The network of computers (or "nodes") that make up a blockchain are connected by a digital ledger that records all transactions. A blockchain enables blockchain applications by using several technologies, like digital signatures, distributed networks, and encryption/ decryption methods, including distributed ledger technology.
Blockchain is one type of DLT in which transactions are recorded with an unchangeable cryptographic signature called a hash. That is why distributed ledgers are often called blockchains.
What is Distributed Ledger Technology (DLT)?
The core of Distributed Ledger Technology (DLT) is a distributed, encoded database that stores transaction-related data. A distributed ledger is a database that is accessible to many people all over the world and dispersed among several nodes, computers, companies, or countries.
Features:
- Decentralized: It is a decentralized technology, and every node will maintain the Ledger, and if any data changes happen, the Ledger will get updated. Updating takes place independently at each node. Even small updates or changes made to the Ledger are reflected, and the history of that change is sent to all participants in seconds.
- Immutable: Distributed Ledger uses cryptography to create a secure database in which data, once stored, cannot be altered or changed.
- Append only: Distributed ledgers are append-only compared to the traditional database, where data can be altered.
- Distributed: No central server or authority manages the database in this technology, which makes the technology transparent. To counter the weaknesses of having one Ledger to rule all, So that there is no one authoritative copy and have specific rules around changing them. This would make the system much more transparent and a more decentralized authority. In this process, every node or contributor of the Ledger will try to verify the transactions with the various consensus algorithms or voting. The voting or participation of all the nodes depends on the rules of that Ledger. With Bitcoin, the Proof of Work consensus mechanism is used for the participation of each node.
- Shared: The distributed Ledger is not associated with any single entity. It is shared among the nodes on the network where some nodes have a full copy of the Ledger while others have only the information required to make them functional and efficient.
- Fault Tolerance: Distributed ledgers are highly fault-tolerant because of their decentralized nature. The data remains available on other nodes if one node or participant fails.
- Transparency: Distributed ledgers are transparent because every participant can see the transactions on the Ledger. This transparency helps in creating trust among the participants.
- Efficiency: The distributed nature of ledgers makes them highly efficient. Transactions can be processed and settled in seconds faster than traditional methods.
- Security: Distributed ledgers are highly secure because of their cryptographic nature. Every transaction is recorded with a cryptographic signature, ensuring it cannot be altered. This makes the technology highly secure and resistant to fraud.
How Can DLT Replace Traditional Bookkeeping Methods?
By modernizing and altering the underlying processes of data collection, sharing, and management in the Ledger, distributed ledger technology has the potential to enhance these conventional ways of bookkeeping. To understand this, traditionally paper-based and conventional electronic ledgers were used to manage data that had a centralized point of control.
This system typically requires high computing resources and labor to maintain ledgers and has many points of failure. Points of failure like:
- Mistakes made during data entry.
- Manipulation of data could happen, which increases the risk of errors.
- Other participants contributing data to the central Ledger need help verifying the legitimacy of data from other sources.
However, DLT allows real-time sharing of data with transparency which gives trust that data in the Ledger is up to date and legitimate. Also, Distributed Ledger Technology eliminates the single point of failure, which prevents data in the Ledger from being manipulations and errors. In DLT, there is no need for a central authority to validate transactions; here, different consensus mechanisms are used to validate transactions, eventually making this process quick and real-time. Similarly, DLT can reduce the cost of transactions because of this process.
Types of Distributed Ledger Technology
The Distributed Ledgers can be categorized into three categories:
Permissioned DLT
Nodes must take permission from a central authority to access or change the network. Mostly these types of permissions include identity verification.
Permissionless DLT
There is no central authority to validate transactions; rather, existing nodes collectively validate the transactions. Various consensus mechanisms are used to validate transactions based on predefined algorithms. In the case of Bitcoin proof of work consensus mechanism is used.
Hybrid DLT
It is combined with permissionless and permissioned DLTs and can benefit from them.
Below are some of the DLTs:
- Blockchain: In this type of DLT, transactions are stored in the form chain of blocks, and each block produces a unique hash that can be used as proof of valid transactions. Each node has a copy of the Ledger, which makes it more transparent.
- Directed Acyclic Graphs (DAG): This uses a different data structure to organize the data, bringing more consensus. In this type of DLT, validation of transactions mostly requires support from the nodes in the network. Before any node on the network may start a transaction, it must first provide evidence of the transaction on the Ledger. To confirm their transaction, nodes in this system must independently verify at least two earlier ledger transactions.
- Hashgraph: In this type of DLT, records are stored as a directed acyclic graph. It uses a different consensus mechanism, using virtual voting as the form consensus mechanism for gaining network consensus. Hence nodes do not have to validate each transaction on the network.
- Holochain: Holochain is the next level of Blockchain by some people because it is much more decentralized than Blockchain. It is a type of DLT that proposes that each node will run on its chain. Therefore nodes or miners have the freedom to operate autonomously. It moves to the agent-centric structure. Here agent means computer, node, miner, etc.
- Tempo or Radix: Tempo uses the method of partitioning the Ledger. This is termed sharding, and all the events in the network are ordered properly. Transactions are added to the Ledger based on the order of events rather than the timestamp.
Advantages Of Distributed Ledger Technology
High Transparency
Distributed Ledger presents a high level of transparency because all the transaction records are visible to everyone. Adding data needs to be validated by nodes using various consensus mechanisms. and if anyone tries to alter or change data in the Ledger, then it is immediately reflected across all nodes of the network, which prevents invalid transactions.
Decentralized
In a centralized network, there may be a single point of failure, and it can disrupt the whole network because of mistakes at the central authority level. But with distributed networks, there is no risk of a single point of failure. Because of the decentralized structure trust factor also increases in participating nodes. This decentralized nature of validation reduces the cost of transactions drastically.
Time Efficient
As this network is decentralized, so there is no need for a central authority to validate transactions every time. Hence this time for validation of each transaction reduces drastically. With DLT, network members can validate transactions by using various consensus mechanisms.
Scalable
Distributed ledger technology is more scalable because many consensus mechanisms can make it more reliant, fast, and updated. Because these many advanced DLT technologies have been introduced in the last few years. Such as Holochain, and hash graphs, are considered to be advanced and more secure versions of Blockchain DLT. Blockchain is advanced and secure, but DLT provides a way to more advanced technologies.
Uses of Distributed Ledger Technology
Because of all these benefits of distributed ledger technology and this technology has the potential to revolutionize many sectors like Financial, energy, healthcare, governance, supply chain management, real estate, cloud computing, etc.
Banking
Money transfers can be expensive and time-consuming in the banking sector right now. Also, sending money overseas becomes even more complex due to exchange rates and other hidden fees included. Here DLT can provide a decentralized, secure network that will reduce the time, complexity, and costs required to transfer money. This decentralized network will eliminate the need for third parties, which makes this system more complex and time-consuming.
Cyber Security
Cyber security has been emerging as a big threat to governments, enterprises, and individuals. So it is essential to find an effective solution to secure our data and privacy against unauthorized access. In DLT, various cryptographic algorithms allowed and securely encrypted all information. This provides a transparent and secure environment, and any entity can temper no data.
Supply chain management
The supply chain is one of the complex structures itself. In this structure, it is hard to trace where the fault happened. So here, Distributed ledger technology comes into the picture; using DLT, you can easily trace the supply chain from the beginning to the end and find out where a mistake or fault has happened. All the data added to the DLT is validated and permanent and can not be altered. This data transparency enables us to trace from the beginning to the end of the Ledger.
Healthcare
Distributed Ledger eliminates central authority and ensures rapid access to secured and untempered data. Here important medical can be stored securely, and no one can change this data; even if someone tries to change it will be reflected everyone immediately. DLT can be used in the insurance sector to trace false claims because of its decentralized system.
Governance
DLT can be used in the government system to make it transparent among citizens. Many governments have adopted Blockchain in the governance system because of the robustness of this system. It can be used as a voting system too. The traditional voting system has many flaws, and sometimes it is found that many false voting and illegal activities happen during voting. Online voting systems can vote, and with security and fake votes can be easily checked. Everyone will have their own identity so that any person sitting anywhere in the world can cast their vote.
How are Blockchain And Distributed Ledger Different?
Blockchain and Distributed Ledger Technology are considered as same, but there are some differences between these two technologies. Blockchain can be classified as a type of Distributed Ledger Technology. Blockchain is a type of DLT, but every Distributed Ledger can not be called a blockchain.
Blockchain is the parent technology of DLT. But the idea behind them is the same. Blockchain is the advanced version of Distributed Ledger Technology with many useful functionalities. Developers have many other variants of DLTs in the technology world. However, they need to have the many real-life implementations and applications that Blockchain has been able to do.
Final Word
Blockchain technology and decentralization have emerged as transformative forces, revolutionizing how we govern and organize. The distributed ledger technology of Blockchain has introduced new possibilities for transparency, trust, and efficiency in various sectors. As we conclude this blog on Blockchain and decentralization, let us reflect on their profound impact on governance and organization.
Blockchain's inherent characteristics, such as immutability, transparency, and cryptographic security, provide a foundation for building trust and accountability in governance. Blockchain empowers individuals and communities by enabling decentralized decision-making and fostering more inclusive and participatory governance models.
