In 2017, 比特币, a digital currency launched in 2009, monopolized international finance headlines. On 1st January 2017, a Bitcoin was worth 972 USD while one year later, on 1st January 2018, you would have needed to invest 14.000 USD to buy a single token, down from nearly 20.000 USD on 17 December 2017. Considering the same timeframe, its market capitalization rose from 15,5 billion to 233 billion US dollars, after having reached its peak on 17 December 2017 at 335 billion (Cryptocurrency Market Capitalizations).
Bitcoin, however, is just the tip of the iceberg. Underneath there is a whole universe of cryptocurrencies (nearly 1400) which value and market capitalization has skyrocketed in the last months of 2017. At the time of writing, on 8 January 2018, 40 cryptocurrencies have a market capitalization of 1 billion US dollars or more. As of 18 December 2017, they were 29.
The rise in the value of cryptocurrencies has sparked debates over their potential future consequences for and impacts on the international monetary system: some say that Bitcoin could be a “potential threat” to central-bank-issued fiat currencies (Don Tapscott, Ten cryptocurrency predictions for 2018 from the co-founder of the Blockchain Research Institute, 石英, 4 January 2018) such as the US Dollar (Danny Bradbury, Congressional Report Warns of Potential Bitcoin Threat to US Dollar, CoinDesk, 9 January 2014) while others, like Jamie Dimon, chief executive of JPMorgan Chase & Co., think that Bitcoin is “a fraud” (David Henry and Anna Irrera, JP Morgan’s Dimon says Bitcoin “is a fraud”, 路透社, 21 September 2017), which value will eventually collapse.
First of all, what is a cryptocurrency? According to the Cambridge English Dictionary, a cryptocurrency is “a digital currency produced by a public network, rather than any government, that uses cryptography to make sure payments are sent and received safely”. Indeed, cryptography is used to implement the blockchain technology, which is at the base of Bitcoin and other major cryptocurrencies.
This article will explain further what a cryptocurrency is, focusing on the most common underlying technology, the blockchain, and its implementation relative to the top two cryptocurrencies by market capitalization: Bitcoin and 以太坊 (respectively at 253 and 118 billion US dollars as of 9 January 2018). We shall also include in our analysis the third most-capitalized crypto: 波纹. It will thus underline commonalities and differences between the three cryptocurrencies, starting highlighting their potential advantages and dangers compared with classical international currencies. It will notably single out one of the main challenges characterizing the Bitcoin phenomenon: energy sustainability.
With the next article, we shall analyse the rise of Bitcoin and other cryptocurrencies, highlighting that climb’s main drivers. In conclusion, we shall try to understand if cryptocurrencies pose a long-term threat to traditional currencies and, therefore, to the US dollar supremacy over the international monetary system.
特色图片。The DigitalArtist, CC0 创意共享, 通过Pixabay
关于作者: Leonardo Frisani (MA Paris) focuses currently on challenges to the US Dollar supremacy. Beyond that, his specialisation is in international security, and his main interests are in geopolitics, macroeconomics, climate change, international energy and history.
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