Will BTC continue to fall? Does it have no bottom? I think BTC has a bottom. How to calculate the bottom of it? I have a little thought about it.
If the price of bitcoin is lower than the mining cost of miners, then the miners are greatly reduced. BTC will be attacked by 51%. It is not accepted for all Bitcoin holders. Especially whales.

Setting: Number of bitcoin miners = A.
(Bitcoin is attacked by 51%) The minimum number of miners = B  （B is not a constant. It is dynamic）

When A=B, the bitcoin price is close to  Hard bottom.

Bitcoin exists at the bottom of Soft. Usually the bottom of the soft is determined by the market.
Soft bottom > Hard bottom

Disclaimer: The above method is used for research. It does not guarantee your investment.

the price of bitcoin has been changing dramatically, and many people have invested in bitcoin. And they get a generous return. these stories attract more people to join Bitcoin. in my opinion, this is precisely an obstacle. It is an obstacle for Bitcoin to be used on a large scale. It requires a stable value for a currency that is used on a large scale.

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各路大神，我的比特币核心钱包一直无法同步，里面的比特币怎么取出来？有没有好用方便的比特币钱包，主要是小额转账的，要安全点的！

本人有台闲置的电脑，几年前买的，2G显卡，前几天试了一下挖比特币，以太坊，根本没收益，还不够电费，有什么其他的好挖的矿，对配置要求不高，请大牛赐教！

近日华尔街说比特币是史上最大的泡沫，马上要跌破100美元，结果比特币近期大涨，得出的结论是华尔街有人正准备大规模买进比特币所以说了反话。一月二十九日说瑞波币飙升历史最高纪录直逼比特币主导地位，结果第二天瑞波币大跌，估计说这话时他们在大批的抛仓。以后华尔街说什么币大涨的时候千万不能买进，相反说什么币要跌的时候可以买啦。

现在比特币转账要速度快给的转账费太高，转账费给低速度太慢，这两者怎么均衡？请大牛们指点，有没有一个比值？