 Simple rule. If you control the keys, it's your Bitcoin. If you don't control the keys, it's not your Bitcoin. Your keys, your Bitcoin, not your keys, not your Bitcoin. Your keys, your Bitcoin, not your keys, not your Bitcoin. Here's the problem. A lot of people have no idea how to even start to decide if they actually control the keys. Let me ask you a question. How many of you control your Bitcoin with your own control over your keys? I'm counting myself here. Very good. How many people do not control their Bitcoin, but have it in an online account, where somebody else is controlling the Bitcoin? Don't be shy. It's okay. We all started there. More importantly, how many people have no idea how to answer that question? You don't know if you control it, right? Let me give you some advice. If you are running a wallet, each time you do a transaction, it generates a new address. But when you started using that wallet and told you something like, write down these 12 words, or these 24 words, and keep them as a backup, those words, they generate all your keys. The reason you have to write them as a backup is because you are controlling those keys, and if you lose those words, you lose the keys, you lose the Bitcoin. With great power comes great responsibility. If you have a wallet in which you are asked to write down the backup, you control the keys. If you didn't write down the backup, when you go home tonight, it would be a good time to open the sentence, go to backup, and write down those damn 12 words before you lose your phone or drop it in the toilet, because you were trying to text while in the bathroom. We all knew it. When you dropped it in the toilet and your Bitcoin disappeared because your phone blew up, and then what? You called the Bitcoin help desk. There's no Bitcoin help desk. You go and write it, and you go, I lost my keys. Can someone help me? And what are people going to say? Did you write down the 12 words? You didn't? Sorry for your loss. How do you know how to do a backup and how to control your own? A lot of people don't know how to start, so I'm going to give you a quick tutorial on how to control your own keys. First of all, what is the most secure device you own? Not your laptop. Definitely not your laptop. How many here have Windows? My sincere condolences. Okay, so you don't own your Windows machines. Your Windows machines are owned by a combination of viruses and torsions that are controlled by Russian and Chinese hackers somewhere else in the world, but they're not really your machines. They just let you use them occasionally. Do not put Bitcoin on those devices. That's like making a donation to hackers. They have software actively looking for Bitcoin software, and when they find it, they take it. When they put a key warmer, they wait for you to do a transaction and enter your password, and then they take it. Okay, the most secure device you own is your smartphone. Yes, Android, iOS is the most secure device you own. Operating systems on smartphones are far, far more secure than laptops and desktops, especially Windows. So your smartphone is probably the best place to run a wallet. If you have a lot of money invested in cryptocurrencies or own a lot of Bitcoin, and the word a lot means different things to different people, but if you feel like it's a lot, right now I told you, your Bitcoin has just been stolen. Do you go, ah, I'll get some more? Or do you start crying? Or do you have to have a very difficult conversation with your parents and your spouse about why your kids won't be going to college? So those are variations in the word a lot of crypto. If you have a lot of crypto more than you would be upset to lose, you should buy a hardware wallet. A hardware wallet is a USB device. I can recommend a couple of those. Ledger, Trezor, those are really good. Bitcointrezor.com, Ledger.com, Keith Key, there's a bunch of others. They're a bit difficult to buy right now because apparently about a million people noticed that the Bitcoin price went up and decided to finally join this thing, and then it all went out and tried to buy a hardware wallet, so they're out of stock. That's a good problem to have. But a hardware wallet is this little USB device which keeps your Bitcoin keys on a highly secure, special purpose device. Even if your computer is absolutely full of viruses and hackers, you can use that device securely because everything happens on the device, and the device itself can't be attacked over USB. It's almost impossible. So buy a hardware wallet. If you can't buy a hardware wallet, download software onto your smartphone. If you have iOS, I could recommend bread wallet, or mycelium, or copay, or AirBits. If you have an Android wallet, mycelium, or copay, or AirBits. I don't work for any of these companies. I haven't taken money from any of these companies. They're just ones that I've used. They've been around for a while. I trust them to be much better than whatever else you're doing right now. Download those wallets, install them on your smartphone, then when it tells you to make a backup of your 12 to 24 English words, don't get smart, don't get fancy, don't say, well, I'll write three of the words here, and then I'll take the other three words, reverse them, put them in my phone book, hide them in my library, give them to my cop, don't get fancy. Paper, pencil, write down the 12 to 24 words. The chances that someone is going to get a hold of that and know what it is, pretty slick. Put it in a drawer, lock it, put it in a safe, lock it. And then you can use your phone, and if you lose your phone, you have the words. If you lose the words, you have your phone. Both are equivalent. Anytime you want, restore from those words, all of your transactions, all of your money, you get back. Now you control your cryptocurrency. These wallets, many of them, JAX is another one. If you have multiple currencies, not just Bitcoin, if you have Ether, Dash, Monero, Zcash, LTC, whatever, JAX, JAXX. Exodus? Never heard of it. I don't know if it's a... That doesn't mean it's not good. I'm just saying I haven't personally heard of it. Okay, so down on one of those wallets, write down the phrases, pencil on paper. Right? If our civilization ended tomorrow, in one month, two months, all of the CDs, DVDs, hard drives, USB drives would be dust. Okay, maybe not three months, but 3,000 years? Dust. We're still finding paper from the Egyptians. Paper lasts. Yes, paper. Don't put it on a USB drive. Paper. Simple. Acid for a paper will last for hundreds of years. If you're extra paranoid, you eliminate it so that it cannot get destroyed by water. You buy a very inexpensive, fireproof safe from your office store. You put it inside so it can't be burned. Flood, fire, theft, covered. Now, on that kind of system of wallets, hardware wallets with your backup words, you can store, I know people who store millions of dollars. I'm not joking, on exactly that kind of system. Once you have control of your Bitcoin, it doesn't matter if there's a fork. It doesn't matter if your exchange decides to go one way or another. It doesn't matter. You should not be keeping your money on an exchange. You should not be keeping your money and trust someone else to keep it safe for you. That's just a bank, and part of the reason we're doing this open blockchain is because we don't trust banks.