Facebook’s fledgling cryptocurrency faced mounting scrutiny on Tuesday as European central bankers and regulators demanded more detail on the social media giant’s Libra project.

Axar.az reports citing Reuters.

Britain’s top financial regulator said there was not yet enough information to understand Libra, adding that it could be very significant for public policy and that would not easily get the go-ahead without further disclosure.

Facebook last week announced plans to launch Libra within the first half of 2020, part of an effort to expand beyond social media to e-commerce and digital payments.

“They are not going to walk through authorization without that,” Andrew Bailey, chief executive of the Financial Conduct Authority, told a British parliamentary committee.

Cryptocurrencies such as bitcoin remain one of the least-regulated areas of finance, and the response of domestic and international financial regulators and monetary authorities to the Libra project will have a crucial impact on its prospects.

S&P Global Ratings said regulatory hurdles were the main hurdle to Libra’s success, and risked delays to its launch. The coin would likely be subject to differing regulatory approaches, as is the case with existing cryptocurrencies, it said.

“This level of scrutiny could imply either delays or limited scope in the initial roll-out,” S&P said in a report.

Facebook’s project has raised privacy concerns among U.S. lawmakers and prompted European central bankers to claim oversight to ensure it would not jeopardize the financial system or be used to launder money.

Until now, global central bankers have largely refrained from regulating digital currencies, concluding last year they were too small to pose a risk to the financial system.

Although Facebook’s plan to expand into payments is not expected to be on the agenda of this week’s G20 summit in Japan, the Financial Stability Board (FSB), which coordinates financial rules for G20 countries, said it could lead regulators to take a closer look at digital assets.