Public, private, and consortium blockchains are three different types of blockchain networks that differ in terms of their accessibility and the level of control exercised over them. Public blockchains: Public blockchains are open to anyone who wishes to join and participate in the network. These blockchains are decentralized and are not controlled by any single entity. Examples of public blockchains include the Bitcoin and Ethereum networks. Private blockchains: Private blockchains are restricted networks that are only accessible to certain approved participants. These blockchains are typically owned and operated by a single entity or organization, and access to the network is granted based on the discretion of the owner. Private blockchains are often used by organizations to securely and privately record transactions within their own operations. Consortium blockchains: Consortium blockchains are hybrid networks that are partially decentralized and partially controlled by a group of pre-approved entities. These blockchains are often used in industries where multiple parties need to collaborate and share information, but may not fully trust each other. Consortium blockchains allow for the sharing of information and transactions in a secure and transparent manner, while still maintaining some level of control over access to the network. Which type of blockchain is right for you will depend on your specific needs and goals. Public blockchains offer the highest level of decentralization and are generally considered to be the most secure, but they may not be suitable for all use cases due to their open nature. Private and consortium blockchains offer a more controlled environment and may be better suited for certain types of applications and organizations. It's important to carefully consider the trade-offs between decentralization, security, and control when deciding which type of blockchain is right for your use case.

1. Blockchains - Public vs Consortium vs Private
Public, Private and Consortium Blockchains: What’s Right For You?
Public Blockchain
This is the model of Bitcoin, Ethereum, and Litecoin, and can be considered as the first distributed ledger
structure. For many reasons, many people still consider it the epitome of all blockchains, although it is
not without its drawbacks. Simply put, public blockchains can receive and send transactions from
anyone in the world. Anyone can also monitor them, each node can transmit like the others. Before a
transaction is considered valid, it must be authorized by each node that makes it up through the chain's
verification process. As long as each node respects certain rules of the protocol, their transactions can
be supported and thus included in the chain. Since each node in the public blockchain transmits and
receives energy like any other, they are not only distributed, but distributed in full.
Social barriers are also costly, and not just in financial terms. The time and energy required to process a
transaction in a public chain is more intensive than in a non-public chain. This is because each node in
the chain must authorize each new transaction before it is added to the chain, which requires a lot of
electricity and time (not to mention money).

2. Blockchain Consortium
The blockchain consortium is part public, part private. This division works at the level of the contract
process: in the chain of connection, a selected portal controls the approval process, but other numbers
can allow them to participate in the creation of new transactions and / or it is to review it. The exact
structure of each link chain (that is, the number of people who have the right to authorize transactions
through the contract process, who can review the history, who can create new business, etc.) is the
decision of each individual. interact with each other.
In fact, the weakness of the public blockchain is still very present in the case of consortium chains. It all
depends on how each link is built: the public link chain will bear the weight of the public chain, while the
more private chain may suffer from gaps and distortions. The right setting depends on the needs and
vision of each specific channel. Planning and adaptation are always necessary to achieve the best
solution.
Private Blockchain
In private blockchains, only specific, selected companies have the right to create new transactions on
the chain (called "authorization"). Therefore, a private blockchain is a closed network that provides the
composition of the benefits of the technology, but is not necessarily distributed or shared, even among
its members. The limits of each constituent can be checked ("read") and create and approve
transactions ("write") depending on the developers of the chain.
Because many people have seen government disclosure as a necessary factor for the revolutionary
potential of blockchain, the value of blockchain privacy can be questioned. However, blockchains offer
much more than a decentralized system. Among other features, their strong cryptography and analysis
give them more security than traditional methods (although they are not bulletproof, as mentioned),
they help to create new cryptocurrencies. In addition, voting platforms, accounting systems, and all
kinds of databases can be made more efficient by blockchain technology. We are still in the early days of
blockchain technology, and its potential to revolutionize old systems has yet to be seen.
The network developer will authorize the operation of the private blockchain network. It is not open to
anyone to grant access or commercial rights to others. Financial, healthcare, and legal entities are using
private blockchains for enterprise-grade applications where security, scalability, and high transactions
per minute (TPS) are critical.
One use case for private blockchain is intra-company: when a company decides to implement blockchain
as a business solution, they can choose a chain that only members of the company can access. This is
useful if there is no need for a person outside the company to be part of the chain, because private
blockchains work better than public ones in connection. Also, since they are small and internal, it is easy
to change the verification process or other technological processes in the blockchain. So, for example, if
developers or owners want to change the cryptographic system that performs its verification process, it
is easier to do it in a private blockchain than in a public chain or connection.
Also - to state the obvious - private blockchains are private. If it is necessary to restrict the data of the
channel to certain people, the private blockchain can restrict those viewing rights.

3. Companies that use private blockchains can save time and money in the long run, assuming there is no
need for public infrastructure for their blockchain. It may not be as different from older digital systems
like public blockchains, but it can still be very powerful.