Understanding Public Blockchain Technology

Algernon Percy Willoughby10/10/23 01:10

Understanding Public Blockchain Technology

Understanding Public Blockchain TechnologyUnderstanding Public Blockchain Technology


Public blockchain is a decentralized technology that enables secure and transparent transactions without the need for intermediaries. It operates on a distributed ledger system, where each participant in the network has access to a copy of the ledger, ensuring transparency and immutability. The underlying technology of public blockchains has been gaining popularity due to its potential to transform various industries, including finance, supply chain management, healthcare, and more.

Understanding public blockchain technology is crucial for anyone interested in this field. It involves concepts such as transaction confirmation time and privacy protection, which are essential for maintaining the integrity of the network. As public blockchains become more prevalent, it is important to have a clear understanding of how they work and their potential applications.

In this blog post, we will delve deeper into the underlying technology of public blockchains and explore two critical aspects: transaction confirmation time and privacy protection. We will also discuss the popularity of public blockchains and their potential impact on various industries. By the end of this post, you will have a better understanding of how public blockchains work and their potential applications in various fields.

Transaction Confirmation Time

Public blockchains are designed to facilitate secure and transparent transactions in a decentralized manner. However, the time it takes for a transaction to be confirmed can vary depending on several factors. In this section, we will discuss the factors that affect transaction confirmation time and compare the confirmation times of different public blockchains.

Factors affecting transaction confirmation time

The two primary factors that affect transaction confirmation time in public blockchains are network activity and consensus mechanism.

Network activity refers to the number of transactions being processed by the network at any given moment. When there is a high volume of transactions, it can take longer for each transaction to be confirmed due to competition for limited processing resources.

Consensus mechanism refers to the process by which nodes on the blockchain network agree on which transactions should be added to the blockchain. Different public blockchains use different consensus mechanisms, such as proof-of-work (PoW), proof-of-stake (PoS), or delegated proof-of-stake (DPoS). Each mechanism has its own advantages and disadvantages when it comes to transaction confirmation time.

For example, Bitcoin uses PoW as its consensus mechanism, which requires miners to solve complex mathematical problems in order to add new blocks to the blockchain. This process can take several minutes or even hours, depending on network activity and computing power.

In contrast, Ethereum is currently transitioning from PoW to PoS, which is expected to significantly reduce transaction confirmation times. PoS allows validators with a stake in the network's native cryptocurrency (in this case, Ether) to validate new blocks based on their share of total stake rather than competing through computational power like in PoW.

Comparison of transaction confirmation time between different public blockchains

The table below compares average transaction confirmation times for three popular public blockchains: Bitcoin, Ethereum, and Ripple.

Blockchain Average Confirmation Time
Bitcoin 10-60 minutes
Ethereum 15 seconds - 2 minutes
Ripple 4 seconds

As you can see from the table above, Ripple has by far the fastest average transaction confirmation time among these three public blockchains. This is because Ripple uses a unique consensus mechanism called XRP Ledger Consensus Protocol that allows for near-instantaneous settlement of transactions.

Privacy Protection in Public Blockchains

Privacy protection is a crucial aspect of public blockchains, as they are designed to be transparent and open to all participants. However, this transparency can also lead to the exposure of sensitive information, such as transaction details and user identities. To address this issue, various methods have been developed for achieving privacy protection in public blockchains.

Methods for achieving privacy protection


Cryptography is a widely used method for achieving privacy protection in public blockchains. It involves the use of mathematical algorithms to encrypt data and ensure that only authorized parties can access it. One common cryptographic technique used in public blockchains is known as "public-key cryptography," which involves the use of two keys - a private key and a public key - to encrypt and decrypt data.

Another popular cryptographic technique used in public blockchains is known as "hashing." Hashing involves converting data into a fixed-length string of characters that cannot be reversed or decrypted. This makes it difficult for unauthorized parties to access sensitive information, as they would need to know the original data in order to reverse the hash function.

Zero-knowledge proofs

Zero-knowledge proofs are another method for achieving privacy protection in public blockchains. They allow users to prove that they possess certain information without revealing any additional details about that information. For example, a user could prove that they have sufficient funds for a transaction without revealing their account balance or other sensitive information.

Zero-knowledge proofs work by allowing one party (the prover) to demonstrate knowledge of a secret value or fact to another party (the verifier), without revealing any additional information about that value or fact. This is achieved through complex mathematical algorithms that enable the prover to generate a proof that can be verified by the verifier without exposing any additional details.

Popularity of Public Blockchains

Public blockchains have gained immense popularity in recent years, with many businesses and individuals adopting them for various purposes. Some of the most popular public blockchains include Bitcoin, Ethereum, and Litecoin. One of the reasons behind their popularity is their decentralized nature, which means that no single entity has control over the network. This allows for greater transparency and security in transactions.

Moreover, public blockchains are open to anyone who wants to participate in them. This makes them accessible to people from all over the world, regardless of their location or financial status. The fact that they are not controlled by any central authority also means that they are resistant to censorship and manipulation.

Another factor contributing to the popularity of public blockchains is their ability to facilitate fast and secure transactions. Transaction confirmation time can vary depending on the network's activity and consensus mechanism, but in general, public blockchains offer faster transaction times than traditional financial systems. This makes them ideal for use cases such as cross-border payments and remittances.

Finally, privacy protection is another important concern that has contributed to the popularity of public blockchains. While transactions on a public blockchain are visible to everyone on the network, there are various methods for protecting user privacy such as cryptography and zero-knowledge proofs.


In conclusion, understanding the underlying technology of public blockchains is crucial for anyone interested in blockchain technology. Public blockchains offer a decentralized and transparent platform for secure transactions, but there are still challenges that need to be addressed. Transaction confirmation time can vary depending on the network's activity and consensus mechanism, which can impact the user experience. However, with advancements in technology such as sharding and off-chain solutions, transaction speeds can be improved. Privacy protection is also an important concern in public blockchains, and while cryptography and zero-knowledge proofs provide some solutions, further research and development are needed to ensure complete privacy protection.

Despite these challenges, public blockchains continue to gain popularity due to their transparency, security, and potential for innovation. The rise of decentralized finance (DeFi) applications has shown the potential of public blockchains beyond just cryptocurrency transactions. With more use cases emerging every day, it's clear that public blockchain technology has a bright future ahead.

As with any emerging technology, there are risks involved in investing or developing on public blockchains. It's important to do your own research and understand the potential risks before making any decisions. However, with proper precautions and a solid understanding of the underlying technology, public blockchain technology offers exciting opportunities for innovation and growth.

Overall, understanding the underlying technology of public blockchains is essential for anyone looking to get involved in this exciting field. From transaction confirmation time to privacy protection, there are many factors to consider when using or developing on public blockchains. With continued research and development, we can overcome these challenges and unlock the full potential of this revolutionary technology.

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