Cryptocurrencies and Their Functionality across Different Types of Blockchains

Although blockchain technology can be applied differently to serve multiple functions, cryptocurrency is still the most popular. Digital assets are widely used for payments, cross-border transactions, and investments. In addition, these virtual currencies serve entertainment purposes, with assets like Bitcoin (BTC) used on Bitcoin casinos as a unit of payment to place bets and withdraw earnings. Many of these online establishments also offer exciting perks, including wager cashback, fast transaction speeds, and anonymity, all through crypto. Cryptocurrencies are also being used increasingly in everyday purchases, with a growing number of household names accepting them, for example Tesla allowing Dogecoin as a payment method to buy one of its electric vehicles. 

However, while cryptocurrencies are crucial, their underlying blockchains are also essential and may determine an asset’s functionality.

Permissionless Blockchains

A permissionless blockchain is a network that does not restrict participants. Since it is decentralized, the network allows anyone to validate transactions or mine crypto. A permissionless blockchain democratizes its processes, ensuring a high level of transparency and trustlessness since no single entity holds control.

Cryptocurrencies on permissionless blockchains include BTC and Ether (ETH). Bitcoin, the first major decentralized blockchain, was designed as a peer-to-peer cash system that allows users to send and receive funds without intermediaries. Ethereum also performs the same function and supports the widespread usage of decentralized applications (DApps)

A major advantage of permissionless blockchains is security because the network and all recorded transactions on the ledger are transparent. This promotes transparency and ensures accountability among all participants. Unfortunately, many permissionless networks struggle with scalability, which increases charges and stretches transaction fees. They may also require extensive energy consumption, which makes operations expensive and may be detrimental to the environment.

Permissioned Blockchains

Unlike a permissionless network, permissioned blockchains are restricted, limiting the number of participants validating blockchain transactions. These networks are used mainly by organizations or authorities that need to maintain high control over their processes. While a permissioned network is restrictive, the blockchain ledger may be publicly available. Examples include Hyperledger Fabric and R3’s Corda.

Crypto transaction efficiency can be high in permissioned blockchains because of the limited number of validators. Participants also enjoy increased privacy, which is beneficial for sensitive data. Also, the control exerted over the network helps to enforce compliance and guarantee adherence to internal policies. However, the mode of operation increases concerns around centralization and leads to trust issues among participating entities.

Private Blockchains

A private blockchain is a closed blockchain mainly used by an organization for internal processes and functions. Entities that use private blockchains prioritize crypto transaction speed, security, and privacy, and do not require external contribution for transaction validation and other operations.

Private blockchains boast high efficiency and can process cost-effective crypto transactions instantaneously. The transactions are also highly secure since the organization can impose its own security measures as much as may be required. Furthermore, organizations can quickly enforce measures to ensure regulatory compliance and reduce risks. However, like permissioned blockchains, the risk of centralization is high. Also, the blockchain’s closed nature does not encourage accountability and transaction transparency.

Hybrid Blockchains

A hybrid blockchain combines features of public and private networks. Organizations can use a hybrid blockchain to allow private and permission-based access on a need-to-know basis. While data on hybrid blockchain may not be primarily public, verification can be permitted where necessary. Although the blockchain is controlled by an organization or private entity, transactions are still immutable.

Hybrid blockchains are largely immune to external attacks because of their private nature. Also, the transactions are cheap and fast, which offers high efficiency. Organizations like real estate companies can use a hybrid blockchain to privately run their operations on a network while allowing controlled public access to limited information. However, like private blockchains, hybrid networks are not very transparent. In addition, they require careful design and governance and may be more complex to manage.

Consortium Blockchains

A consortium blockchain is a network jointly managed by multiple organizations. In some ways, a consortium blockchain functions like a hybrid blockchain because although select entities privately control it, some level of decentralization is required for effective collaboration. An example is the JPM Coin from financial services giant JP Morgan, which runs on the Quorum consortium blockchain. JPM Coin caters to instant and secure payments between institutional clients of the involved companies.

Consortium blockchains help partnering organizations reduce the risk of centralization by distributing control. They are also scalable because participants involved in the network’s consensus process are restricted. In addition, since the pool of participants is limited, privacy and security are ensured. However, managing a consortium blockchain requires that all entities are in agreement, which may be a challenging goal to achieve.

Conclusion: Choosing the Right Blockchain for Your Crypto

The different types of blockchain serve unique functions and can support various types of cryptocurrencies. This means that the choice of a blockchain network for a cryptocurrency mostly depends on the project’s needs and goals. For instance, permissionless blockchains are great for cryptocurrencies that require trustlessness and decentralization, while permissioned blockchains work for cryptocurrencies where control is essential. To make the right decision, developers and project teams must understand the pros and cons of each type and also specify the project’s aim and objective so that the blockchain can effectively cater to the crypto’s requirements.

Key Takeaways

• Permissionless Blockchain: Unrestricted networks best for cryptocurrencies that prioritize transparency and decentralization. Suitable for non-fungible tokens (NFTs), cross-border remittances, and decentralized finance (DeFi).
• Permissioned Blockchain: Restricted network suited for control, efficiency, and privacy. Ideal for banking and supply chain management.
• Private Blockchain: Restricted blockchain for internal usage and ideal for internal auditing and corporate finance.
• Hybrid Blockchain: A combination of public and private features, which serves functionalities such as cross-border payments, healthcare data management, and central bank digital currencies (CBDCs).
• Consortium Blockchains: Jointly-managed blockchain, best-suited for collaboration between organizations and ideal for supply chain finance and cross-border trade.