You MUST understand Cryptographic Hashing for blockchain

🤑 Learn how to become a highly paid blockchain developer:

[andrewadams]

I've been Wandering around the blockchain aimlessly for the past three years, just wanted to let you know that your videos are easily the most informative and useful that I have come across. I just wanted to say thank you for making these videos, a lot of them are a few hours long, and help people like me that do not come from a coding background to actually make sense of all the information that's out there. Way to strip away all the hype and get straight to what people need to know! I subscribed and will be working my way through all the videos starting now!

[simonbachmann]

12:15 a 51% attack does not allow you to arbitrarily change your account balance. It allows you to invalidate a part of the blockchain by providing a longer chain and thus, you can double spend your coins.

[kevinnzeng]

Thanks Gregory! Your tutorial and explanations are so great. More videos of theorical concepts like that around Blockchain would be nice (public key cryptography/signing/ different Consensus algorithms like POS - DPOS- POW - Poet/ Merkley trees / Zero-Knowledge-proof/etc).

Thanks a lot!

[aurinator]

Definitely interested. Further though, one Pet Peeve I've developed with these markets is the frequent description of it as being something along the limes of "complicated functions are solved." This isn't the case at all, and it's all fundamentally brute-forcing hashes to be awarded the chance to create the next block when the "guess" creates a hash with certain characteristics - the number of leading zeros in the case of Bitcoin for instance. Regardless, my point is that the functions that are ultimately being brute-forced aren't "complicated" at all; it's just difficult to arrive at the right guess/the right nonce. But, you're just abstracted from that, and that's always bothered me, like it's trying to make it sound more complicated than it is. Guessing the right nonce is objectively complicated, and requires many many failed guesses, but it doesn't change that just the guess itself is not.

[rene]

Hi Gregory, thanks to you I was able to create my first simple self-made dApp. Thanks very much. In this process I learned, what a mess web3.js is and read about ethers.js as an alternative. Would be nice, if you could create some tutorials with the alternative toolchain Buidler, Ethers, Waffle and possibly Typescript.

[Jshanks]

What are some notable companies and businesses (both in and out of the blockchain space) that are interested in hiring blockchain developers? I understand the freelancing route well thanks to your previous vids. I'm curious specifically what companies you recommend reaching out to in these early stages?

[andrewadams]

Oh! If you haven't done an ERC721 tutorial, That would be awesome to see. especially how to integrate one into a self mining contract like CryptoKitties, I have been trying to figure out where I need to use Off Chain data and where to keep things in Smart Contracts, It seems like the NFT Token Id is just being used as a UUID, not sure exactly how it all comes together.

[Thecryptoprofessor]

Woah woah, bitcoin uses PoW and therefor a 51% is not accurate as that's for PoS. (Gr8 videos)! #booBTC