#Ethereum I'm going to make you understand things you previously didn't.

25 Nov 2023, 17:55

#Ethereum I'm going to make you understand things you previously didn't. I'm going to pull you out of ignorance and into knowledge. This will make you stronger. Front ends are just writing assistants. You want to freely associate and communicate with your peers by publishing publicly and provably to the blockchain, but remembering the format and doing the math is hard, so you use a "front end" to assist you with your communication. You verify that the "front end" helped you correctly when you hit that metam@sk approval screen where it shows you what you will be communicating exactly. Thus in the end, what you freely speak to the public via the blockchain is all that matters, and your "front end" and "wallet" are just speech assistants, like a word processor. Why does this matter? Because you have many different paths that end up in the same result of that same speech. Your word processor like speech assistant code could be run on your device by an IPFS or zip file, or compiled yourself from source from gitlab, or from someone else's computer on the net that already did the same. In the end, your speech is all that matters, and which code repository generated the binary that you're running on your device to assist you doesn't really matter much. Unless it's evil. Then it matters a lot. Because maybe when you inspect your speech, you don't notice the evil. Thus, how do you know what you're running is what you think you're running. Welcome to the magic of hashes sir. Hashes are the core driving principle behind all blockchains. Period. A hash is a function that takes a lot of data and turns it into a very small amount of data, a tag if you will. So that you can tag things and know what they are, quickly. And if any little thing changes at all in the thing tagged, the tag would change massively. This way software releases have tags (hashes) and you know what code you're running, because you can inspect the hash before you run it. So it doesn't matter where in the world you downloaded something from, as long as the hash matches what you know it should, then you know it's safe to run. Enter IPFS. What's that you say? It's an innovative way of storing data. Instead of giving files names, and organizing files by their names, as you do on your personal devices, you instead just hash all the files, and organize them by their hashes. This does a few very cool things. 1. Everyone really knows what they're really downloading, because you can fake file names but you can't fake file hashes. 2. Deduplication. You know what files are dupes, instantly, because their hashes match. 3. Security. No one can pull the old switcheroo on you and replace what was once safe with something evil, because the hash would change. So IPFS is pretty great, in that, when you browse to a file hash, you know exactly what you're getting. Because you're browsing to a hash, and a hash is the purest form of knowing what've you have actually got. You can run IPFS natively in some browsers, or you can use an extension in chrome. Or you can use other people websites "gateway", but that's not as secure, because they could change the site's code. Time for some more education. Developers edit text for a living. And they edit that text alongside thousands of other developers, and all that text has to get merged and deleted and cut and extended and rolled back, you name it. And how do they do all that? Using VCS "Version control system" such as GIT. And how does GIT keep track? Hashes. And what is every block in a blockchain? Hashes. Hashes are cool. They've even got something called DHT, a "Distributed Hash Table" that drives Bittorrent, and other things.

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TrustSwapSWAP #1046

25 Nov 2023, 18:09

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HEXHEX #3661

25 Nov 2023, 17:55

There's lots of different hash functions and what makes them better is when they're fast to run, and don't have collisions. A collision is where two different files generate the same hash, which they shouldn’t. As always your screen must trust the GPU, the GPU must trust the CPU , the CPU must trust the hard drive, the hard drive must trust its firmware, and then there's the OS, etc, etc. There's always trust, the trick is to replace the trust with proof as much as you can, and that's what hashes do. And it works, because the vast majority of cryptocurrency users are unhacked, regardless of skill level. And let's be serious, there's some unskilled folks out there. TLDR; Wallets and front ends are just word processors that help you speak publicly (publish). Hashing them lets you know exactly what code your running. IPFS is based on hashes.

There's lots of different hash functions and what makes them better is when they're fast to run, and don't have collisions.