Bitcoin is actually "Fiat", although it is a necessary irony because critics of the paper money, the "Fiat" system, have been a necessary development (because it must have happened in history). Latin means "I told you" and Bitcoin also appeared after a 9 page manifesto. There is no difference in this direction from paper money because you have not relied on anything at all. Although it is seen as an alternative to the paper money system because it only limits the amount, there is no question that it is an alternative in today's economy with the limitation of 21 million pieces. But the idea (printing of money by private institutions vs. central mint) and technology may be an alternative.
However, the blockchain technology extracted from the sky has some problems in the area of crypto money. Scalability is one of them. With the reason for the problems that 1 MB blocks create, we often hear solutions such as SegWit, 2X, 8 MB blocks. But there is a second problem that is bigger. Madenciler "class" that approves bitcoin blocks, that is, processes the network. Blockchain's Bitcoin version requires the existence of this class for its operation, and more importantly, it must be charged for the effort it has spent. Bitcoin's verification mechanism Proof of Work (Pow) is a method that allows miners to be weighted decoders. The alternative is the Proof of Stake, which we call the working system in proportion to your share.
In both systems, some "classes" emerge, and in the decentralized world created by Bitcoin, a different but again centralized power is formed. Processers and approvers. Transaction fee payers and fee winners. If the price is higher, Bitcoin will be able to switch from mining to Bitcoin Cash mining, and it is a class that is not loyal but systematic. In that case, "Blockchain" may not be as transforming technology as you might think. Which, I think, is not really true, but it will surely work in many industries. The idea of the centralized currency is the converter itself. IOTA uses Tangle, a different technology than blockchain, to block the "class" formation mentioned above and the inevitable central power that will emerge, and the mesh is clearly defined.
So nobody knows the entirety of your network (which in theory, 51% reduces the likelihood of a 34% attack in practice very much). If you want to approve a transaction, you have to approve the 2 transactions described earlier. Contrary to the fact that the information lies vertically on the Blockchain, you are checking that your own and reference transactions will not cause double spending. Then you explain to the "neighbor" computers. They also send you through similar checks before a transaction. Even if the process is manipulated, the first main Tangle comes true. So miners and wage applications come out from there and we all start to work on principle for all of us.