advance their careers by demonstrating an in-depth understanding of blockchain.

Provider: University of California, Berkeley, edX | Certificate: Yes
Duration: 3 months. 3-5 hours/week
Info: View course. $198. Discount available.

9. Blockchain A-Z – Build Your First Blockchain – Udemy 

Image Blockchain Courses Online - Blockchain A-Z: Build First Blockchain, Udemy

Blockchain A-Z: Build Your First Blockchain (visit website) offers a solid introduction to blockchain technology. Students will grasp essential concepts and take the first steps in coding, learning to write blockchain code line-by-line.

By completing the course, students will not only understand the theory behind cryptocurrencies and blockchain but also gain hands-on skills to build a blockchain or create smart contracts. If you’re someone who prefers taking action over passive listening, this course offers practical guidance with support from professional data scientists along the way.

While the course prepares students for a career in the blockchain industry, the theory-heavy sections can feel long and dry. Additionally, the course misses a deeper dive into proof of stake and its implementation, leaving a gap. Nonetheless, it’s still one of the best blockchain courses online for beginners on Udemy.

Instructor: Hadelin de Ponteves, Kirill Eremenko | Level: Beginners | Lectures: 98
Video: 14.5 hours | User Rating: 4.6/5 ★★★★☆
Info: View course on Udemy. From $29.99. Browse all classes.

Tip: To explore more certifications in technology, browse our lists of best fintech courses or Udacity nanodegrees, or Metaverse courses or NFT courses or Web3 courses.

10. Certified Blockchain Architect – Blockchain Council

Image Blockchain Courses - Certified Blockchain Architect - Blockchain Council

Certified Blockchain Architect by Blockchain Council (visit website) is made for enthusiasts interested in creating blockchain-based solutions for corporations and enterprises. This Blockchain certification program will teach you how to transform business needs into technical specifications and gauge the solutions’ parameters.

By the end, you’ll be equipped to make sound decisions while meeting challenges and adhering to non-functional requirements. The course spans six lessons, covering everything from blockchain basics to innovative solutions, concluding with a certified blockchain architecture exam.

Module 3 teaches the most prevalent tools required when dealing with blockchain architecture. Students learn about the additional technologies supporting the blockchain, cryptography and blockchain algorithms, blockchain functional architecture, etc.

Once past this milestone, you’ll start developing your own network nodes, understand the technical components of blockchain architecture, and architect your own solutions.

The final module deals with advanced blockchain solutions including storage platforms, sidechains, layer-2 scaling solutions, oracles, interoperability, and identity management. This is one of the best blockchain courses online to start a career in Web3 development.

Provider: Blockchain Council | Path: Beginners to Advanced
Time: 12 hours | Blockchain Certification: Online Exam | Rating: 4.8.
Info: View course. $349. Self-paced class. Browse all blockchain certifications.

11. Certified Enterprise Blockchain Architect (CEBA)

Image Blockchain Courses Online - Enterprise Blockchain Architect - 101 Blockchains

Certified Enterprise Blockchain Architect (visit website) is an advanced-level course for individuals who already have a sound grasp of blockchain concepts. Participants will learn about the use cases of blockchain technology and the requirements when choosing the right blockchain for the customers. Learners will acquire an industry-leading blockchain architecture certification.

Produced by 101 Blockchains, this blockchain certification is for aspiring blockchain developers, technology-focused engineers, and IT professionals. It will help learners accumulate the kind of skillset needed to cater to large VARs, vendors, and integrators.

Upon enrolling in the course, students will find a total of five modules to complete. The first module introduces blockchain fundamentals. Next comes the enterprise blockchain platforms followed by a deep dive into the Ethereum Overview. Modules four and five will deal with the technical aspects of the hyperledger fabric and R3 Corda.

Students will also be assisted by a weekly training spreadsheet, email guidance, and Premium support. This is a suitable blockchain course for those aiming to become certified enterprise blockchain architects.

Provider: 101 Blockchains | For: Professionals | Certificate: Yes
Price: $499. Or, $75/month with access to all classes. For membership plans look here.
Info: View course page. Browse category and related certifications.

12. Blockchain Fundamentals – Pluralsight 

Image Blockchain Courses - Blockchain Fundamentals, Pluralsight

This might be one of the best blockchain technology courses online for beginners without a strong career goal yet but willing to test, try and continue. It will teach you how to develop blockchains with a focus on the Ethereum platform. Though for beginners, students should have a basic understanding of the common programming languages.

Within 2.5 hours, you can learn how to develop a smart contract, a simple app, work on DAPP development, and create your own private Blockchain. You can start a free 10-day trial of 10 days to check out the course before combining it with a skill track on Pluralsight.

Instructors: Jan-Erik Sandberg | Duration: 2.5 hours | Platform: Pluralsight
Level: Beginner | Price: View course. $29/month. Get free 10-day trial.

Popular platforms: Browse our lists of the best Coursera courses or Harvard courses or MIT courses or GetSmarter courses or edX courses to further improve your skills.

13. Certified Enterprise Blockchain Security Expert (CBSE)

Image Blockchain Courses Online - Blockchain Security Expert - 101 Blockchains

Certified Enterprise Blockchain Security Expert (visit website) is a self-paced course to develop a professional understanding of blockchain security threats. By the end, you will be able to perform blockchain threat modeling and vulnerability assessments. Students will also learn how to design and develop secure blockchain systems and distributed applications.

Upon enrolling in this blockchain development course, learners build a solid understanding of both the theoretical and practical understanding of the blockchain security system.

The blockchain certification program takes learners from the fundamental security concerns to the more advanced concepts of blockchain node and network security, smart contract security, testing blockchain systems, and enterprise blockchain security. Users also learn about blockchain threat modeling, fundamental blockchain cryptography, etc.

if you are interested in a career that focuses on the security aspects of blockchain, this is among the most popular blockchain online courses to be shortlisted.

Provider: 101 Blockchains | For: Professionals | Blockchain Certification: Yes
Price: $499. Or, $75/month with access to all classes. For membership plans look here.
Info: View course page. Browse category and related courses.

14. Online Degree Blockchain for Business

Image Blockchain Courses - Online Degree Blockchain for Business, Blockchain Council

Blockchain for Business (visit website) is an online degree offered by the Blockchain Council to deepen students’ understanding of complex blockchain concepts, principles, and business applications of the blockchain in society.

The various classes and modules cover a plethora of topics, including technology, business use cases, comprehensive historical overviews of different blockchains, and an analysis of the spectrum of unique blockchains that are now being deployed.

Only 7 hours in length, this blockchain certification suits someone who already has a good understanding of crypto and blockchain, but is seeking the credentials to possibly work in the industry. A list of specific jobs where this certification could be useful features bankers, data analysts, entrepreneurs, government officials, and recruitment specialists.

Some alumni of this program have also gone on to pursue careers in healthcare, manufacturing, real estate, the education sector, and entertainment/gaming. Learners receive lifetime access to study materials and 24/7 online assistance. Overall, it’s one of the best blockchain courses online to explore the business prospects of blockchain.

Path: Intermediate | Time: 7 hours | Certificate: Online Exam
Info: View course. $499. Self-paced class. Browse all classes and certifications.

15. Blockchain Certification Training – Edureka

Image Blockchain Courses - Blockchain Certification Training, edureka

Although the course (visit website.) refers to Blockchain Certification Training Course, the class focuses on Bitcoin and Ethereum. You can learn from mining your Bitcoin to trading the Bitcoins by creating a private Bitcoin wallet.

Besides, users will learn to develop their private blockchain on a multichain platform and deploy smart contracts on Ethereum. Three capstone projects focus on developing a property transfer model via smart contracts, an online jewelry application using Solidity and a KYC prototype to summarize everything learned from the blockchain course.

As a prerequisite, knowledge of object-oriented programming languages and basic Networking, and Linux knowledge would be helpful. To design the front end, one might also need some understanding of Javascript and web3.js.

Provider: Edureka | Courses: 11 modules | Time: 6 weeks | Certification: Yes
Interactive Hours: 250 hours | Capstone: Yes | Cost: $399. View website.

16. Professional Certificate in Blockchain for Business – edX 

Image Blockchain Courses - Blockchain for Business Certification, Linux Foundation, edX

If you are looking for online blockchain courses to help you set up and use the technology in your business, this professional certification (visit website) by the Linux Foundation is a great choice. It’s a self-paced class that requires 2-3 hours of studying per week.

Within 6 months, you will gain knowledge on how blockchain can change the perspectives of businesses and how to add distributed ledger technology to a business if needed.

Although the course doesn’t provide any technical and programming guides, it covers the overall impact and potential of blockchain worldwide. After completing, professionals can make better decisions on how their business will benefit or not from the use of blockchain technology. However, you will still need a developer to turn your ideas into practice.

Provider: Linux Foundation, edX | Courses: 2
Duration: 6 months. 2-4 hours/week | Certification: Yes.
Info: View course. Approx. $348. Discount available.

17. Learn The Basics of Blockchain with Python – Codecademy 

Image Blockchain Courses - Blockchain with Python - codecademy

Although the course mentions Python, it doesn’t require any prior knowledge of blockchain programming and Bitcoin. However, if you have a basic knowledge of Python, it will certainly flatten your learning curve. This is a compact online blockchain course covering the elements that provide security between different blockchain products. You will also learn to create and tamper with your private blockchain via interactive simulations.

The course is suitable for students with a technical background and focuses majorly on the blockchain programming part. An understanding of Python libraries would help students understand blockchain libraries better and interact with blockchain functions. To learn Python you can check out our list of best Python courses online here.

Prerequisites: None | Duration: 2 hours | Certificate: Yes.
Level: Beginners | Price: Pro. from $26.99/month. Access to all online courses.

18. Become a Blockchain Developer – Educative

Image Blockchain Courses - Become a Blockchain Developer, educative

Before you enroll in this online blockchain training program provided by Educative, make sure you already have adequate programming knowledge. This blockchain online course pitches perfectly for engineers who want to start their careers in this industry.

The online blockchain course explores Hyperledger Fabric Technology using IBM within its system. On completion, individuals know to deploy their blockchain networks and create a blockchain application that will invoke their chain code running in a fabric network.

Overall, the blockchain certification course offers students the basics of Bitcoin and Hyperledger Fabric concepts in their all-text course. Yes, you have read that right; this course comes in an all-text format aiming to learn more from the class in less time. You decide if that is true.

Content: 31 Lessons, 12 Quizzes, 12 Playgrounds | Time: 6 hours Certificate: Yes. | Level: Beginners | Price: from $14.32/month. Access to all courses.

How To Choose The Best Blockchain Online Course

Image Learn blockchain - Best courses


Understanding where you are now and where you want to be can be the first step in selecting the right blockchain course to meet your educational goals. There are other factors to consider before making your choice.

  • Class requirements (informational/technical/ business)
  • Course length and time commitment (total duration and hours per day/week/month)
  • Course fees and/or subscription plans

If you are a beginner and want to test the waters first, you may not want to commit to a longer course path that takes months to complete and offers an advanced syllabus. More compact courses can cover topics in a short time frame, enough to test try a platform or the vibe of a longer and more expensive career track.

If you’ve been in a tech-related field for a while and have clear career goals, it’s probably best to choose blockchain courses that offer a recognized certificate upon completion. Nanodegrees, career tracks, or specializations are great options.

In my experience, student and teacher support are also key here, and it is worth spending the money to enjoy a productive learning environment and expertise.

Summary

In a nutshell, just remember this “It’s never too late to start”. Having said that here are a few things that are worth knowing before enrolling in any blockchain online courses:

  • Nothing changes if you don’t implement what you learn
  • Most blockchain certifications will only provide you with a guide and teach you technical skills. It’s you who have to push your newly learned skills to new levels and apply them to projects.
  • Blockchain is the second-largest growing industry in the world right now. So it’s probably worth the hassle.

In general, look for those blockchain online courses that best suit your learning requirements. To make things easier for you, if you are a beginner and still in doubt, I would recommend Blockchain A-Z™: Learn How To Build Your First Blockchain as it provides optimum knowledge to start as a beginner, and it is affordable.

Udacity on the other hand is the platform to go to when you want to start a career and need proper, guided education and not just a self-paced online blockchain training course.

Best Blockchain Courses Online 2024

  1. Become a Blockchain Developer – Udacity Nanodegree
  2. Blockchain Technologies: Business Innovation and Application – MIT Sloan
  3. Certified Blockchain Expert – Blockchain Council
  4. Blockchain Applications and Trends – Berkeley
  5. Blockchain Revolution, Specialization – Coursera
  6. Certified Enterprise Blockchain Architect (CEBA)
  7. Certified Blockchain Architect (CBA) – BC
  8. Professional Certificate in Blockchain Fundamentals – edX
  9. Certified Enterprise Blockchain Professional (CEBP)
  10. Certified Blockchain Developer – Blockchain Council
  11. Blockchain A-Z – Build Your First Blockchain – Udemy
  12. Blockchain Fundamentals – Pluralsight
  13. Certified Enterprise Blockchain Security Expert (CBSE)
  14. Blockchain Course Specialization – Coursera
  15. Blockchain Certification Training – Edureka
  16. Professional Certificate in Blockchain for Business – edX
  17. Advance Your Skills In The Blockchain – LinkedIn Learning
  18. Blockchain for Business – Udemy
  19. Ethereum Blockchain Developer Bootcamp – Udemy
  20. Learn Blockchain Basics with Python – Codecademy
  21. Become a Blockchain Developer – Educative

Blockchain FAQs

If you are an absolute beginner, here are some interesting FAQs to get things started. You will come across these concepts in any of the mentioned online blockchain courses.

What is a blockchain?

A blockchain is a decentralized and distributed digital ledger that records transactions across multiple computers. It ensures transparency, security, and immutability of data through cryptographic techniques. Blockchains operate through a network of nodes that validate and record transactions in chronological order. Transactions are grouped into blocks, which are linked together using cryptographic hashes, forming a chain of blocks.

What is decentralization in blockchain?

Decentralization means that no single entity has complete control over the blockchain network. Instead, control is distributed among many participants (nodes), enhancing security and reducing the risk of a single point of failure.

What is a smart contract?

A smart contract is a self-executing contract with the terms of the agreement directly written into code. Such contracts automatically execute actions when predefined conditions are met, without the need for intermediaries.

What is proof-of-work (PoW)?

Proof-of-Work is a consensus mechanism where participants (miners) solve complex mathematical puzzles to validate transactions and create new blocks. PoW requires significant computational power to ensure network security.

What is proof-of-stake (PoS)?

Proof-of-Stake is a consensus mechanism where validators are chosen to create new blocks based on the amount of cryptocurrency they hold and are willing to “stake” as collateral. PoS is more energy-efficient compared to PoW.

What is a consensus algorithm?

A consensus algorithm is a protocol that ensures all participants in a blockchain network agree on the state of the blockchain. It determines how new transactions are validated and added to the ledger. Examples include PoW, PoS, and Delegated Proof of Stake (DPoS).

What are the limitations of blockchain technology?

Blockchain faces challenges such as scalability (processing a high number of transactions), energy consumption in PoW, privacy concerns in public blockchains, and the potential for forks (divergent paths in the blockchain due to disagreements).

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What are the best blockchain courses online? What is your learning experience? If you have taken any of the courses above and entered a career in the industry, please share your experience below.

Alternatively, you may suggest other resources that we’ve missed listing in this review.

Sources: What is Blockchain? – 1 | What is Hyperledger? – 2 | Defintion Peer-to-Peer? – 3

Disclosure: This site contains affiliate links. courselounge may receive a commission for purchases made through these links. It does not add any extra costs. All reviews, opinions, descriptions and comparisons expressed here are our own. 

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