The first part of the word “crypto” is short for cryptography. Cryptography is a method of securing information with code between the sender and the recipient. So, cryptocurrency is a digital asset that stores a particular value and uses cryptography as the means to secure it between two parties. Blockchain is the technology that facilitates this transaction.
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Hi, I have one question that it is with me for a really long time now. Is it possible in the future to create a blockchain with thrustless news outlets? The way the blockchain can revolutionise the supply chain is mind blowing. Could you do the same in the news industry? How about getting rid of the fake news once and for all? Is it even possible? How would that work? Is it possible to create a network of nods that would accept only the true information? Thanks.
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That is interesting 
, I think it is doable. The tricky part is when the nodes verifying the source of the news.
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Thanks Maki. I was thinking that maybe it could be connected to something like the decentralised identity solution ( Atala Prism on Cardano for example). A person submitting the new information would have something like a trust rating. I guess this could be still manipulated…hmm
Hi everyone. I’m enjoying this course so far. Loving that when I see my friends talking about crypto like it’s magic beans, I can say to them that it isn’t like that at all. Looking forward to my next one to start building something on the Blockchain.
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Hello Ivan, thanks for the courses till now. They were great and easy to understand the concepts of Blockchain, Cryptocurrency, and others. I love the new techs and want to complete the courses without any discuption, if possible.
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Loving the course & information learnt so far. Have picked up bits & pieces from investing in different crypto companies & researching them but learning more ‘in depth’ about the potential & possibilities of Blockchain is both fascinating & inspirational.
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I’m also enjoying the course. I have a young family and I’m trying to put in as much effort as I can whilst learning all about this fascinating new world we are entering! The more I research, the more I want to know! The short lessons are great for me at the moment.
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Thank you Ivan and team! This course has been easy to follow and understand.
My Fave thus far is Consensus. In fact - how blockchain works overall! This technology is an un-prejudicial community of collaboration. I’m sure given the human appetite for greed, some-one somewhere is formulating a plan to “hack” blockchain’s protocols. But given the nature of “consensus”, it’s pretty infallible (is that an oxymoron?) :}
I’m loving the information shared by some amazing minds here and in the community at large.
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Hello, so far this course is opening my eyes to understand the enormous capability of block chain as a whole. I can’t wait what i will uncover as i get going through this course and other related courses too. thank you
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Ditto, this course is great. 
Thank you so much for wrapping my head around the
material!
I really like your map. I wish you would offer it to ivanontech as an additional guide for reference or refresher. New users should not be allowed to obtain the map until they get their certification for that section because it makes referencing information too easy, therefore it could be counter productive when trying to force the mind to work on remembering new information, unless they are required to fill the map out themselves.
I’m a total noob, and pretty much wanted to start from zero. Thank you for explaining the concepts of blockchain. Much appreciated and looking forward to continue on! Thank you!
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i love the idea of traceability. already thinking of places where I would try to implement blockchain tech!
for example: I thought about the time when our son was testing for his black belt in judo. The documentation portion was really time consuming. There was an element where we had to write down his tournament results and all the training camps that he has attended in the last few years. I thought how it would be if all that information would could have been uploaded into a server and be available to retrieve later. All the results would have been shared among all the judo associations across the country to be easily verified.
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My eyes have truly been opened to the world of opportunities there are when it comes to blockchain technology. From what I’ve learnt so far it is incredible to think of how this technology can be implemented into supply chains in the food industry for example. As a consumer I am very concerned about the ingredients and sustainability of the products I am buying. I want to take out the “trust” aspect of the products I consume and I want solid evidence that what I put in my mouth isn’t going to kill me. I am so inspired and eager to continue with the rest of this course.
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I was already excited about this developing blockchain/crypto space but having access to all this knowledge provided by the Ivan on Tech Academy at my fingertips in an easily digestible format (so far) has gotten me more excited. I look forward to “studying” the topics in my lessons and having all my questions answered. 
Question: Since a blockchain keeps a permanent ledger, can we trace to who is holding the first bitcoin? I’m only asking this because I was wondering about what other specific things can be done from it?
Yes you can trace the coins all the way back to the time they were mined. 
Question: Can smartcontracts be altered or changed? And how to they interact with the ethereum blockchain?
Thanks!
You can change the logic of a smart contract by having a proxy contract where you can update addresses to the contracts that hold the logic. But this technically means you still have to deploy a new contract with updated logic.
Ethereum uses an EVM that has similar instructions than a CPU that executes the contract logic.