What is the Blockchain Trilemma?
In the last couple of years, blockchain technology has established itself as an alternative to the centralization created by modern banking. Many people across the globe view this new idea of not having an intermediary when executing a transaction as the future of money transfers, especially when put into the context of the digitalization of the modern era. However, this decentralized system faces a very unique problem known as the “Blockchain Trilemma”: it questions the ability of blockchain to achieve a balance between decentralization, security, and scalability within its infrastructure.
Blockchain security refers to a blockchain protocol’s protections against all types of cyberthreats and network assaults, while decentralization refers to the meaningful distribution of computing power and consensus throughout a network. Both factors need to be present in order for the entire system to operate efficiently.
What Exactly Is Blockchain Scalability?
Scalability is the ability of a particular system to process an increasing amount of data. When it comes to blockchain, this feature is attributed to how efficiently a number of transactions can be processed. The slow throughput of Bitcoin is directly connected to the fact that all participants in a transaction are required to validate it. This is a growing problem because Bitcoin and Ethereum are used for a large number of transfers, and their systems are nowhere near as efficient as Visa’s payment system, for example. Scalability is a very significant feature because it can show the potential of the blockchain network to challenge the centralized banking system, which is known for being able to process a large number of payments in a very short period of time.
What are Layer-2 scaling solutions?
Layer-2 scaling solutions are designed to improve the scalability of the blockchain without making changes to the fundamental Layer-1. They operate by moving data and information off the first layer, which allows the system to process a large number of transactions without congesting the main network. There are a couple of different types of solutions, which include:
- Plasma chains: they use multiple smart contracts to establish child chains that are parallel to the main system. Their aim is to process a large volume of transactions without putting any additional strain on the main system.
- State channels: their primary function is to create an opportunity for off-chain transactions. While these transfers are completed outside of the main system, the final result is still recorded on the blockchain.
- Side chains: these are separate blockchains that are attached to the main one, which enables the exchange of resources and information between the two chains. The main system is less stressed and is more scalable since transactions on the side chain are handled more rapidly and costless than on the main chain.
Layer-1 vs. Layer-2 blockchains
Layer-1 is the main blockchain network responsible for on-chain transactions, and its primary goal is preserving the consensus system, confirming transactions, and protecting the network from potential cyber threats. Some examples of it include Bitcoin, Ethereum, and Ripple. The secondary layer is the connected network in charge of off-chain transactions. The founding layer’s main function is to provide a foundation, while the secondary blockchains are built on top of it, and their main goal is to increase the efficiency and capacity for the processing of transactions.
The Importance of Layer-2
The Layer-2 scaling solutions’ main task is to process payments off the mainnet, while preserving the same security protocols and decentralization as the Layer-1 blockchain. They reduce the gas fees significantly while increasing the speed of the transactions. These solutions are key for the users as they allow for scalability and increased throughput while still holding the integrity of the blockchain. They are key to the decentralized world of cryptocurrency in its competition with the centralized banking system and are responsible for making non-intermediary digital payments more efficient and comfortable for all users.