Is Bitcoin Really Un-Tethered?

119 Pages Posted: 25 Jun 2018

John M. Griffin

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University of Texas at Austin - Department of Finance

Amin Shams

Ohio State University, Fisher College of Business

Date Written: October 28, 2019

Abstract

This paper investigates whether Tether, a digital currency pegged to the U.S. dollar, influenced Bitcoin and other cryptocurrency prices during the 2017 boom. Using algorithms to analyze blockchain data, we find that purchases with Tether are timed following market downturns and result in sizable increases in Bitcoin prices. The flow is attributable to one entity, clusters below round prices, induces asymmetric autocorrelations in Bitcoin, and suggests insufficient Tether reserves before month-ends. Rather than demand from cash investors, these patterns are most consistent with the supply-based hypothesis of unbacked digital money inflating cryptocurrency prices.

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