NATIONAL BUREAU OF ECONOMIC RESEARCH
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More (or Less) Economic Limits of the Blockchain

Joshua S. Gans, Neil Gandal

NBER Working Paper No. 26534
Issued in December 2019
NBER Program(s):Productivity, Innovation, and Entrepreneurship Program

This paper extends the blockchain sustainability framework of Budish (2018) to consider proof of stake (in addition to proof of work) consensus mechanisms and permissioned (where the number of nodes are fixed) networks. It is demonstrated that an economically sustainable network will involve the same cost regardless of whether it is proof of work or proof of stake although in the later the cost will take the form of illiquid financial resources. In addition, it is shown that regulating the number of nodes (as in a permissioned network) does not lead to additional cost savings that cannot otherwise be achieved via a setting of block rewards in a permissionless (i.e., free entry) network. This suggests that permissioned networks will not be able to economize on costs relative to permissionless networks.

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Document Object Identifier (DOI): 10.3386/w26534

 
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