bitcoin and the most simplistic terms requires those who are mining to solve complex mathematical puzzles to create a new bitcoin of which there are limited supply. the issue is bitcoin money requires a large amount of power to do this and so it has a sort of cost and eventually there will be some sort of reconciliation between the cost in power terms and the actual amount of bitcoin and the price of bitcoin. miles johnson, live for us in london, thank you for the explanation on what s happening. thank you. and coming up here, the latest on tensions over the u.s.-jerusalem decision. we ll have a live report from the region. plus, celebrations there but these are not protests. we ll explain has cnn newsroom pushes on. no more questions for you! ouph, that milk in your cereal was messing with you, wasn t it? try lactaid, it s real milk without that annoying lactose.
cryptocurrency has been on a wild ride since $7,000 in value just last week. that s an extreme short-term price swing for any currency. bitcoin is digital money bought, sold and kept in so-called wallets online. it s encrypted so you can buy and use it anonymously. the traditional markets are taking renewed interest in it and bitcoin s value has exploded. just take a look at how its dollar value has shot up. it started at less than $800 in january before topping $17,000. this week and some of those traditional markets are hoping to cash in on the big business of bitcoin by opening there own futures exchanges. in just a few hours, the chicago board options exchange will open its bitcoin futures market and it will be joined by the chicago mercantile exchange later this month and nasdaq may follow next year. let s get all the details from miles johnson, capital