How Bitcoin Works Under the Hood

Lots of demos on how to buy, send, store (hardware, paper wallet). how to use javascript to send bitcoin. How to create Ethereum Smart Contract, much more.

Arabic translation by Ahmad Alloush

Russian caption translation by Alexandra Miklyukova

Italian captions translated by Simone Falcini, 1H5KdCnBooxfqpXtyQBBAKKRU7MkCZCVCe

[cyrusadkisson]

0:10 overview, 1:38 sending money, 3:45 txns and ledger detail, 6:19 complex txns, 7:40 anonymity, 9:20 txn security, 10:50 ordering of txns, 11:02 blockchain, 12:10 crypto hash, 13:37 end of chain insecurity, 14:05 double spend attacks, 16:00 why double spend is hard to pull off, 17:45 mining, 18:30 txn fees, 19:00 mining pools, 21:11 recap

[mridularul]

you're the first person to have explained such a complex system in such a simple way .. thankyou for this vid !

[JanBruunAndersen]

Thank you, thank you, thank you!

Finally an explanation of how Bitcoin works that makes sense for paranoid programmer like me. No hand-waving, no vague references to wallets and apps and exchanges. Just the facts with enough detail to make sense, and without drowning in mathematical details.

[SebastiaanvanderHeide]

Thanks for uploading this, I've been watching quite a bit about Bitcoin and this is the most in depth video I've found yet. Must have taken quite a bit of research to get all of this figured out.

[AppliedScience]

Thank you! This is the clearest, most complete overview of how Bitcoin works that I've ever seen. Nice work, indeed!

[EvilSpeculator]

That was brilliant and in little over 20 minutes answered a ton of questions I couldn't find an answer for in weeks of reading BC related articles/tutorials. Thanks so much for putting this together!

[xGeeFx]

Just a small nitpicky note: Addresses in Bitcoin are not exactly the public key. They are hashes of the public key of an address in base58

[patrik]

Would the successful invention of quantum computing become problematic to bitcoin security?

[Pedro-unmk]

Awesome video-lecture! Even after 8 years, for me, at least, is pure gold still!
To be able to brilliantly summarize the complexity of the subject in 20 minutes, certainly required some 20 x 10^3 minutes of dedication and love to the matter.
Thank you for sharing this masterpiece!
Warmest Regards

[relcluse]

Next time: how Bitcoin works IN the Hood

[ciao]

i'm writing an essay, for my finals, on bitcoin, finally a good resource where all information are gathered, simply, and summarized efficiently :)

[Viemexis]

Best explanation of bitcoin I have yet seen. Explanations either tend to be extremely simplistic (which was nice as an introduction) or extremely long and rambling explanations of cryptography.

[fernandosecchi]

Great video. I've been around bitcoin for a long time. took several courses and nothing have been more revealing than this tutorial.
Probably I have a background already to fully understand it. Any way, sooner or later this video is a must in the comprehension of bitcoin.
My sincere gratitude.

[nicolastaub]

As Dan Kaminsky once said: "The first time you think you understand it, you don't".
I felt exactly the same way, but after following your explanations for a few time, I finally got the principle idea.. :) Thanks for the good explanation! ;)

[mfricke]

This is a brilliant exposition—accurate and brief with not a word wasted. Congratulations (and thanks).

[iSuperGeek]

Simply the best educational video. I've been referring my friends to this video when they ask what Bitcoins are.

[wenwei-li]

Very clear. By the first part of the video, I understand two points about Bitcoin:
a. how one transanction is confirmed;
b. how one person is trusted to own enough bitcoins for payment;

It is a pity that I have no enought time to watch the whole video.Hope I can finish it later.

[imstillwing]

This went way over my head. But I kept listening anyways.

[chopcooey]

omg this system is so intelligent and also great explanation; mind = blown

[surearrow]

If you are no longer confused, then you obviously don't understand bitcoins.