A LOOPy model of inflation

Alex Tuckett

The Law of One Price (LOOP) is an old idea in economics. LOOP states that the same product should cost the same in different places, expressed in the same currency. The intuition is that arbitrage (buying a product where it is cheap and selling it where it is expensive) should bring prices back into line. Can LOOP help us understand UK inflation? Yes. I find EU prices have much higher explanatory power for UK prices than domestic cost pressures, and the effects of exchange rate changes last longer, but build more slowly than commonly assumed.

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Beyond blockchain: what are the technology requirements for a Central Bank Digital Currency?

Simon Scorer

What type of technology would you use if you wanted to create a central bank digital currency (CBDC) i.e. a national currency denominated, electronic, liability of the central bank? It is often assumed that blockchain, or distributed ledger technology (DLT), would be required; but although this could have some benefits (as well as challenges), it may not be necessary. It could be sensible to approach this issue the same way you would any IT systems development problem – starting with an analysis of requirements, before thinking about the solution that best meets these.

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Bitesize: The very volatile value of cryptocurrencies

John Lewis

Proponents of private cryptocurrencies argue they are a better store of value than traditional “fiat” currency. But even if a cryptocurrency’s value cannot be inflated away by large supply increases, that doesn’t automatically mean its value is stable in terms of ability to buy goods and services.

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Eliminating high denomination notes and making the mob miserable

Ronnie Driver

Economists usually talk about money serving three functions – a medium of exchange, a store of value, and a unit of account.  But the ability to make payments using commercial bank deposits, which account for the vast majority of money, has already divorced the physicality of notes from the concept of the medium of exchange. Inflation and non-remuneration renders physical money a poor store of value.  And the unit of account does not rely on physical cash.  So is there a specific role for physical paper money anymore?

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Central Bank Digital Currency: DLT, or not DLT? That is the question

Simon Scorer

The topics of central bank digital currency (CBDC) and distributed ledger technology (DLT) are often implicitly linked. The genesis of recent interest in CBDC was the emergence of private digital currencies, like Bitcoin, which often leads to certain assumptions about the way a CBDC might be implemented – i.e. that it would also need to use a form of blockchain or DLT. But would a CBDC really need to use DLT? In this post I explain that it may not be necessary to use DLT for a CBDC, but I also consider some of the reasons why it could still be desirable.

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Big Data jigsaws for Central Banks – the impact of the Swiss franc de-pegging

Olga Cielinska, Andreas Joseph, Ujwal Shreyas, John Tanner and Michalis Vasios

The Bank of England has now access to transaction-level data in over-the-counter derivatives (OTCD) markets which have been identified to lie at the centre of the Global Financial Crisis (GFC) 2007-2009. With tens of millions of daily transactions, these data catapult central banks and regulators into the realm of big data.  In our recent Financial Stability Paper, we investigate the impact of the de-pegging in the euro-Swiss franc (EURCHF) market by the Swiss National Bank (SNB) in the morning of 15 January 2015. We reconstruct detailed trading and exposure networks between counterparties and show how these can be used to understand unprecedented intraday price movements, changing liquidity conditions and increased levels of market fragmentation over a longer period.

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Bitesize: Periodicity of GBP/USD trading activities

Jihyoung Yi.

FX assets are traded continuously across the globe.  The majority of GBP/USD trades, however, are executed during typical trading hours in London and New York (NY). Saravelos and Grover (2016) find that: (i) FX moves during these hours are most highly correlated to the overall daily move; and (ii) there is statistically significant periodicity where GBP tends to depreciate in the London morning and appreciate in the NY afternoon against the US dollar.

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Central bank digital currency: the end of monetary policy as we know it?

Marilyne Tolle.

Central banks (CBs) have long issued paper currency. The development of Bitcoin and other private digital currencies has provided them with the technological means to issue their own digital currency. But should they?

Addressing this question is part of the Bank’s Research Agenda. In this post I sketch out how a CB digital currency – call it CBcoin – might affect the monetary and banking systems – setting aside other important and complex systemic implications that range from prudential regulation and financial stability to technology, operational and financial conduct.

I argue that taken to its most extreme conclusion, CBcoin issuance could have far-reaching consequences for commercial and central banking – divorcing payments from private bank deposits and even putting an end to banks’ ability to create money. By redefining the architecture of payment systems, CBcoin could thus challenge fractional reserve banking and reshape the conduct of monetary policy.

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