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Pros and cons of blockchain technology
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E-SPIN
Friday, 24 November 2017 / Published in Global Themes and Feature Topics

Pros and cons of blockchain technology

This article will discuss about pros and cons of blockchain technology that we need to understand. Here also, we highlighted the biggest pro and cons or advantages and disadvantages of blockchain.

The biggest Pros

Dissemination.

The core value of a blockchain is that it enables a database to be directly shared without a central administrator. Rather than having some centralized application logic, blockchain transactions have their own proof of validity and authorization to enforce the constraints. Hence, with the blockchain acting as a consensus mechanism to ensure the nodes stay in sync, transactions can be verified and processed independently.

But why is disintermediation good for us? Because a database is still a tangible thing even though is just bits and bytes. If the contents of a database are stored in the memory and disk of a particular computer system run by a third party even if it is a trusted organization like banks and governments, anyone who somehow got access to that system can easily corrupt the data within.

Thus the third-party organizations especially those who control important databases need to hire many people and design many processes to prevent that database being tampered with. Unavoidably, all this takes a great amount of time and money.

However, with blockchains, we can now replace these third-party organizations with a distributed database, locked down by clever cryptography. “Like so much that has come before, they leverage the ever-increasing capacity of computer systems to provide a new way of replacing humans with code. And once it’s been written and debugged, code tends to be an awful lot cheaper” (Gideon Greenspan).

Other pro is

Empowered
Users are in control of all their information and transaction.

High quality data
Blockchain data is complete, consistent, timely, accurate and widely available

Durability, reliability and longevity
Due to the decentralized networks, blockchain does not have a central point of failure and is better able to withstand malocious attacks

Process integrity
Users can trust that transaction will be executed exactly as the protocol commands removing the need for a trusted third party.

Transparency and immutability
Changes to public blockchain are publicly view-able by all parties creating transparency and all transaction are immutable, meaning they cannot be altered or deleted.

blockchain-advantages-disadvantages

The biggest con

Performance
Because of the nature of blockchains, it will always be slower than centralized databases. When a transaction is being processed, a blockchain has to do all the same things just like a regular database does, but it carries three additional burdens as well:

1. Signature verification. Every blockchain transaction must be digitally signed using a public-private cryptography scheme such as ECDSA. This is necessary because transactions propagate between nodes in a peer-to-peer fashion, so their source cannot otherwise be proven. The generation and verification of these signatures is computationally complex, and constitutes the primary bottleneck in products like ours. By contrast, in centralized databases, once a connection has been established, there is no need to individually verify every request that comes over it.

2. Redundancy. This isn’t about the performance of an individual node, but the total amount of computation that a blockchain requires. Whereas centralized databases process transactions once (or twice), in a blockchain they must be processed independently by every node in the network. So lots more work is being done for the same end result.

Other disadvantages are:

Nascent technology
Resolving challenges such as transaction speed, the verification process and data limit will be crucial in making blockchain widely applicable.

Uncertain regulatory status
Because modern currencies have always been created and regulated by national governments, blockchain and Bitcoin face a hurdle in widespread adoption by pre-existing financial instittions of its government regulatiion status remains unsettled.

Large energy consumption
The Bitcoin blockchain network’s miners are attempting 450 thousand trillion solution persecond in efforts to validate transaction, using substantial amounts of computer power.

Control, security and privacy
While solution exists, including private or permissioned blockchains and strong encryption, there are still cyber sexurity concerns that need to be addressed before the general public will entrust their personal data to a blockchain solution.

Cost
Blockchain offers tremendous savings in transaction costs and time but the high initial capital costos could be a deterrent.

Feel free to contact E-SPIN for Blockchain security and availability monitoring and application security testing (AST).

To know more about Blockchain, please click on the link below:

  1. The Blockchain considered as new web 3.0?
  2. Blockchain and perspective you need to understand
  3. Is blockchain tech the missing link for the success of IoT
  4. How 2018 is shaping up in blockchain technology
Tagged under: blockchain, blockchain security

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