What is bitcoin? A look at the digital currency

The currency has become popular enough that more than 300,000 daily transactions have been occurring recently, according to bitcoin wallet site blockchain.info. (AP)
Updated 21 May 2017

What is bitcoin? A look at the digital currency

NEW YORK: It is worth more than an ounce of gold right now, it is completely digital and it is the currency of choice for the cyberattackers who crippled computer networks around the world in recent days.
When the attackers’ “ransomware” sprang into action, it held victims hostage by encrypting their data and demanding they send payments in bitcoins to regain access to their computers. Bitcoin has a fuzzy history, but it is a type of currency that allows people to buy goods and services and exchange money without involving banks, credit card issuers or other third parties.
Here is a brief look at bitcoin:
How bitcoins work
Bitcoin is a digital currency that is not tied to a bank or government and allows users to spend money anonymously. The coins are created by users who “mine” them by lending computing power to verify other users’ transactions. They receive bitcoins in exchange. The coins also can be bought and sold on exchanges with US dollars and other currencies.
How much is it worth?
One bitcoin recently traded for $1,734.65, according to Coinbase, a company that helps users exchange bitcoins. That makes it more valuable than an ounce of gold, which trades at less than $1,230.
The value of bitcoins can swing sharply, though. A year ago, one was worth $457.04, which means that it is nearly quadrupled in the last 12 months. But its price doesn't always go up. A bitcoin’s value plunged by 23 percent against the dollar in just a week this past January. It fell by the same amount again in 10 days during March.
Why bitcoins are popular
Bitcoins are basically lines of computer code that are digitally signed each time they travel from one owner to the next. Transactions can be made anonymously, making the currency popular with libertarians as well as tech enthusiasts, speculators — and criminals.
Who is using bitcoin?
Some businesses have jumped on the bitcoin bandwagon amid a flurry of media coverage. Overstock.com accepts payments in bitcoin, for example.
The currency has become popular enough that more than 300,000 daily transactions have been occurring recently, according to bitcoin wallet site blockchain.info. A year ago, activity was closer to 230,000 transactions per day.
Still, its popularity is low compared with cash and cards, and many individuals and businesses will not accept bitcoins for payments.
How bitcoins are kept secure
The bitcoin network works by harnessing individuals’ greed for the collective good. A network of tech-savvy users called miners keep the system honest by pouring their computing power into a blockchain, a global running tally of every bitcoin transaction. The blockchain prevents rogues from spending the same bitcoin twice, and the miners are rewarded for their efforts by being gifted with the occasional bitcoin. As long as miners keep the blockchain secure, counterfeiting shouldn't be an issue.
How bitcoin came to be
It is a mystery. Bitcoin was launched in 2009 by a person or group of people operating under the name Satoshi Nakamoto. Bitcoin was then adopted by a small clutch of enthusiasts. Nakamoto dropped off the map as bitcoin began to attract widespread attention. But proponents say that does not matter: The currency obeys its own internal logic.
An Australian entrepreneur last year stepped forward and claimed to be the founder of bitcoin, only to say days later that he did not “have the courage” to publish proof that he is.


Squabbles erupt as G7 leaders open summit in French resort

Updated 25 August 2019

Squabbles erupt as G7 leaders open summit in French resort

  • Disputes on trade, climate may eclipse Macron’s agenda
  • EU’s Tusk warns of lack of global unity, spars with Johnson

BIARRITZ, France: Squabbles erupted among G7 nations on Saturday as their leaders gathered for an annual summit, exposing sharp differences on global trade tensions, Britain’s exit from the EU and how to respond to the fires raging in the Amazon rainforest.
French President Emmanuel Macron, the summit host, planned the three-day meeting in the Atlantic seaside resort of Biarritz as a chance to unite a group of wealthy countries that has struggled in recent years to speak with one voice.
Macron set an agenda for the group — France, Britain, Canada, Germany, Italy, Japan and the United States — that included the defense of democracy, gender equality, education and the environment. He invited Asian, African and Latin American leaders to join them for a global push on these issues.
However, in a bleak assessment of relations between once-close allies, European Council President Donald Tusk said it was getting “increasingly” hard to find common ground.
“This is another G7 summit which will be a difficult test of unity and solidarity of the free world and its leaders,” he told reporters ahead of the meeting. “This may be the last moment to restore our political community.”
US President Donald Trump had brought last year’s G7 summit to an acrimonious end, walking out early from the gathering in Canada and rejecting the final communique.
Trump arrived in France a day after responding to a new round of Chinese tariffs by announcing that Washington would impose an additional 5% duty on some $550 billion worth of Chinese imports, the latest escalation of the tit-for-tat trade war by the world’s two largest economies.
“So far so good,” Trump told reporters as he sat on a seafront terrace with Macron, saying the two leaders had a special relationship. “We’ll accomplish a lot this weekend.”
Macron listed foreign policy issues the two would address, including Libya, Syria and North Korea, and said they shared the objective of preventing Iran from obtaining nuclear weapons.
Trump later wrote on Twitter that lunch with Macron was the best meeting the pair has yet had, and that a meeting with world leaders on Saturday evening also “went very well.”
However, the initial smiles could not disguise the opposing approaches of Trump and Macron to many problems, including the knotty questions of protectionism and tax.
Before his arrival, Trump repeated a threat to tax French wines in retaliation for a new French levy on digital services, which he says unfairly targets US companies.
Two US officials said the Trump delegation was also irked that Macron had skewed the focus of the G7 meeting to “niche issues” at the expense of the global economy, which many leaders worry is slowing sharply and at risk of slipping into recession.
French riot police used water cannons and tear gas on Saturday to disperse anti-capitalism protesters in Bayonne, near Biarritz. A police helicopter circled as protesters taunted lines of police.
The leaders themselves were gathering behind tight security in a waterfront conference venue, the surrounding streets barricaded by police.

Spat over ‘Mr. No Deal’ Brexit
Macron opened the summit with a dinner at the base of a clifftop lighthouse overlooking Biarritz, where a menu of piperade, a Basque vegetable specialty, tuna and French cheeses awaited the leaders.
Adding to the unpredictable dynamic between the G7 leaders are the new realities facing Brexit-bound Britain: dwindling influence in Europe and growing dependency on the United States.
New Prime Minister Boris Johnson will want to strike a balance between not alienating Britain’s European allies and not irritating Trump and possibly jeopardizing future trade ties. Johnson and Trump will hold bilateral talks on Sunday morning.
Johnson and Tusk sparred before the summit over who would be to blame if Britain leaves the EU on Oct. 31 without a withdrawal agreement.
Tusk told reporters he was open to ideas from Johnson on how to avoid a no-deal Brexit when the two men meet.
“I still hope that PM Johnson will not like to go down in history as Mr.No Deal,” said Tusk, who as council president leads the political direction of the 28-nation European Union.
Johnson, who has said since he took office last month that he will take Britain out of the bloc on Oct. 31 regardless of whether a deal can be reached, later retorted that it would be Tusk himself who would carry the mantle if Britain could not secure a new withdrawal agreement.
“I would say to our friends in the EU if they don’t want a no-deal Brexit then we’ve got to get rid of the backstop from the treaty,” Johnson told reporters, referring to the Irish border protocol that would keep the border between Northern Ireland and EU member Ireland open after Brexit.
“If Donald Tusk doesn’t want to go down as Mr.No Deal then I hope that point will be borne in mind by him, too,” Johnson said on his flight to France.
Johnson is trying to persuade EU leaders to drop the backstop from a withdrawal agreement that was negotiated by his predecessor but rejected three times by the British Parliament as the United Kingdom struggles to fulfill a 2016 referendum vote to leave the bloc.

‘Not the way to proceed’
Despite the Brexit tensions, diplomats played down the likelihood of Trump and Johnson joining hands against the rest, citing Britain’s foreign policy alignment with Europe on issues from Iran and trade to climate change.
“There won’t be a G5+2,” one senior G7 diplomat said.
Indeed, Johnson said he would tell Trump to pull back from a trade war that is already destabilising economic growth around the world.
“This is not the way to proceed,” he said. “Apart from everything else, those who support the tariffs are at risk of incurring the blame for the downturn in the global economy, irrespective of whether or not that is true.”
Anti-summit protests have become common, and on Saturday thousands of anti-globalization activists, Basque separatists and “yellow vest” protesters marched peacefully across France’s border with Spain to demand action from the leaders.
“It’s more money for the rich and nothing for the poor,” said Alain Missana, an electrician wearing a yellow vest — symbol of anti-government protests that have rattled France for months.
EU leaders piled pressure on Friday on Brazilian President Jair Bolsonaro over fires raging in the Amazon rainforest.
Even so, Britain and Germany were at odds with Macron’s decision to pressure Brazil by blocking a trade deal between the EU and the Mercosur group of Brazil, Argentina, Uruguay and Paraguay.
A spokesman for German Chancellor Angela Merkel said not concluding the trade deal was “not the appropriate answer to what is happening in Brazil now.”
The UK’s Johnson appeared to disagree with Macron on how to respond. “There are all sorts of people who will take any excuse at all to interfere with trade and to frustrate trade deals and I don’t want to see that,” he said.