The technology behind bitcoin could transform how the economy works

The blockchain lets people who have no particular confidence in each other collaborate without having to go through a neutral central authority. Simply put, it is a machine for creating trust.

.. One idea, for example, is to make cheap, tamper-proof public databases—land registries, say, (Honduras and Greece are interested); or registers of the ownership of luxury goods or works of art. Documents can be notarised by embedding information about them into a public blockchain—and you will no longer need a notary to vouch for them.

.. A trusted private ledger removes the need for reconciling each transaction with a counterparty, it is fast and it minimises errors. Santander reckons that it could save banks up to $20 billion a year by 2022. Twenty-five banks have just joined a blockchain startup, called R3 CEV, to develop common standards, and NASDAQ is about to start using the technology to record trading in securities of private companies.

.. These new blockchains need not work in exactly the way that bitcoin’s does. Many of them could tweak its model by, for example, finding alternatives to its energy-intensive “mining” process, which pays participants newly minted bitcoins in return for providing the computing power needed to maintain the ledger. A group of vetted participants within an industry might instead agree to join a private blockchain, say, that needs less security. Blockchains can also implement business rules, such as transactions that take place only if two or more parties endorse them, or if another transaction has been completed first.

.. The spread of blockchains is bad for anyone in the “trust business”—the centralised institutions and bureaucracies, such as banks, clearing houses and government authorities that are deemed sufficiently trustworthy to handle transactions. Even as some banks and governments explore the use of this new technology, others will surely fight it. But given the decline in trust in governments and banks in recent years, a way to create more scrutiny and transparency could be no bad thing.

.. The notion of shared public ledgers may not sound revolutionary or sexy. Neither did double-entry book-keeping or joint-stock companies. Yet, like them, the blockchain is an apparently mundane process that has the potential to transform how people and businesses co-operate

 

As America’s economic supremacy fades, the primacy of the dollar looks unsustainable

The United States accounts for 23% of global GDP and 12% of merchandise trade. Yet about 60% of the world’s output, and a similar share of the planet’s people, lie within a de facto dollar zone, in which currencies are pegged to the dollar or move in some sympathy with it. American firms’ share of the stock of international corporate investment has fallen from 39% in 1999 to 24% today. But Wall Street sets the rhythm of markets globally more than it ever did. American fund managers run 55% of the world’s assets under management, up from 44% a decade ago.

.. In 2008-09 the Fed reluctantly came to the rescue, acting as a lender of last resort by offering $1 trillion of dollar liquidity to foreign banks and central banks. The sums involved in a future crisis would be far higher. The offshore dollar world is almost twice as large as it was in 2007. By the 2020s it could be as big as America’s banking industry. Since 2008-09, Congress has grown wary of the Fed’s emergency lending. Come the next crisis, the Fed’s plans to issue vast swaplines might meet regulatory or congressional resistance. For how long will countries be ready to tie their financial systems to America’s fractious and dysfunctional politics?

We were better served by old-fashioned relationship-focused bank managers

Banking was then a career for those who did not quite make the grades required by the good universities. If they joined either of these two institutions, they might with diligence become branch managers after 20 years. The bank manager was a community figure who would base his (they were all men) lending decisions as much on his local knowledge and the character of the borrower as on figures. He expected to spend his career at the bank and retire with a generous pension to spend more time on the golf links where he had schmoozed his clients. It never crossed his mind, or those of his customers, that the bank he had joined would not continue forever in broadly its existing form.

 

.. Lawrence Summers (the former US Treasury secretary who experienced the transformation variously as academic, politician, university administrator and would-be central banker) described it thus: “In the last 30 years the field of investment banking had been transformed from a field that was dominated by people who were good at meeting clients at the 19th hole, to people who were good at solving very difficult mathematical problems that were involved in pricing derivative securities.” Professor Summers reported this shift with evident approval.

Yet these cleverer people managed things much less well than had their less intellectually distinguished predecessors. They were rarely as clever as they thought they were — or sufficiently clever to handle the complexities of the environment they had created.