Loi: Blockchain protocols in general and Bitcoin / Ethereum enable superior security compared with a traditional/centralized system. In such protocols, users do not need to trust one or two system admins to keep the system safe. However, blockchains and cryptocurrencies are sometimes recognized as untrustworthy, mostly because of several hacking cases that gave them a bad name. Protocol wise, they are secure, but the actual implementation may have flaws due to bad practices and coding errors. Hackers or attackers usually exploit weaknesses in the applications that are built on top of them.
Inside The Cryptocurrency Revolution | VICE on HBO
After I lost my job in 2019, I started looking for ways to make money. I was desperate. I had some savings to invest, but not a ton. While I was researching I found some information on bitcoin trading/mining/investments, so I started searching more about those topics and that is when I found this post. Anyway, long story short, I have more than replaced my former monthly income and it is continuing to grow. I credit the information given here for the vast majority of it. You are awesome!
Loi: Bitcoin and any other blockchain must agree on the set of rules that govern and update the state of its ledger. A fork on a blockchain happens when the community disagrees on the set of rules that secure and update the Bitcoin blockchain. When a fork happens, in the case of the Bitcoin fork, the Bitcoin blockchain split into two separate blockchains with different protocol rules, having different supporting communities with different backing philosophies on how to move forwards.
I don’t think Bitcoin investment is very risky if you know what you are doing and have the right information! Most people panic and give up after the market falls because they don’t know how to deal with those situations and come out on the right side of it. The key is doing your research and having the right kind of mentors and resources available to you! I have found this guide to be very helpful. Thank you.
The bitcoin network can process about seven transactions per second, with transactions being logged in the blockchain every 10 minutes. For comparison, Visa can process somewhere around 24,000 transactions per second. As the network of bitcoin users continues to grow, however, the number of transactions made in 10 minutes will eventually exceed the number of transactions that can be processed in 10 minutes. At that point, waiting times for transactions will begin and continue to get longer, unless a change is made to the bitcoin protocol.
The ins and outs of bitcoin mining can be difficult to understand as is. Consider this illustrative example for how the hash problem works: I tell three friends that I'm thinking of a number between one and 100, and I write that number on a piece of paper and seal it in an envelope. My friends don't have to guess the exact number; they just have to be the first person to guess any number that is less than or equal to the number I am thinking of. And there is no limit to how many guesses they get.
The screenshot below, taken from the site Blockchain.info, might help you put all this information together at a glance. You are looking at a summary of everything that happened when block #490163 was mined. The nonce that generated the "winning" hash was 731511405. The target hash is shown on top. The term "Relayed by Antpool" refers to the fact that this particular block was completed by AntPool, one of the more successful mining pools (more about mining pools below). As you see here, their contribution to the Bitcoin community is that they confirmed 1768 transactions for this block. If you really want to see all 1768 of those transactions for this block, go to this page and scroll down to the heading "Transactions."
In Bitcoin terms, simultaneous answers occur frequently, but at the end of the day, there can only be one winning answer. When multiple simultaneous answers are presented that are equal to or less than the target number, the Bitcoin network will decide by a simple majority—51%—which miner to honor. Typically, it is the miner who has done the most work, that s, the one that verifies the most transactions. The losing block then becomes an "orphan block." Orphan blocks are those that are not added to the blockchain. Miners who successfully solve the hash problem but who haven't verified the most transactions are not rewarded with bitcoin.
How Does Bitcoin Work?