Hacking a computer to steal your bitcoin, as long as the computer is connected to the Internet, this is inevitable, we should put the wallet in a safer place.
The disconnected hard drive or computer is usually disconnected, except when used.

I think it is worthwhile, although I spent a lot of time, money, energy, and great pressure on bitcoin investment. But I also get a lot of income, enough to buy a house in my hometown.

In the event of a small-scale war, bitcoin may not be much affected. In the world wars, the public’s trust in various currencies (second-tier cryptocurrencies, bitcoins, banknotes, diamonds, precious metals, etc) will gradually shrink. The first to abandon currencies with low confidence and low degree of consensus will eventually be concentrated in one or two currencies. A currency with a high degree of trust goes up for hard currency. Its great chance is gold, a currency that has experienced thousands of years of human social turmoil. Its trust and consensus are the highest.

Take Bitcoin's blockchain as an example. You can think of a blockchain as a Bitcoin public ledger. This account:
1. Stored on each Bitcoin node of the Internet, each node has a complete backup
2. It records all Bitcoin transfer transactions since the birth of Bitcoin.
3. The ledger is stored in partitioned blocks, each containing a portion of transaction records. Each block will record the id of the previous block, forming a chain structure, hence the blockchain
4. When you want to initiate a bitcoin transaction, simply broadcast the transaction information to the p2p network. The miner records your transaction information as a new block to the blockchain and the transaction is completed.

I think this is a kind of fraud. Of course, the emergence of new fraud methods can also show that mankind is making progress. If a beggar uses Bitcoin to trade, it means that he has relevant knowledge and trading equipment, but why is he still so poor? So is he really a liar?

Bitcoin is like a grass sprout, and there is no backing or background. Therefore, the recognition of value is very important to it. This is also an important element in the development of Bitcoin. For Bitcoin, more application scenarios can truly enhance its value, which will become the key to the future.

I think it depends on what coin, if it is bitcoin, I would prefer to hold it for a long time, thinking that it is suitable for taking a long-term look at its development, so its price will have a big increase in the future. . But for some altcoins, I would prefer to trade.

I think everyone's choice is different. Someone who is optimistic about bitcoin will continue to hold it and will not sell it. When he holds, he must bear the risk during this period. He paid the price. Why is it greedy?

The price of Bitcoin is of course unstable, and there is no stability in the entire cryptocurrency market. High yields are accompanied by high returns. This law is forever established in investment.