There are different types of networks, differing from each other in

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their structure and functions. Let's briefly consider their main features.

Public
In public blockchains, anyone can participate in the network, mine blocks, and create transactions. For example, Bitcoin and Ethereum are public blockchains.

Private
In private blockchains, access to the network is limited to a group of people or businesses. Private networks are used to manage internal processes or to deploy applications with limited access.

Consortiums
Consortium blockchains are a hybrid type where multiple organizations participate and jointly manage the network. They are used to create applications where access to information is determined by the network participants.

Where is blockchain technology applied?
The technology, originally created for the operation of cryptocurrency networks, is now used in a variety of areas. The capabilities of blockchains continue to expand year after year and offer new solutions to old problems. In this review, we will briefly consider some areas.

Cryptocurrency
Blockchain technology has served as the basis for cryptocurrencies — digital (virtual) currencies uk whatsapp number database that use cryptography to ensure their security. Cryptocurrencies operate on decentralized platforms — this ensures their independence from central banks and governments. Let's look at the main aspects of the technology in the context of cryptocurrencies:

Decentralization: Unlike fiat currencies, which are issued and controlled by central banks, the issuance and movement of each cryptocurrency is managed by the blockchain, making them less susceptible to manipulation and censorship.
Security and anonymity. Each transaction recorded in the blockchain is protected by hashing - it is almost impossible to forge or modify. In addition, many cryptocurrencies offer user anonymity - using them, it is possible to conduct financial transactions without disclosing their participants.
Transaction fees. Small fees compared to traditional financial systems. This is essential for international transfers, where transaction fees can be significant.
Smart contracts. The blockchains of some cryptocurrencies, such as Ethereum and Cardano, support smart contracts — self-executing contracts with conditions fixed in the code. By using smart contracts, it is possible to automate many processes and, in some cases, eliminate the need for intermediaries in their execution.
Investments and speculation. Many people buy cryptocurrency in the hopes of its growth - for this purpose the trading market was created. However, it should be noted that there are significant risks in investing in cryptocurrencies due to price volatility.
Financial inclusion. In simple terms, it is access to financial services for those people who do not have access to traditional banking systems or who find it difficult to use them. It is especially relevant in developing countries.
Tokenization of assets. Using blockchain technologies, it is possible to tokenize real assets (real estate, art, etc.) - this improves their availability for trading and investment.
Transparency and accountability. Transactions on public blockchains can be verified by anyone. The ability to track the movement of funds helps combat fraud and money laundering.
The rise of DeFi (decentralized finance). The ideas behind cryptocurrency have become the foundation for the development of DeFi, an ecosystem of financial applications powered by blockchain. In short, DeFi offers users the ability to earn interest on their assets, borrow funds, and exchange currencies in relatively simple ways without the involvement of traditional financial institutions.