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We’re sitting on a park bench. It’s a great day.
I have one apple with me. I give it to you.
You now have one apple and I have zero.
That was simple, right?
Let’s look closely at what happened:
My apple was physically put into your hand.
You know it happened. I was there. You were there. You touched it.
We didn’t need a third person there to help us make the transfer. We didn’t need to pull in Uncle Tommy (who’s a famous judge) to sit with us on the bench and confirm that the apple went from me to you.
The apple’s yours! I can’t give you another apple because I don’t have any left. I can’t control it anymore. The apple left my possession completely. You have full control over that apple now. You can give it to your friend if you want, and then that friend can give it to his friend. And so on.
So that’s what an in-person exchange looks like. I guess it’s really the same, whether I’m giving you a banana, a book, or say a quarter, or a dollar bill….
But I’m getting ahead of myself.
Back to apples!https://preview.redd.it/tiqzyii38kg31.jpg?width=700&format=pjpg&auto=webp&s=6e084a4531a010db9d1fad4329582a418b13a4e3
Now say, I have one digital apple. Here, I’ll give you my digital apple.
Ah! Now it gets interesting.
How do you know that that digital apple that used to be mine, is now yours, and only yours? Think about it for a second.
It’s more complicated, right? How do you know that I didn’t send that apple to Uncle Tommy as an email attachment first? Or your friend Joe? Or my friend Lisa too?
Maybe I made a couple of copies of that digital apple on my computer. Maybe I put it up on the internet and one million people downloaded it.
As you see, this digital exchange is a bit of a problem. Sending digital apples doesn’t look like sending physical apples.
Some brainy computer scientists actually have a name for this problem: it’s called the double-spending problem. But don’t worry about it. All you need to know is that, it’s confused them for quite some time and they’ve never solved it.
But let’s try to think of a solution on our own.
Maybe these digital apples need to be tracked in a ledger. It’s basically a book where you track all transactions — an accounting book.
This ledger, since it’s digital, needs to live in its own world and have someone in charge of it.
Say, just like World of Warcraft. Blizzard, the guys who created the online game, have a “digital ledger” of all the rare flaming fire swords that exist in their system. So, cool, someone like them could keep track of our digital apples. Awesome — we solved it!
ProblemsThere’s a bit of a problem though:
1) What if some guy over at Blizzard created more? He could just add a couple of digital apples to his balance whenever he wants!
2) It’s not exactly like when we were on the bench that one day. It was just you and me then. Going through Blizzard is like pulling in Uncle Tommy(a third-party) out of court(did I mention he’s a famous judge?) for all our park bench transactions. How can I just hand over my digital apple to you, like, you know— the usual way?
Is there any way to closely replicate our park bench, just you-and-me, transaction digitally? Seems kinda tough…
What if we gave this ledger — to everybody? Instead of the ledger living on a Blizzard computer, it’ll live in everybody’s computers. All the transactions that have ever happened, from all time, in digital apples will be recorded in it.
You can’t cheat it. I can’t send you digital apples I don’t have, because then it wouldn’t sync up with everybody in the system. It’d be a tough system to beat. Especially if it got really big.
Plus it’s not controlled by one person, so I know there’s no one that can just decide to give himself more digital apples. The rules of the system were already defined at the beginning. And the code and rules are open-source. It’s there for the smart people to contribute to, maintain, secure, improve on, and check on.
You could participate in this network too and update the ledger and make sure it all checks out. For the trouble, you could get like 25 digital apples as a reward. In fact, that’s the only way to create more digital apples in the system.
I simplified quite a bit…but that system I explained exists. It’s called the Bitcoin protocol. And those digital apples are the “bitcoins” within the system. Fancy!
So, did you see what happened? What does the public ledger enable?
1) It’s open source remember? The total number of apples was defined in the public ledger at the beginning. I know the exact amount that exists. Within the system, I know they are limited(scarce).
2) When I make an exchange I now know that digital apple certifiably left my possession and is now completely yours. I used to not be able to say that about digital things. It will be updated and verified by the public ledger.
3) Because it’s a public ledger, I didn’t need Uncle Tommy(third-party) to make sure I didn’t cheat, or make extra copies for myself, or send apples twice, or thrice…
Within the system, the exchange of a digital apple is now just like the exchange of a physical one. It’s now as good as seeing a physical apple leave my hand and drop into your pocket. And just like on the park bench, the exchange involved two people only. You and me — we didn’t need Uncle Tommy there to make it valid.In other words, it behaves like a physical object.
But you know what’s cool? It’s still digital. We can now deal with 1,000 apples, or 1 million apples, or even .0000001 apples. I can send it with a click of a button, and I can still drop it in your digital pocket if I was in Nicaragua and you were all the way in New York.
I can even make other digital things ride on top of these digital apples! It’s digital after-all. Maybe I can attach some text on it — a digital note. Or maybe I can attach more important things; like say a contract, or a stock certificate, or an ID card…
So this is great! How should we treat or value these “digital apples”? They’re quite useful aren’t they?
Well, a lot of people are arguing over it now. There’s debate between this and that economic school. Between politicians. Between programmers. Don’t listen to all of them though. Some people are smart. Some are misinformed. Some say the system is worth a lot, some say it’s actually worth zero. Some guy actually put a hard number: $1,300 per apple. Some say it’s digital gold, some a currency. Other say they’re just like tulips. Some people say it’ll change the world, some say it’s just a fad.
I have my own opinion about it.
That’s a story for another time though. But kid, you now know more about Bitcoin than most.
Link to original blog post: https://medium.com/free-code-camp/explain-bitcoin-like-im-five-73b4257ac833
Article by: Nik Custodio
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Explain Bitcoin Like I’m Five. If you still can’t figure out what the heck a bitcoin is… Nik Custodio. Follow. Dec 12, 2013 · 6 min read. We’re sitting on a park bench. It’s a great day ... Explain Like I’m Five: Bitcoin Fear and Greed Index. March 31, 2020 April 1, 2020 Patch de Leon . The crypto holders and users in various corners of the world are unceasingly growing in number as the adoption of virtual currencies soars in the financial markets and technology industry. Just this year, data shows that the number of blockchain wallet users reached 44 million at the end of ... Stock Images; Infographic; Why Monero; Tutorials; Monero ELI5 (Explain like I'm five) - a super simple explanation of how Monero works. Monero is digital cash. It’s like Bitcoin, but your activity is kept confidential. Everyone stores their funds using a software application called a Monero wallet. Each wallet has its own receiving address. You tell other people this address so that they can ... Explain Bitcoin Like I’m Five. If you still can’t figure out what the heck a bitcoin is… We’re sitting on a park bench. It’s a great day. I have one apple with me. I give it to you. You now have one apple and I have zero. That was simple, right? Let’s look closely at what happened: My apple was physically put into your hand. You know it happened. I was there. You were there. You ... by Nik Custodio Explain Bitcoin Like I’m Five If you still can’t figure out what the heck a bitcoin is… We’re sitting on a park bench. It’s a great day. I have one apple with me. I give it to you. You now have one apple and I have zero. That was simple, right? Let’s look closely at what happened: My apple was physically put into your hand.
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