Blockchain 101 - A Visual Demo

This is a very basic visual introduction to the concepts behind a blockchain. We introduce the idea of an immutable ledger using an interactive web demo.

0:00 Intro
0:15 SHA256 Hash
2:18 Block
5:16 Blockchain
9:20 Distributed Blockchain
12:19 Tokens
14:36 Coinbase Transaction

If you are interested in playing with this on your own, it is available online at:

The code that runs this demo is also on GitHub:

I'm @anders94 on Twitter and @andersbrownworth on Steemit.

Donations:
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[bonbonpony]

Why doesn't this have more views? This is the best explanation of blockchain I've ever seen on YouTube. There are many "Blockchain explained" or "Blockchain demystified" videos which are total crap, but this one is golden. Not only it explains the concepts step by step from the grass roots up, but also it is not cluttered with Bitcoin-specific nuances (which is always the problem with other presentations, despite the fact that blockchain can also be used for other purposes than Bitcoin).

[cosmopolitan]

Does youtube have a two thumbs like button for this kind of video?

[boyadeng]

I believe this video is the most vivid block chain introduction so far I've ever seen, so thank you for making it.

[Hari-]

holy mother of god, best blockchain explanation ever!

[nanpanman]

Best blockchain demo I've seen so far. Looking forward to future videos!

[delphi]

Magnificent and simply perfect blockchain explantation. If all teaching videos were like this one, the world would be a better place.

[hacking.society]

this is one of the best explanation I have seen so far. no animation with jingle music.
I am always looking for good blockchain explanation for our podcast and I will definitely consider this one for our next episode.
Just simple and to the point! Thank you so much for this!

[eitan]

i think i saw like 8-10 "what is Blockchain" videos on YouTube.
only with this video i FINALLY understand it...
this is BY FAR the BEST Blockchain explanation video !
Thank you VERY much !

[burky]

Good teachers are rare. Just found one here

[chrisberkvens]

This is, by far, the best blockchain explanation i've seen.
In fact, i keep playing this vid, although i understand it 100%, just for the beauty of it.

[joseluispiedrahita]

Wow, this is the most exquisite explanation I've seen so far on how a blockchain works. Thank you so much.

[TubeFish]

I work as a maths/IT tutor and I will be showing this video to other teachers as a demonstration of effective communication.

[andrewscheepers]

Thank you very much for taking the time to create this easy to understand version of how the Blockchain works. I truly believe it is the best explanation I have seen. Thanks

[luckyfisherman]

I have skimmed almost the whole YouTube. This video is by far THE most concise and clear video that explains exactly how block chain works. Thank you so much!

[chrisdutoit]

Finally, an explanation that makes sense. The actual visualization helped me far better understand this than most other explanations. Thanks for taking the time to do this and making it available to us.

[justinmurberg]

Excellent video. Simple enough that you don't need to know anything about blockchain to follow but technical enough that you can understand the fundamentals behind how a blockchain actually operates.

[joshuafaier]

Wow, having a visual representation makes this so much easier to understand. Thanks for this!

[Masfugo]

This is the best video to understand what is blockchain, what "puzzle" miner actually solve, and how do "difficult adjustment" actually done

Everytime I try to remember what is blockchain I remember this video
thank you very much <3

[tracygilmore]

This is the very best explanation of blockchain, from first principles, I have come across. Well done Anders and thank you for making the source code available.

[JavierAragones]

Thanks so much Anders. I've been reading stuff on blockchain for a week, but you finally made it all fit together.

But know I have a ton of questions on how multiple parties can create new blocks without clashing. Please we need the part II of this video desperately!