Abstract
This paper explores when will occur and collapse in Bitcoin bubbles by applying generalized sup augmented Dickey–Fuller test method proposed by Phillips et al. (Testing for multiple bubbles: historical episodes of exuberance and collapse in the S&P 500. Singapore Management University, Working Paper, No. 04-2013, 2013). The results show that there are six explosive bubbles in China and five bubbles in U.S. market, mostly occur in the period of huge surges in Bitcoin price. This is consistent with the bubble model originated by Blanchard and Watson (Bubbles, rational expectations and financial markets. NBER Working Paper, No. 945 1982) that certain asset price is decomposed into fundamental and the bubble components. In particular, exogenous shocks, including foreign or domestic economic events lead to the origination of bubbles. Serious financial crisis may trigger long-term and large- scale bubbles, while relative not persistence (short-term) bubbles are caused by domestic particular components. It can be inferred that Bitcoin can be used as a hedge against market specific risk. Finally, Bitcoin bubbles would collapse due to the administrative intervention by economic authorities. Thereby, government should lead public expectation to keep the confidence to authority and reduce the speculation behavior to stabilize the asset price and financial market.
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Notes
The reason for the existence of price difference are recognized there is no central authority regulating the price. The arbitrary potentially exists, but it requires additional fees in setting up and verifying accounts at multiple exchanges and there is still the risk that the price differences will have normalized or even reversed by the time your transfer goes through.
Given the assumption of rational behavior and expectations, the price of an asset must simply reflect market fundamentals. Also, the price depends on information about current and future returns from this asset. Blanchard and Watson (1982) propose that a stochastic asset bubble occurs when speculators purchase a financial asset at a price above its fundamental value in the expectation of a subsequent capital gain. If such bubbles persist, investors are irrational in their failure to profit from the “overpriced” asset, which is referred as “irrational bubbles”. Deviations from this market fundamental value are taken as preliminary evidence of irrationality (Flood and Garber 1980).
Silk Road is a black-market shopping site using covert services. This website trades in Bitcoin, and the exchange rate is pegged to the dollar.
The block chain is a growing historical “book of records” containing full information about all transactions that take place in the network. Every BTC client keeps a complete copy of the block chain, stored locally in the form of raw binary data (Garcia et al. 2014).
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Li, ZZ., Tao, R., Su, CW. et al. Does Bitcoin bubble burst?. Qual Quant 53, 91–105 (2019). https://doi.org/10.1007/s11135-018-0728-3
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DOI: https://doi.org/10.1007/s11135-018-0728-3