The value of bitcoin is going down due to the news of google about banning cryptocurrency related ads and ICO. But not only that Twitter and instagram according to some articles are also making those actions. Though it is unverified information but it is making a stir on the market thus have played a role on the drop of bitcoins value. But thanks to the news on G20 that says they are going to tackle about the benefits of cryptocurrency, bitcoin has recovered its value and hopefully to climb up more.
Their are many reason behind this rapid falling of bitcoin's price. Bitcoin is a volatile currency which is another reason behind this. Bitcoin is a decentralised currency which means it is not control by any central authority or person. So their a lot of disturbance seen in its production and supply. Irregularities in the mining of bitcoin is also a reason behind this. Many government sacred of bitcoin and ban it in their country. And this thing negatively affects its market prices. Altcoin popularity also affect indirectly in the price of bitcoin. 