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Public, private and permissioned blockchains compared

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Public, private and permissioned blockchains compared

Public, private and authorized: an overview

Public blockchains allow access to anyone; private blockchains are available to selected or authorized users; Permissioned blockchains have different levels of permissions or user roles.

Many cryptocurrencies are built on open-source public blockchains. Others are permissioned as they can be used by anyone, but roles are assigned and only specific users can make changes.

Private and permissioned blockchains are generally used by organizations or businesses with specific needs.

Key points

  • In a public blockchain, anyone can join and participate in the core activities of the network.
  • A private blockchain allows only selected and verified participants; the operator has the right to overwrite, modify or delete entries on the blockchain.
  • Permissioned blockchains assign specific roles or permissions to various users on the network.

Public blockchain

An audience blockchain it is one where anyone is free to join and participate in the core activities of the blockchain network. Anyone can read, write, or control ongoing activity on a public blockchain network, which helps achieve the self-governing, decentralized nature often touted when talking about cryptocurrency blockchains.

Advantages

A public network operates under an incentive scheme that encourages new participants to join. Public blockchains offer a particularly valuable solution from the perspective of a truly decentralized, democratized, and authority-free operation.

Public blockchains are extraordinarily valuable because they can serve as the backbone for almost anyone decentralized solution. Additionally, the vast number of network participants who join a secure public blockchain keeps it safe from data breaches, hacking attempts, or other cybersecurity issues. The more participants, the more secure a blockchain is.

Public blockchains can be secured with automatic validation methods and cryptography that prevent individual entities from changing information in the chain (such as cryptocurrency blockchains), or can allow anyone to make changes.

Disadvantages

One concern with public blockchains is security. Some designers have solved this using a competitive, distributed block/reward validation/proposal system, while others have solved it using a collateralized system.

Other issues include the lack of complete privacy and anonymity. Public blockchains allow anyone to view transaction amounts and the addresses involved. If the owners of the address are revealed, the user loses their anonymity.

Public blockchains also attract participants who may not be honest in their intentions. Most public blockchains are designed for cryptocurrencies which, due to the nature of their value, are a prime target for hackers and thieves.

Private blockchain

Participants can join a private blockchain network only through an invitation where their identity or other requested information is authentic and verified. Validation is performed by the network operator(s) or by a clearly defined protocol implemented by the network via smart contracts or other automated approval methods.

Therefore, private blockchains control who is allowed to participate in the network. The owner or operator has the right to overwrite, modify or delete necessary entries on the blockchain as required or as he sees fit or make programming changes.

Advantages

A private blockchain is not decentralized. It’s a distributed ledger which works as a closed database protected by cryptographic concepts and the needs of the organization. Only those with permission can run a full node, make transactions, or validate/authenticate changes to the blockchain.

By reducing the focus on protecting user identities and promoting transparency, private blockchains prioritize efficiency and immutability, the state in which you cannot change.

These are important features in procurement, logistics, payroll, finance, accounting and many other business and commercial areas.

Disadvantages

Although designed specifically for enterprise applications, private blockchains lose many of the valuable attributes of permissionless systems simply because they are not widely applicable. Instead, they are built to perform specific tasks and functions.

In this regard, private blockchains are susceptible to data breaches and other security threats. This is because there are generally a limited number of validators used to reach consensus on transactions and data if a consensus mechanism exists. In a private blockchain there may not be a need for consensus but only for the immutability of the data entered.

Blockchain permissioned

Permissioned blockchains generally have similar features to public and private blockchains, with many customization options.

Advantages

The benefits of permissioned blockchain include the ability to allow anyone to join the permissioned network after a proper identity verification process. Some grant special, designated permissions to perform only specific tasks on a network. This allows participants to perform particular functions such as reading, accessing or entering information on the blockchain.

Permissioned blockchains enable many functions, but the most interesting one for businesses is Blockchain as a Service (BaaS)—a blockchain designed to be scalable for the needs of many businesses or businesses that vendors rent to other businesses.

Blockchain-as-a-Service reduces costs for many companies that can benefit from using blockchain technology in their business processes.

For example, let’s say a company wants to improve the transparency and accuracy of its accounting processes and financial reporting. It could rent blockchain accounting services from a BaaS provider. Blockchain would provide an interface where entries are made by end users and then automate the rest of the accounting processes using encryption, verification and consensus techniques.

This way there would be fewer errors and there would be no way for someone to alter the financial data after entering it. As a result, financial reports for management and executives become more accurate, and blockchain is accessible to view and generate real-time financial reports.

The company could also choose to have blockchain and supporting systems automate invoicing, payments, accounting and tax reporting.

Disadvantages

The disadvantages of permissioned blockchains mirror those of public and private blockchains, depending on how they are configured. One major drawback is that because permissioned blockchains require internet connections, they are vulnerable to hackers. By design, some may use immutability techniques such as cryptographic security measures and validation via consensus mechanisms.

While most blockchains are believed to be unhackable, they do have weaknesses without proper precautions. Cryptocurrency theft occurs when applications and supporting programs on a blockchain network are hacked and private keys are stolen. Even permissioned blockchains suffer from this weakness because the networks and applications that connect to blockchain services depend on security measures that can be bypassed.

What are private blockchains?

Private blockchains are distributed ledgers available only to those who have been given express permission to have specific levels of access or abilities on a blockchain.

Are there authorized Blockchains?

Many businesses have found utility and value in permissioned blockchains. For example, Walmart uses a customized version of Hyperledger Fabric, created as an open source project by IBM and the Linux Foundation for enterprise use, to trace food origins much faster than it could previously.

What is the Difference Between Permissioned and Private Blockchain?

A private blockchain is one where only specific users have access and capabilities and is generally only used by the entity to which it belongs. A permissioned blockchain is one in which multiple users are granted permissions and capabilities.

The bottom line

Public blockchains allow anyone to participate. Permissioned blockchains create different roles and have known users. Private blockchains are used by entities that need a secure ledger, allowing access only to those who need it.

The comments, opinions and analyzes expressed on Investopedia are for online information purposes. Read ours warranty and exclusion of liability for more information.

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Bitcoin (BTC) Price Crashes as Donald Trump’s Win Odds Dip

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Stephen  Alpher

Markets received nominally good news on Thursday morning, with the US ISM manufacturing PMI for July falling much more than economists expected, sending interest rates to multi-month lows across the board. Additionally, initial jobless claims in the US jumped to their highest level in about a year. Taken together, the data adds to the sentiment that the US is on the verge of a cycle of monetary easing by the Federal Reserve, which is typically seen as bullish for risk assets, including bitcoin.

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Terra Blockchain Reboots After Reentry Attack Leads to $4M Exploit

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Terra Blockchain Reboots After Reentry Attack Leads to $4M Exploit

Please note that our Privacy Policy, terms of use, cookiesAND do not sell my personal information has been updated.

CoinDesk is a awarded press agency that deals with the cryptocurrency sector. Its journalists respect a rigorous set of editorial policiesIn November 2023, CoinDesk has been acquired from the Bullish group, owner of Bullisha regulated digital asset exchange. Bullish Group is majority owned by Block.one; both companies have interests in a variety of blockchain and digital asset businesses and significant digital asset holdings, including bitcoin. CoinDesk operates as an independent subsidiary with an editorial board to protect journalistic independence. CoinDesk employees, including journalists, are eligible to receive options in the Bullish group as part of their compensation.

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$6.8M Stolen, ASTRO Collapses 60%

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$6.8M Stolen, ASTRO Collapses 60%

In the latest news in the blockchain industry, there has been a turn of events that has severely affected Terra and its users and investors, with the company losing $6.8 million. The attack, which exploited a reentry vulnerability in the network’s IBC hooks, raises questions about the security measures of the once celebrated blockchain protocol.

A web3 security company, Cyvers Alerts reported that the exploit occurred on July 31st and caused the company to lose 60 million ASTRO, 3.5 million USDC500,000 USDTand 2. 7 BitcoinThe flaw was discovered in April and allows cybercriminals to make payments non-stop by withdrawing money from the network.

Earth’s response

Subsequently, to the hack employed on the Terra blockchain, its official X platform declared the Suspension network operations for a few hours to apply the emergency measure. Finally in its sendTerra’s official account agreed, sharing that its operations are back online: the core transactions that make up the platform are now possible again.

However, the overall value of the various assets lost in the event was unclear.

Market Impact: ASTRO Crashes!

The hack had an immediate impact on the price of ASTRO, which dropped nearly 60% to $0.0206 following the network shutdown. This sharp decline highlights the vulnerability of token prices to security breaches and the resulting market volatility.

This incident is not the first time Terra has faced serious challenges. Earlier this year, the blockchain encountered significant problems that called into question its long-term viability. These repeated incidents underscore the need for stronger security measures to protect users’ assets and maintain trust in the network.

The recent Terra hack serves as a stark reminder of the ongoing security challenges in the blockchain space. As the platform works to regain stability, the broader crypto community will be watching closely.

Read also: Record Cryptocurrency Theft: Over $1 Billion Stolen in 2024

This is a major setback for Terra. How do you think this will impact the blockchain industry?



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Luxembourg proposes updates to blockchain laws | Insights and resources

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Luxembourg proposes updates to blockchain laws | Insights and resources

On July 24, 2024, the Ministry of Finance proposed Blockchain Bill IVwhich will provide greater flexibility and legal certainty for issuers using Distributed Ledger Technology (DLT). The bill will update three of Luxembourg’s financial laws, the Law of 6 April 2013 on dematerialised securitiesTHE Law of 5 April 1993 on the financial sector and the Law of 23 December 1998 establishing a financial sector supervisory commissionThis bill includes the additional option of a supervisory agent role and the inclusion of equity securities in dematerialized form.

DLT and Luxembourg

DLT is increasingly used in the financial and fund management sector in Luxembourg, offering numerous benefits and transforming various aspects of the industry.

Here are some examples:

  • Digital Bonds: Luxembourg has seen multiple digital bond issuances via DLT. For example, the European Investment Bank has issued bonds that are registered, transferred and stored via DLT processes. These bonds are governed by Luxembourg law and registered on proprietary DLT platforms.
  • Fund Administration: DLT can streamline fund administration processes, offering new opportunities and efficiencies for intermediaries, and can do the following:
    • Automate capital calls and distributions using smart contracts,
    • Simplify audits and ensure reporting accuracy through transparent and immutable transaction records.
  • Warranty Management: Luxembourg-based DLT platforms allow clients to swap ownership of baskets of securities between different collateral pools at precise times.
  • Tokenization: DLT is used to tokenize various assets, including real estate and luxury goods, by representing them in a tokenized and fractionalized format on the blockchain. This process can improve the liquidity and accessibility of traditionally illiquid assets.
  • Tokenization of investment funds: DLT is being explored for the tokenization of investment funds, which can streamline the supply chain, reduce costs, and enable faster transactions. DLT can automate various elements of the supply chain, reducing the need for reconciliations between entities such as custodians, administrators, and investment managers.
  • Issuance, settlement and payment platforms:Market participants are developing trusted networks using DLT technology to serve as a single source of shared truth among participants in financial instrument investment ecosystems.
  • Legal framework: Luxembourg has adapted its legal framework to accommodate DLT, recognising the validity and enforceability of DLT-based financial instruments. This includes the following:
    • Allow the use of DLT for the issuance of dematerialized securities,
    • Recognize DLT for the circulation of securities,
    • Enabling financial collateral arrangements on DLT financial instruments.
  • Regulatory compliance: DLT can improve transparency in fund share ownership and regulatory compliance, providing fund managers with new opportunities for liquidity management and operational efficiency.
  • Financial inclusion: By leveraging DLT, Luxembourg aims to promote greater financial inclusion and participation, potentially creating a more diverse and resilient financial system.
  • Governance and ethics:The implementation of DLT can promote higher standards of governance and ethics, contributing to a more sustainable and responsible financial sector.

Luxembourg’s approach to DLT in finance and fund management is characterised by a principle of technology neutrality, recognising that innovative processes and technologies can contribute to improving financial services. This is exemplified by its commitment to creating a compatible legal and regulatory framework.

Short story

Luxembourg has already enacted three major blockchain-related laws, often referred to as Blockchain I, II and III.

Blockchain Law I (2019): This law, passed on March 1, 2019, was one of the first in the EU to recognize blockchain as equivalent to traditional transactions. It allowed the use of DLT for account registration, transfer, and materialization of securities.

Blockchain Law II (2021): Enacted on 22 January 2021, this law strengthened the Luxembourg legal framework on dematerialised securities. It recognised the possibility of using secure electronic registration mechanisms to issue such securities and expanded access for all credit institutions and investment firms.

Blockchain Act III (2023): Also known as Bill 8055, this is the most recent law in the blockchain field and was passed on March 14, 2023. This law has integrated the Luxembourg DLT framework in the following way:

  • Update of the Act of 5 August 2005 on provisions relating to financial collateral to enable the use of electronic DLT as collateral on financial instruments registered in securities accounts,
  • Implementation of EU Regulation 2022/858 on a pilot scheme for DLT-based market infrastructures (DLT Pilot Regulation),
  • Redefining the notion of financial instruments in Law of 5 April 1993 on the financial sector and the Law of 30 May 2018 on financial instruments markets to align with the corresponding European regulations, including MiFID.

The Blockchain III Act strengthened the collateral rules for digital assets and aimed to increase legal certainty by allowing securities accounts on DLT to be pledged, while maintaining the efficient system of the 2005 Act on Financial Collateral Arrangements.

With the Blockchain IV bill, Luxembourg will build on the foundations laid by previous Blockchain laws and aims to consolidate Luxembourg’s position as a leading hub for financial innovation in Europe.

Blockchain Bill IV

The key provisions of the Blockchain IV bill include the following:

  • Expanded scope: The bill expands the Luxembourg DLT legal framework to include equity securities in addition to debt securities. This expansion will allow the fund industry and transfer agents to use DLT to manage registers of shares and units, as well as to process fund shares.
  • New role of the control agent: The bill introduces the role of a control agent as an alternative to the central account custodian for the issuance of dematerialised securities via DLT. This control agent can be an EU investment firm or a credit institution chosen by the issuer. This new role does not replace the current central account custodian, but, like all other roles, it must be notified to the Commission de Surveillance du Secteur Financier (CSSF), which is designated as the competent supervisory authority. The notification must be submitted two months after the control agent starts its activities.
  • Responsibilities of the control agent: The control agent will manage the securities issuance account, verify the consistency between the securities issued and those registered on the DLT network, and supervise the chain of custody of the securities at the account holder and investor level.
  • Simplified payment processesThe bill allows issuers to meet payment obligations under securities (such as interest, dividends or repayments) as soon as they have paid the relevant amounts to the paying agent, settlement agent or central account custodian.
  • Simplified issuance and reconciliationThe bill simplifies the process of issuing, holding and reconciling dematerialized securities through DLT, eliminating the need for a central custodian to have a second level of custody and allowing securities to be credited directly to the accounts of investors or their delegates.
  • Smart Contract Integration:The new processes can be executed using smart contracts with the assistance of the control agent, potentially increasing efficiency and reducing intermediation.

These changes are expected to bring several benefits to the Luxembourg financial sector, including:

  • Fund Operations: Greater efficiency and reduced costs by leveraging DLT for the issuance and transfer of fund shares.
  • Financial transactions: Greater transparency and security.
  • Transparency of the regulatory environment: Increased attractiveness and competitiveness of the Luxembourg financial centre through greater legal clarity and flexibility for issuers and investors using DLT.
  • Smart Contracts: Potential for automation of contractual terms, reduction of intermediaries and improvement of transaction traceability through smart contracts.

Blockchain Bill IV is part of Luxembourg’s ongoing strategy to develop a strong digital ecosystem as part of its economy and maintain its status as a leading hub for financial innovation. Luxembourg is positioning itself at the forefront of Europe’s growing digital financial landscape by constantly updating its regulatory framework.

Local regulations, such as Luxembourg law, complement European regulations by providing a more specific legal framework, adapted to local specificities. These local laws, together with European initiatives, aim to improve both the use and the security of projects involving new technologies. They help establish clear standards and promote consumer trust, while promoting innovation and ensuring better protection against potential risks associated with these emerging technologies. Check out our latest posts on these topics and, for more information on this law, blockchain technology and the tokenization mechanism, do not hesitate to contact us.

We are available to discuss any project related to digital finance, cryptocurrencies and disruptive technologies.

This informational piece, which may be considered advertising under the ethics rules of some jurisdictions, is provided with the understanding that it does not constitute the rendering of legal or other professional advice by Goodwin or its attorneys. Past results do not guarantee a similar outcome.

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