Blockchain 101 - Part 2 - Public / Private Keys and Signing

Рет қаралды 480,743

Күн бұрын

This is part two in my basic visual introduction to the concepts behind a blockchain. We build on the concepts from the previous video and introduce public / private key pairs and signing using an interactive web demo.
If you missed it, part 1 is here: • Blockchain 101 - A Vis...
If you are interested in playing with this on your own, it is available online at:
anders.com/blockchain/public-p...
The code that runs this demo is also on GitHub:
github.com/anders94/public-pr...
If you want to know more about how public key cryptography works, see the Wikipedia page on it: en.wikipedia.org/wiki/Public-...
The details of how public keys relate to private keys are hard to summarize, but it has to do with Euler's theorem. Basically, using Euler's theorem there is some math you can do to a number given some parameters (which I'll call the public key) which allows someone with some other parameters (which I'll call the private key) to decipher the original number without having to do brute force factorization because there is a shortcut way to find the phi of a prime number. Rather than me butchering the explanation, check this video series out for a more detailed explanation: www.khanacademy.org/computing...
I'm @anders94 on Twitter and @andersbrownworth on Steemit.
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Пікірлер: 576

@DJSlimzilla 5 жыл бұрын

This 2 Part series you've made needs to become the worldwide standard for teaching this subject. No where has anyone I've ever met been able to describe this in such clarity. All that come across your instruction will leave well informed, thanks to your efforts (myself included).

@anders94 5 жыл бұрын

Thanks very much. Much appreciated.

@tomstoj 5 жыл бұрын

Daaaaamn, that's the best explanation of blockchain I've ever seen in my life. Congrats!

@charlesblubaugh946 6 жыл бұрын

great explanation. You should have 1,000,000 views. Thanks

@nickosc88 6 жыл бұрын

Yes, your demonstration and interactive app has explained the BC much better than a lot of other youtube demos. Also, what sparked your interest in Byzantium? I am of Greek background but regardless, it is an era forgotten and under-emphasized in the current Western education paradigm, tres coole!

@whatever2981 6 жыл бұрын

Because "Byzantine generals problem" is the logical basis for reaching the consensus amongst peers (bc miners) where everybody trusts nobody.

@anders94 5 жыл бұрын

@@nickosc88 My brother had studied Byzantium and started telling me about it so we ended up recording a podcast about it (12 Byzantine Rulers) which the New York Times ultimately covered. That turned into a book deal for my brother (Lost to the West) and many other media appearances including the Wall Street Journal, NPR and Wired magazine as well as a show called "Ottoman Rising" which will soon be out on Netflix. (January, 2019)

@delmike2633 4 жыл бұрын

@@whatever2981 *Text Brsmith231 on Instagram. To get your private key.*

@delmike2633 4 жыл бұрын

@@nickosc88 *Text Brsmith231 on Instagram. To get your private key.*

@masknecr 6 жыл бұрын

I watched part1,2, this is so compact and at the same time contains all the core concept of the block chain! Thank you for creating this helped me so much.

@huseyincan6457 6 жыл бұрын

That's weird I just watched Blockchain 101 Part 1 and 30 min later you uploaded Part 2 after 1 year break :) Amazing visualisation. Thanks!

@anders94 6 жыл бұрын

Great timing!

@anders94 4 жыл бұрын

I have had to turn comments off on my blockchain videos due to spam. If you want to reach out to me, please find me on twitter @anders94 instead. Most of the recent comments (which I've been judiciously deleting these past few years) have been people pushing an "I can get your private keys back for you" scam which, as everyone who has watched these videos knows. is quite impossible. I hate to take such a drastic measure but I'm afraid I just don't have the time.

@JuanManuelVillar 6 жыл бұрын

never leave a comment, but i have to congrat you, great work and thank you for the time invested.

@zummotv1013 4 жыл бұрын

can you please explain the verification part?

@delmike2633 4 жыл бұрын

*Text Cloudbase7 on Instagram. To get your private key.*

@delmike2633 4 жыл бұрын

@@zummotv1013 *Text Cloudbase7 on Instagram. To get your private key.*

@listeningears9009 4 жыл бұрын

Best video out there explaining Blockchain, thank you! You're only missing timestamp

@anders94 4 жыл бұрын

Thanks. Yeah, I opted not to add them to reduce complexity and to not have to get into the inaccuracy of the timestamps. But good catch!

@xpressabhi 6 жыл бұрын

I don't usually comment on KZfaq videos. But you have done a hell of a good job in explaining the entire concept so easily. Thanks very much!

@atulkumthekar1666 5 жыл бұрын

I have never seen such an elegant simple and MEANINGFUL demo anywhere. Everyone just talks big, and confuses more! Thanks a ton.

@rmdmrod 6 жыл бұрын

Anders thank you for sharing. Please continue with your series of blockchain explanations. 👍

@icloudtechnologies 6 жыл бұрын

Thanks Anders for such simplified videos (part 1 and part 2). Looking forward to part 3.

@woutermonkhorst911 6 жыл бұрын

Great video again, really helpful! Very cool to see the essence of the blockchain explained in such an easy to understand way.

@arctiggs 6 жыл бұрын

Thank you for both of these videos. They were extremely helpful in grasping the concept of a blockchain. Great use of the demo to help us understand the inner workings.

@Andrew-ig5sp 6 жыл бұрын

This video and part 1 are the videos I send to anyone asking me to explain what a blockchain is. So clear. Thank you for making these!

@puneet1111 6 жыл бұрын

Thank you so much.. This has been the best series for me to understand the basic mechanics of block chain..Much appreciated!

@aion2177 5 жыл бұрын

Saved me 3 days of research. So perfectly explained is crazy. Thank you very very much 🤗😁

@zummotv1013 4 жыл бұрын

can you please explain the verification part?3:36

@Mr25thfret 4 жыл бұрын

@@zummotv1013 magic...

@jdelar50 6 жыл бұрын

Big THANK YOU for your time invested in sharing knowledge. Your clarity is amazing.

@anders94 6 жыл бұрын

A humble thanks - much appreciated!

@delmike2633 4 жыл бұрын

*Text Cloudbase7 on Instagram. To get your private key.*

@radhakannan2075 5 жыл бұрын

I believe visual learning is one of the best methods to understand concepts and thank you so much for investing time and developing stuff for this 2 part block-chain video series!

@diamondwinters5793 6 жыл бұрын

Man free information thank you. I wish other people were like you Sir. Every one else wants something in exchange for knowledge thank you.

@outofbounds9479 6 жыл бұрын

best stuff on blockchain i have seen till now

@thespanishcatschool 6 жыл бұрын

Thank you so much for both these videos. This is the first time I've really been able to get my head around how block chain technology works :)

@binhan6432 6 жыл бұрын

Thank you so much Anders, you make me a total outsider sees hopes in learning and understanding blockchain. and get into the industry!

@elhananben8341 5 жыл бұрын

Wow! Finally someone really explain and exemplify blockchain. Please make a lot of videos!!

@15minfit 4 жыл бұрын

Thank you for your explanation of a blockchain. You are a fantastic communicator and I very much appreciate your efforts in sharing this knowledge! Thank you!

@vittalshenoy 5 жыл бұрын

Thank you for crystal clear explanation. Nowhere will you find such detailed yet comprehend-able video...

@erpu20 6 жыл бұрын

Amazing explanation Anders. Your videos explained the crypto section of a blockchain very well. Thanks.

@mdmeren 5 жыл бұрын

One of the most satisfying and best explanation videos. Thank you.

@tlcd8374 4 жыл бұрын

This is the best video series have seen on this subject.

@books2speech950 4 жыл бұрын

Hi Anders, what great explanation. I will recommend everyone to get started with this video before reading anything.

@abartonkc 6 жыл бұрын

Thank you, this is an excellent nuts and bolts description of a blockchain and how it provides security through signatures.

@kremlinology 6 жыл бұрын

Agree with previous, amazing clarity. You break it down beautifully. Thank you so much!

@vineetahuja1970 6 жыл бұрын

spent lot of time understanding block chain but your video was the best, wish I had seen this first. thank you

@FranklinHarding 6 жыл бұрын

These two videos are so amazing. TYSM for taking the time to make them.

@user-wy8qk1hl8y 6 жыл бұрын

Wow, this is the best explanation I've watched on KZfaq...Thank you!

@ToddVance 6 жыл бұрын

Such a fantastic explanation! The internal signature piece has been alluding me for weeks... Thank you!!!

@YouTubist666 5 жыл бұрын

I may have left a comment before, but this (and part one of this series) is excellently and clearly explained. Thanks!

@cubano1979 4 жыл бұрын

Thanks god for people like you with the patience to teach. Most people knowledgeable in this subject have no idea how to explain it

@momoynihan 6 жыл бұрын

Finally a part 2:) Many thanks for the great explanations in both the first and second videos.

@vamshilove69 4 жыл бұрын

Super awesome and super simple explanation of a seemingly complex topic.. thank you very much for this. Appreciate it.

@chenzur4285 5 жыл бұрын

Andres, I've been dealing with Blockchain technology for quite a while now... your explanation is simple, elegant and clear! thank you very much!

@vjsharma25 5 жыл бұрын

Great explanation Andres!! Even after reading lot of material , seeing this video made my understanding crystal clear!!

@MyDearKyoKun 5 жыл бұрын

Where has this been my whole semester..? Thank you!

@EverydayRoadster 6 жыл бұрын

Best tutorial on blockchain I've seen so far. Thanks a lot.

@jb121993 6 жыл бұрын

Again, a very well orchestrated explanation! Very much like part 1.

@krishnakrishnaswamy5773 6 жыл бұрын

Arguably, the best video I have come across that explains blockchain using simple language. The 2 part introduction could be a course by itself and many would be willing to pay $$ for it.

@musabkara1684 6 жыл бұрын

happy to see you are back

@kamaleshbhowmik7103 5 жыл бұрын

Best Blockchain explanation (Part-2) I've ever seen, thanks for this great video tutorial

@pankajkedia6550 6 жыл бұрын

Thank you very much Anders. This is the best video to understand Blockchain.

@aymanalansari4696 6 жыл бұрын

Your demos are AWESOME! I'm hungry for more! Please don't keep us hanging :')

@luzazn 6 жыл бұрын

Thank you for your explanation it was very clear ! Your clarity is amazing and I can tell that you are helping me with memoire that I writing about Blockchain !

@darpandand 6 жыл бұрын

Both part 1 and 2 are clear with simple examples. Thank you Anders

@kjwenterprises 5 жыл бұрын

Again, masterful presentation and demo!!!! So glad I found you...

@tjambu 5 жыл бұрын

The best and easiest How Blockchain / coinbase chain works. Simple, elegant and relevant. Thank you

@gk2011 4 жыл бұрын

Just wanted to say thank you for this great explanation of this, my group in collage is working on a Block chain project for school and this really helped me explain how it work to them.

@anders94 4 жыл бұрын

Glad it was helpful - thanks for the comment.

@anupambera1068 6 жыл бұрын

Thanks a lot for the brief explanation but it clears the gamut of unknown & unseen concept that's rising fast. Obliged to see more from your end.

@banuprataptanguturi9218 5 жыл бұрын

Awesome and very simplified explanation .Both part 1 and 2 gave me a very good clarity .

@bazilian0 6 жыл бұрын

Brilliant visual explanation. Many thanks for the video and the demo files. This is a great way to explain things to noobs.

@JanHof 6 жыл бұрын

Really clear explanation. Made me understand the blockchain a lot better. Thanks for making these 2 videos

@haiamabdelbaset6678 5 жыл бұрын

So perfect work. interesting, simple and specific explanation you are a brilliant . thanks for sharing this and I hope if there are still more details it will be a pleasure to hear you in a third video.

@onkliros 6 жыл бұрын

Nice explanation of the key concepts around cryptocurrency, including digital signing of transactions, hashing of blocks and linking blocks into blockchains. Thanks!

@RahulMeena-bd3ux 6 жыл бұрын

Thanks Anders your explanation is the best as far as I have seen.

@digredeth 5 жыл бұрын

Perfect. Your explanation about blockchain was exceptionaly clear. Thank you so much.

@vishalpoddar 5 жыл бұрын

thankyou Andrew, it helped me understand blockchain more clearly.

@franciscoseyler 6 жыл бұрын

Very clear step by step explanation. Thanks for making and sharing!

@JerRose5 6 жыл бұрын

Thank you for creating this. It's a very clear and concise explanation.

@ShineVi 6 жыл бұрын

Very interesting and easiest explanation about how works blockchain. Thank you!

@sandeepvlogs5253 5 жыл бұрын

You made blockchain explanation so simple. Great Video

@RealityIsNot 6 жыл бұрын

This is so crystal clear! Please keep posting

@JungranPaintingKim 6 жыл бұрын

Very easy to understand the logic behind blockchain and its security mechanism! Thanks for the efforts~!

@rahuln509 5 жыл бұрын

This is by far the best explanation.

@woobear01 6 жыл бұрын

Ditto what Charles Blubaugh wrote. Best video on the subject I've seen to date. Kudos

@KarthikParthasarathy 6 жыл бұрын

You are the best , best explanation ever part 1 and part 2 . I would be happy to see an explanation how blockchain is used for singularitynet for AI

@balakumaranvenkataraman6358 4 жыл бұрын

Excellent explanation...well structured to make it easy to understand..thanks for this

@tanmoybasak7100 5 жыл бұрын

Amazingly simple and clear representation.. grateful

@grahamlambert4742 4 жыл бұрын

Great explanation, very well put, very informative. Saved me considerable time.

@RahulSharma27 6 жыл бұрын

Never really write comments. But this video really cleared my understanding of Blockchain. Thanks professor

@sejobas 6 жыл бұрын

Very well done, thanks for this comprehensive explanation

@yanni0426 6 жыл бұрын

Thanks very much for this. The best explanation of blockchain ever!

@Lawyerman 6 жыл бұрын

Your Blockchain 101 videos are required viewing for all of my friends who are new to cryptocurrencies whom I am trying to help!

@anders94 6 жыл бұрын

Thanks! Glad it can be useful.

@cunhacas 5 жыл бұрын

Thank you Andres for this amazing explanation...

@saoudsalah1850 6 жыл бұрын

Great explanation. Makes it so simple to understand

@krbkll 6 жыл бұрын

Most Clear explanation ever !!. keep posting please

@ToroMoto 6 жыл бұрын

Clear and concise. Thank you for making this content.

@rinkanidhi 5 жыл бұрын

Thank you so much. just superb. All others, these 2 videos should be the pre-req before diving in the blockchain.

@petar.stoyanov 5 жыл бұрын

Finally it starts to make sense!

@snwalthour 5 жыл бұрын

Exceptionally clear explanation, thank you!

@oleanrobin 4 жыл бұрын

Wow. such a great explanation. Excellent work. Thank you so much!!

@zummotv1013 4 жыл бұрын

can you please explain the verification part?3:36

@MrOthonperez 5 жыл бұрын

Excellent explanation! now I have much more clear idea about what is bockchain and how it works. THANKS

@jeremy8718 6 жыл бұрын

A very nice explanation of PKI. Not an easy concept to cover, but you did it great. Keep up the great work.

@geraldopereira1972 6 жыл бұрын

Excelentes vídeos e ótima esplanação ! Muito obrigado Anders por compartilhar !

@TijoAntony22 5 жыл бұрын

You are amazing Anders! Way to go!

@flamabr 6 жыл бұрын

Very educational. Makes comprehension easy. Thank you

@asbjrngyring108 4 жыл бұрын

Awesome and straightforward explanation. You've gained a new subscriber :)

@vl3906 6 жыл бұрын

Beyond amazing explanation, thanks so much!

@EarthaKiddmore 6 жыл бұрын

This is incredibly clear. Thank you!

@RTorresmx 6 жыл бұрын

The best explanation. Thanks

@pranjalmahajan5 6 жыл бұрын

thank you. only this video could explain me the concept neatly

@eelkolam 5 жыл бұрын

This helped me a lot in understanding the blockchain and cryptostuff! Will share!

@mahzadart 5 жыл бұрын

WOW! I will watch and learn anything you teach even if it is plumbing!