Blockchain, permissionless/permissioned

Tan Gürpinar

Chapter 7 in Elgar Encyclopedia of Cryptocurrencies, Blockchain and DLT, 2026, pp 35-38 from Edward Elgar Publishing

Abstract: Permissionless blockchains operate in an open, decentralized manner allowing for unrestricted access and participation. These networks, like Bitcoin and Ethereum, ensure equal rights and responsibilities for all participants, enabling global interconnection and decentralized consensus. Consensus mechanisms such as proof-of-work and proof-of-stake are used to create a single source of truth and maintain network security and safety. In contrast, permissioned blockchains, such as Hyperledger Fabric and Corda, offer network access to selected participants or consortia, using consensus mechanisms like Practical Byzantine Fault Tolerance to prioritize efficiency, security, and data privacy for enterprise applications.

Keywords: Public blockchains; Private blockchains; Consortium blockchains; Proof-of-work; Proof-of-stake; Decentralized data management (search for similar items in EconPapers)
Date: 2026
ISBN: 9781035339952
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