Blockchain 101 - A Visual Demo

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.

love it, but why not just start new blocks? ( i have 100000000): how start?

Terrific!

i have this code but i don't know how i run the code
i have taken the code in git hub

millions of millions like for this video. Thank you so much!

Where can i find more quality content like this? Im looking for good course for a computer science engineer, a technical course. Not something like "blockchain is taking over the world". I wanna know how it works and how to develop things with it.

the best one!

Very helpful. Thank you for the effort!

Awesome Video, can you say which language that was written in?

What does a "signed block" mean? Does it mean mined block?

Even if I'm not a native speaker this is the best explanation I have ever received. Your ability to explain complicated things in such a simple way is amazing! I wish I had professors like you at school! Just a couple of litte questions, Anders. In the Coinbase section you list as a separate field the transaction Coinbase to Anders. First question: Do you mean Coinbase as the famous Coinbase company and so you are assuming that Anders receives money from a Coinbase transaction is his favour? What is the sense of repeating the same $100 coinbase -> Anders in all next blocks ? Why on the last block there is a $100 Coinbase ->Sophia? It seems not to make any sense as Sophia would not give out any further money to anyone in that block. Thank you very much again!

Best blockchain explanation ever! You are a legend.

it's really nice; best explanation of blockchain i've ever seen before <3

Really well explained!

hello sorry im also trying to just use your program online in a browser but i cant get it to wrok..ot says save file and i save it andnothing happens or if i try to open with i try a browser but it still saves the file ..thx if anyone can help..jessica

hello i am trying to run the code in cygwin and i am getting this error....**SyntaxError: Invalid or unexpected token
at Module._compile (internal/modules/cjs/loader.js:723:23)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)
at Module.require (internal/modules/cjs/loader.js:692:17)
at require (internal/modules/cjs/helpers.js:25:18)
at Object.<anonymous> (C:\cygwin64\home\Tommy Robert\blockchain-demo\app.js:9:14)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)**.....would you know how to solve this?..i am on a win dows 7 machine..should i try to run it on VMware ubuntu machine?,,thxz for your great vid...Jesiica

Best demo I've seen. In the future, public-private key pair will replace social security numbers, passwords, account codes, driver's license #, passpost #, etc....

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