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Disadvantage of Blockchain

Pros and Cons of Blockchain Technology: An Ultimate Guide

What is Blockchain Technology?

The Internet has allowed people and businesses to collaborate in new ways via networks and communities, where individuals build, self-govern, and flourish. By facilitating a decentralized and transparent collaboration and value exchange within such setups, blockchain technology is writing a new chapter in the history of the internet. However, what precisely is blockchain? What are the advantages and disadvantages of blockchain technology? Let’s investigate.

Blockchain technology is a decentralized, distributed ledger that maintains a record of economic transactions over a network of computers or nodes. Blockchain uses decentralization and cryptographic hashing to make any digital asset’s history immutable, secure, and visible. Blockchain was introduced as an underlying technology for Bitcoin by Satoshi Nakamoto in 2008.

Here’s a list of the pros and cons of blockchain technology: 

Decentralized TrustScalability
Low Operational CostSecurity
No Single Point of
Enhanced Security
and Confidentiality
Reduced FraudSpeed

Pros of Blockchain Technology

Benefits of Blockchain
Source: NOWPayments, There are numerous advantages of Blockchain Technology.

1. Decentralized Trust

A blockchain allows the peer-to-peer transfer of value between parties without relying on a third party or a central authority. Since the data is stored over a decentralized network of servers after it gets validated via a consensus, the transacting parties do not need to know each other to transact, i.e., they operate in a trustless environment.  

2. Low Operational Cost

Since a blockchain eliminates the need for centralized servers to run the operations, the overhead costs decrease. There are no banking or payment processing costs involved as transactions happen directly over a blockchain without any intermediary or central authority involved. The contracts and transactions are integrated into the network and do not require human effort.

3. No Single Point of Failure

Being a distributed network, blockchain is highly secure and eliminates the possibility of a single point of failure. Your company’s entire network may be instantly destroyed if a hacker obtains access to the central server or database, but not in the can of a blockchain. With each node sharing the database, the network becomes secure and tamper-proof. 

4. Enhanced Security And Confidentiality

Enhanced Security And Confidentiality
Source: Freepik

Compared to centralized systems, blockchain technology, being decentralized, is intrinsically more secure. Any effort to change a record will be immediately apparent because copies and digital signatures are automatically compared. The data is protected from hackers by an additional degree of confidentiality as users of a blockchain network are not required to enter their personal and financial details. 

5. Reduced Fraud

Reduced Fraud
Source: Freepik

The advantages of blockchain technology make it perfect for financial companies looking to reduce forgeries. Any attempt to duplicate transactions is impossible because every transaction is validated and its provenance checked from the blockchain database via a consensus, eliminating the risk of manipulation or tampering. 

6. Quick Transactions

Transactions can be processed by blockchain significantly more quickly than traditional centralized banks as the processes are automated and occur directly between parties. Because of this, companies who use blockchain rather than banks can save a lot of time and costs. 

7. Transparent & Universal Recording System

Blockchain transactions are logged in a public ledger that anyone on the internet can access. Everyone can see how much money is in the wallet, but no one can tell who the owner is. A wallet may be connected to a person or a group. Transparency is a huge advantage of blockchain technology. 

8. Better Accessibility 

Anyone with a computer and an internet connection can join a blockchain network. Because it is decentralized, no one organization can control it, and everyone can contribute to it. If they have the necessary skills, anyone can contribute to a blockchain (add new information) or add new blocks via the mining process.

9. Prevents Double Spending 

Blockchains are public distributed ledgers where transactions involving Bitcoin are recorded and cryptographically validated by the majority of the network nodes. Every transaction on a blockchain is stored in its distributed database, thus providing an immutable and traceable record of transactions against which every new transaction can be validated via a consensus. 

10. Seamless Integration Into Existing Systems

Blockchain can be seamlessly integrated into external systems in two ways as an application platform or Blockchain-as-a-service (BaaS). While blockchain application platforms allow anyone to use the decentralized technology, BaaS allows businesses to connect directly with blockchain networks. BaaS gives greater control and is ideal for business organizations.

Cons of Blockchain Technology

Disadvantage of blockchain
Source: Day One Technologies | Blockchain Technology suffers from several disadvantages

1. Scalability

blockchain scalibility
Source: Freepik

Scalability is probably the greatest disadvantage of blockchain technology, given its incapability to handle transactions on a mass scale. Fewer transactions can be processed per second with blockchain technology, as every transaction needs to be validated by the majority of the nodes to be approved and become a part of the block. This leads to issues like network congestion and high transaction costs.  

2. Security

Blockchain is a distributed ledger that is open to the public, and any unfamiliar guest keeping an eye on your wallet can be drawn to it. Even though there are several ways to add encryption and privacy layers to permit your preferred privacy, the user awareness around them is minimal.

3. Cost

Blockchain technology uses a lot of energy due to the energy-intensive nature of consensus protocols, like Proof-of-Work, which it employs to validate transactions. Miners need strong rigs that use a lot of electricity since they must solve challenging mathematical problems to receive a reward. However, more efficient consensus protocols like Proof-of-stake and Proof-of-Authority are helping to solve this issue. 

4. Competitiveness

There is a lot of hype regarding these industries’ attempting to use blockchain. Businesses use this technology to squander their time, money, and efforts even when it is not useful for their industry, creating wasteful competition among them. 

5. Speed

The speed of blockchain technology is another important drawback. Blockchains need miners, in contrast to centralized databases, who use specialized software and solve computational puzzles in return for new crypto tokens. Blockchain transactions take longer to complete than traditional payment methods.  


This was all about the advantages and disadvantages of blockchain technology. It is a cutting-edge technology providing decentralized data storage and transmission. Even though it has some drawbacks, most can be overcome with proper development and implementation. The value of blockchain technology today lies in its capabilities as the greatest option for organizations looking to benefit from distributed ledger capabilities and its other advantages.

Frequently Asked Questions (FAQs)

1. What are the Advantages of Blockchain Technology? 

There are many advantages and disadvantages of blockchain technology. However, its advantages like verifiability, transparency, immutability, versatility, and security supersede its disadvantages.  

2. What are the Disadvantages of Blockchain Technology?

While there are several pros and cons of blockchain technology, its cons like lack of scalability, energy-intensive nature, lack of complete anonymity as the ledger are accessible to the public and transactions are traceable, and lack of speed for the need to collectively validate transactions are some issues that the technology needs to cope with.  

3. What is the Biggest Problem with Blockchain Technology? 

Despite the numerous pros and cons of blockchain technology, the biggest problem is its inability to scale to become a viable solution fit for mass-scale adoption. However, developments are being made in this regard. 

4. Can the Blockchain be Hacked? 

Although it is very difficult to hack a blockchain, an attack of a higher degree, such as the 51% attack, where the hackers get control over 51% or more network resources, can compromise a blockchain network. Blockchain being a highly distributed global network accords no such authority to a single entity. 

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