Bitcoin is worthless (but so is your “real” money)

Bitcoin is worthless (but so is your “real” money)

Hi, my name is Xavier, and when I talk about cryptocurrencies, I often get comments saying that Bitcoin, Ethereum, and others aren’t worth anything. That people are just artificially creating its value. And you know what, that’s true. I also hear that they’re not real because it’s only virtual money, not physical. That’s true as

Miner rewards & transactions - Blockchain in Javascript (part 3)

Miner rewards & transactions – Blockchain in Javascript (part 3)

hey everyone my name is Sofia and in this video we will continue working on our little JavaScript blockchain implementation in the last two videos we created our blockchain and we secured it with the proof-of-work algorithm in this video I'm going to expand it a little bit and make it a simple cryptocurrency to

Signing transactions - Blockchain in Javascript (part 4)

Signing transactions – Blockchain in Javascript (part 4)

welcome back to the blockchain in JavaScript series in the previous three videos we have created a simple blockchain in JavaScript we added proof of work and we added transactions and mining rewards but there is a small problem with our current version and that is that anyone can make any transaction that he wants