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Learner Reviews & Feedback for Blockchain Basics by University at Buffalo

6,587 ratings
1,633 reviews

About the Course

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....

Top reviews


Nov 18, 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


Dec 24, 2020

A comprehensive and clear course that summarizes the basic concepts to understand blockchain technology. Also, the resources and contents included are very valuables. I totally recommend this course.

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1501 - 1525 of 1,657 Reviews for Blockchain Basics

By Cristina M Y

Nov 8, 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

By Richard M

Aug 21, 2018

I thought there was quite a substantial amount of assumed knowledge and jumping to things that hadn't yet been properly explained. The reading was significantly longer than the estimations suggested. The quizzes were fine but the questions were a bit random - they also need formatting so that "all of the above" options, for instance, don't appear in the middle. I'm also not sure what the value was of the Seeker of Awesomeness lectures - seemed a bit pointless to me. Setting up the final project to an age - instructions could have been a lot clearer and shouldn't require searching through forums to resolve. But it's otherwise reasonably good for a basic introduction to blockchain.

By José M Q S

Sep 30, 2020

Muy buena clase introductoria a este tema, no conocía mucho sobre él y aquí pude entender muchos conceptos que abarca el blockchain, y sobretodo su alcance y que está recién comenzando. El proyecto final, sin embargo, fue muy frustrante, porque estaba pensado para computadores de buena calidad, que pudieran ejecutar una máquina virtual y minar dentro de ella en menos de media hora, además que no sirve hacerlo manualmente en tu computador (es más, yo uso Linux). Tuve que subir los archivos de la página web con las instrucciones, descargarlas en mi computador y ahí modificarlos, porque hubo problemas de compatibilidad entre SOs.

By Partho G

Apr 17, 2021

High level overview of the blockchain and cryptocurrency technology. The explanations or demonstrations aren't top notch, you need to watch the videos multiple times with great concentration to understand fully and sometimes the lecture left you bunch of questions for which I do not find any good answers. Anyways it do touch all the basic topics and I learnt many new things here hopefully the next course will be able to remove all my questions. Anyway only take the course if you are super duper interested in the technology otherwise you wouldn't able to finish it without being bored as hell.

By Sunjay P

Oct 4, 2021

Blockchain and its concepts alone are novel and take getting used to. The course videos unnecessarily use complex words and sentences that make it harder to understand the underpinnings. At times, it feels like academics speaking to academics instead of trying to explain the building blocks of a major disruption in society. The course designers would benefit from the Feynman Technique.

By Angel C C

Nov 1, 2018

It is usual from teachers in the university to record the course as a reading of their lessons. When this happens, you feel that it is better to read a book. So like in other courses, sometimes is a little bit bored and difficult to follow. Should be good to add more and better diagrams and media to explain the lesson and less time with the image of Bina talking.

Anyway, is a good introduction.

By Antti K

Dec 30, 2019

The course provides the necessary basics of the technology called blockchain, and it manages to open important related concepts together with the optional reading materials ( some of which were deprecated and removed from the websites). I'd recommend the course Blockchain Basics for anyone interested in blockchain and the ideas behind it.

By Andrew B

Sep 30, 2021

The course is great, but I think it's very low level and very wordy considering the information has to be processed. I think a better solution is to provide the readings and have users answer more complicated questions related to them. I was also disappointed to find the coding assignment was actually just clicking buttons.

By Shashank S

Apr 7, 2021

Course content is good as it convers the basics. The programming assignment (week 4) is simple but really frustrating from user experience point of view. Content creators should work on that. Discussion forum is already full with the challenges and difficulties, learners are facing while submitting this assignment.

By Renal K

Nov 27, 2021

The course is ok, the main value is in providing links to interesting external articles and in giving the overall structure of which topics to study and in what order. In the course videos the concepts are explained in a very academic language. It looks like the professor is just reading the material on camera.

By Nuno C B

Oct 11, 2021

I took the course already with some basic knowledge, nevertheless i couldn't help to feel a little bit lost with the spoken "jargon" that relates to this technology. I guess for a non tech-savyy, it might be a little hard to grasp anything without the use of more visuals, graphics, visual examples, etc.

By Domenico G

Mar 31, 2020

The Course is well done, all the material (internal and external) al good and very useful.

Just the final exam I think is not calibrated, I think that is better to make a quiz exam rather than a practical exam where the only complexity is to start the VM but after every step is suggest where to click

By Ines F

Feb 19, 2021

The course is a great way to introduce some of the basic and main concepts of blockchain. For someone that hasn't any background on programming sometimes it can get a bit confusing or hard to catch. However, it is a great to way to acquire knowledge on blockchain technology.

By Ivan M S

Oct 7, 2020

I really liked the video lecture! Everything is on top! But there are also many disadvantages: some links to additional materials are no longer valid, the final assignment contains a bunch of errors and lack of documentation. It cannot be completed by 100 points

By Nicolai M

Mar 12, 2022

I liked the extra material that referenced to other blogs and websites and the quizzes after each video.

I think the slides could have been a lot better visually. There was hardly something explained on them but just orally explained. You could do better there.

By James F

Sep 30, 2019

I thought the material was at times rushed, and the last project was too scripted and in fact confusing (why is a DAG being generated if this is an Ethereum course?) There could have been more support to explain what we were doing in the final project as well.

By Gianfranco G

Oct 10, 2020

The videos and quizzes were excellent and easy to understand, but the end course project was a whole different matter. There were so many unspecified conditions needed for the project and there weren't good instructions. It was very frustrating at the end.


Feb 9, 2020

course module is very good but the assingment part is rubbish 5 times i downloaded ethereum.ova but while importing it was not found means its really bad i completed all but due to this technical issue i will not be able to complete the course.

By Anirudh S

Aug 22, 2020

Its a decent course which manages to teach you stuff that you don't know or do know to some extent but what it fails to do is that its a bit fast paced and not elaborate enough since the topics are a little complex to beginners


Dec 18, 2021

The articles included in the course are very informative but detailed explanation in lecture would have been fruitful. Lecture seems to be very concise without explanations where each and every statement is concept in itself.

By shashwat g

Jul 5, 2020

The course was good but the reason to give it 3 stars is that the programming assigment was a bit of complicated to install and no proper guidance was given to install it correctly. Videos could have been bit of simpler.

By Marelf A R F

Jan 7, 2019

Tuve problemas con la ultima tarea dado que el programa que baje de los links dados por el curso no permitia correr el software ethereum.

Con lo anterior, no se dió una alternativa distinta para poder terminar el curso.

By Suchal R

Oct 8, 2018

This course is too basic. Hardly goes over the concepts. The lady barely explains anything. I already knew most of the stuff so I know that others who don't know this stuff would still have no clue at the end of course.

By Holden L

Aug 29, 2019

The course is not organized logically so that it is not coherent and easy for learner to understand as a whole. The assignment is not well design to actually test learner's interpretation on the course knowledge.

By Christian S

Jul 18, 2021

informative; the assignment was a pain to setup. spent way more time on getting the setup to work than the actual exercise. i think it would be helpful to have those in the cloud and accessible to students.