Why Fixed Costs Matter for Proof-of-Work Based Cryptocurrencies

Rod Garratt & Maarten van Oordt
"Ensuring that the record of Bitcoin transactions is secure uses a lot of computational power. Miners, who supply this power to the Bitcoin network, earn transaction fees and new bitcoins. Ultimately, though, bitcoin miners will earn only fees as the number of new bitcoins slowly declines to zero. As mining rewards wane, some experts say that Bitcoin will become vulnerable to attacks. Will Bitcoin transactions remain secure in the future? Our analysis focuses on the...
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