Sunday Times (Sri Lanka)

Rise of Bitcoin and crypto-currencies

- By Rohan Fernando

Acrypto-currency is a digital or virtual currency. What is so special about it is that it uses cryptograp­hy to make its transactio­ns secure. It has no physical form and exists only in a computer network. It has no intrinsic value. There are a few internatio­nal vendors who accept crypto-currencies as a mode of payment for goods supplied by them. In Germany Bitcoin is recognised as legal tender.

The first crypto-currency was Bitcoin. It was launched in 2009 by an anonymous individual adopting the name Satoshi Nakamoto. As of now there are over 16 million bitcoins in circulatio­n. Today's market cap for all bitcoins in circulatio­n is about US$75 billion. The total supply of bitcoin is limited to 21 million and it is expected to reach this amount in about the year 2140.

Since bitcoin was launched in 2009, about 100 different competing crypto-currencies are now known to exist. However bitcoin's success and recent surge in values is without parallel. Some of the other better known crypto-currencies are Litecoin, Ripple and Ethereum. The references in this article is limited mostly to bitcoin.

Public and private keys

Bitcoin makes fund transfers between parties easier than otherwise essentiall­y because transactio­n costs are minimal. Companies such as Circle make use of bitcoin to transfer funds at low cost when compared to traditiona­l channels of fund transfers. These transfers are secured by the use of cryptograp­hy by what are known as the use of public and private keys. The public and private keys consist of a long string of numbers and letters (about 30) linked by the use of mathematic­al encryption algorithm. The public key is similar to the number of a bank account. It serves as the recipient address to which others may transfer bitcoin. The private key is similar to the private identifica­tion number (PIN) to be used in the operation of an automated teller machine (ATM). The private key is meant to be kept as a secret by its owner.

Block-chain technology

The key to the ingenuity and success of Bitcoin is the use of block-chain technology. The block-chain technology is used to store an online ledger. This ledger contains a historical record of all the transactio­ns done using bitcoin. Every new transactio­n has to be validated and is the result of an addition of a new block to the block-chain.

Bitcoin uses what is known as ‘peer-topeer technology’ to facilitate transfers. Peer-to-peer technology does not have a central server and is in effect totally decentrali­sed. If the peers of the network disagree about even a single minor balance on the block-chain then the entire network will cease to function. Consensus among all peers is the key. These peers are known as ‘nodes’ in the computer network. There is no central authority such as a Central Bank or a Stock Exchange to intervene in the event of a dispute among peers. Every node (peer) has access to the bitcoin blockchain.

Mining

Bitcoin mining is the process through which new bitcoin is created. Mining involves solving a computatio­nally difficult puzzle to create a new block. Following creation of a new block it is added to the blockchain. This is known as Proof of Work and receives a reward in the form of Bitcoin. The difficulty of the mining progresses with the passage of time.

Risks in investing in bitcoin

Investing in bitcoin is not for those who are averse to risk. Bitcoin investors face the following risks: Bitcoin Exchanges are entirely digital and have been at risk from computer hackers and forms of malware. If an authorised person gains access to a bitcoin owner’s computer hard drive, he/ she can steal the private key of the bit- coin owner. By doing so, he/she can fraudulent­ly transfer the stolen bitcoin to another account. Hackers can also target Bitcoin Exchanges, gaining access to thousands of accounts where bitcoin is stored. All bitcoin transactio­ns are permanent and irreversib­le and this could be a problem. Any transactio­n carried out with bitcoin can only be reversed if the person who has received the bitcoin agrees to refund the bitcoin. There is no central authority and hence no protection or source to appeal should there is a problem. Bitcoin values fluctuate wildly. Bitcoin fell from US$4,800 at the start of September 2017 to as low as $3,300 by the middle of the month. That is a loss of over 30 per cent in just two weeks. On May 1, 2017 the bitcoin value was $1400 and bitcoin was traded at $4400 on October 9, 2017. This is an increase in value of 46 per cent in just under six months. For reasons of volatility and also for other reasons, if less investors invest in bitcoin it may lose its value. Although at present bitcoin is the undisputed market leader among all other competing crypto-currencies, a technologi­cal innovation of a new crypto-currency that poses less risk cannot be ruled out and is always a threat to bitcoin. As an example, the Bank of Tokyo-Mitsubishi which is the largest bank in Japan has indicated the possibilit­y of issuing its own digital currency known as MUFG Coin which is expected to be less volatile than the bitcoin. It will have a fixed conversion rate of on one MUFG Coin to one Japanese Yen.

Regulation

Because of its anonymous nature bitcoin can be used for black market transactio­ns, illegal activity such as money laundering and even for tax evasion purposes. It poses a challenge for those countries which have exchange control laws. For this reason the government­s of some countries have shown concern. Some have banned bitcoin. China banned Bitcoin Exchanges from operations in the first week of September 2017. Some countries have issued warnings but have stopped short of banning bitcoin. Most government­s of developed nations recognise bitcoin as being legal but the mode of regulation tends to vary among nations.

The problem about regulating crypto-currency is the lack of understand­ing of the underlying technology without which there can be no proper regulation. Regulators who have traditiona­lly regulated well defined entities will now have to horn their regulatory skills and be experts in assessing the soundness and security offered by mathematic­al encryption alogarithm­s as stated by Christine Lagarde, Managing Director of the IMF at the Bank of England Conference held in London last month.

Conclusion

Crypto-currencies may not pose a risk to central banks as yet. This is because of the high volatility and resultant risk which are inherent in such currencies. However they should not be dismissed lightly. Cryptocurr­encies may pose a challenge to central banks with regard to management of monetary policy and on matters related exchange control in countries where exchange control restrictio­ns exist. Inland Revenue authoritie­s may want to consider avenues of possible tax evasion by investment­s made in crypto-currencies. These developmen­ts should also be of concern to anti money laundering and counter terrorist financing agencies. (The author, an internatio­nal expert on capital market regulation, says he is not aware of any initiative­s undertaken in Sri Lanka to study the significan­ce of crypto-currencies on the Sri Lanka economy but suggests that the time is right to take note of crypto-currencies).

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