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Comentários e feedback de alunos de Blockchain Basics da instituição Universidade de Buffalo

5,144 classificações
1,291 avaliações

Sobre o curso

This first course of the Blockchain specialization provides a broad overview of the essential concepts of blockchain technology – by initially exploring the Bitcoin protocol followed by the Ethereum protocol – to lay the foundation necessary for developing applications and programming. You will be equipped with the knowledge needed to create nodes on your personal Ethereum blockchain, create accounts, unlock accounts, mine, transact, transfer Ethers, and check balances. You will learn about the decentralized peer-to-peer network, an immutable distributed ledger and the trust model that defines a blockchain. This course enables you to explain basic components of a blockchain (transaction, block, block header, and the chain) its operations (verification, validation, and consensus model) underlying algorithms, and essentials of trust (hard fork and soft fork). Content includes the hashing and cryptography foundations indispensable to blockchain programming, which is the focus of two subsequent specialization courses, Smart Contracts and Decentralized Applications (Dapps). You will work on a virtual machine image, specifically created for this course, to build an Ethereum test chain and operate on the chain. This hands-on activity will help you understand the workings of a blockchain, its transactions, blocks and mining. Main concepts are delivered through videos, demos and hands-on exercises....

Melhores avaliações

18 de Nov de 2018

This is an introductory course to Blockchain. The supplemented material (in other words self-study) is excellent and in my opinion is the only way to master the concepts and details of this discipline

29 de Jul de 2019

Comprehensive and clear course that summarize the basic concepts to understand the blockchain technology. Also the resources and contents included are very valuables. I totally recommend this course.

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1151 — 1175 de 1,290 Avaliações para o Blockchain Basics

por SHRE A R

4 de Mai de 2021

Good course

por Ritik G

25 de Set de 2020

Nice Course

por Amana R

4 de Set de 2020

good course


19 de Jun de 2020

nice course


6 de Jun de 2020

nice course

por Alpana M

1 de Mai de 2020


por Sagar K

3 de Mar de 2019

It was good

por Alexander S

17 de Jul de 2018

Very good.

por Anup K P

4 de Out de 2020


por Ignacio Z

4 de Dez de 2020


por Aniketh S

4 de Mar de 2021


por S R A

22 de Jan de 2021


por Abu S A 2

2 de Out de 2020


por Prashant K M

25 de Jul de 2020



17 de Jul de 2020


por Anushree H P

12 de Jun de 2020


por Priyadhara P S O

19 de Mai de 2020


por boulealam c

14 de Mai de 2020


por asha k

5 de Mai de 2020


por Bidyut B D

30 de Dez de 2018


por Jean-Alexis A

19 de Mai de 2020

• Videos: not too bad, but clearly too short! The amount of videos could be at least doubled, with additional explanations, visuals, examples, etc. We call here "weeks" something that can easily be achieved in less than 1 hour. One Coursera certificate for a few hours of browsing the Internet? That's not PoW! Also, it feels I spent most of my time reading external resources.

• External content and reading: is always marked "optional", when it shouldn't. This is the only way to learn something and understand this course, and the answers to quizz questions can be in the external content. The links sometimes don't even match the order of the course. In addition to that, the time to read (10 min, 15 min) is often underestimated.

• Quizzes: are trivial. I could have finished the course by simply clicking "Next" all the time. Would it be complicated to add more questions (at least triple the number), and increase the relevance and level of difficulty? The time to complete (30 min) is overestimated (should be 30 seconds in some cases). The final assignment is relatively easy.

In short I would have expected more videos and original content, less readings (or only as further readings), decent quizzes.

I would strongly advice to follow the following course (in complement of the "Blockchain Basics" one):

por Muhammad A S

26 de Ago de 2018

I am disappointed with the depth and quality of this course, which is a shame because I think the instructor is quite knowledgeable about the subject and the VM prepared for the lab assignment by the course team is of very good quality. The things which were below my expectations include the following: (1) Very bad subtitles and transcript; sometimes even completely opposite of what the instructor is trying to say, (2) Several times concepts are discussed as if they have been covered in an earlier lecture and then we come to know that they would be in a future course. At least some basics should have been covered. For example, on block hashes, the lecture discusses receipt hash and transaction root hash without telling what they are. (3) The final assignment was just click, click, click and submit. The purpose of an assignment is to get people's mind working so that they develop an appreciation of what they are learning. Instead of just point, click and submit, there should have been some "assignment" in there.

I am keen to take more courses of the specialization, but for everyone else taking this course, I have to say that it's not deep enough. But there are very few in-depth courses available on blockchain and perhaps this is (unfortunately) the best one at the moment.

por Nihan G

4 de Abr de 2021

I took a lot of courses about Blockchain. This course looked promising to get into some application details but in reality unfortunately it was just painful. The last assignment project was a waste of time and energy trying to solve the problems/errors that have occurred during installation which are not mentioned by the course.

The file that course is providing 'Ethereum Ubuntu. ova' is not working properly on a Windos OS. I think the problem here is the technology develops very quickly and these documentations are already out of circulation.

Well, maybe I did not try hard enough. There was hundreds of similar complaints in the discussion forum. There was only one 'so called' solution post by a voluntary peer which did not work either. So for the first time, I give up this course assignment. IT is sad that I won't be able to take its certificate. I tried to reach someone who can help but it was not possible. Now I don't have time to fix course mistakes here so I continue with other resources and courses without fully completing this one.

The information was expanding my knowledge. 3 stars for that. Thank you!

por Ytsen d B

22 de Ago de 2019

It is really a beginners course, maybe that is why some things bothered me more than they should. But I found the lady speaking way too fast and her accent seemed to swallow up the next-to-last syllable, which made her rather hard to understand. It was also disappointing that at least 4 links in the resources were broken. Apart from that, I got the impression that there was very little video material and a lot of "resources"; of course it is easy to string together a bunch of web sites and call it a "course". And then, in the final project, there is this virtual machine that you have to use, which includes a 5 second wait after every action you take. These 5 second become VERY LONG after a while and completely discourage some venturing on your own. They will use that thing again in a later course, I'm not looking forward to that.

por Cristina M Y

8 de Nov de 2018

The lectures are great and the teacher explains all the concepts very clearly but also in a concise way. However, the final assignment is painfully time-taking for the little you learn with it. You will freak out to get your normal use computer to go through ether mining though a Virtual Machine and after hours of invaluably spent time and headaches you'll have learned almost nothing because the only thing you need to do is clicking on the different buttons that come up. I understand what tries to be taught with this assignment and it is nice to have "mined" and "transferred" some bitcoin, but the learning outcome is by no means worth the time it takes. Very frustrating experience, unless you really need the certificate, I would recommend to just listen to the videos in the audit mode of the course