Embattled cryptocurrency exchange FTX has filed for bankruptcy in the US, seeking court protection as it looks for a way to return money to users.

Bitmain, China's biggest maker of cryptocurrency mining machines, said it had suspended sales of its products in the spot market to help ease selling pressure following Beijing's ban on bitcoin mining.

China has expanded its clampdown on cryptocurrencies, telling banks and payments platforms to stop supporting digital currency transactions.

The popularity of cryptocurrencies such as Bitcoin has resulted in shortages of graphics cards as miners buy them in bulk. Now a new cryptocurrency is set to create another component shortage, only this time it's hard drives and SSDs that will be hard to find.

Goldman Sachs has restarted its cryptocurrency trading desk and will begin dealing bitcoin futures and non-deliverable forwards for clients from next week, a person familiar with the matter said.

Yellen argues many cryptocurrencies are used "mainly for illicit financing."

Tim Cook has weighed in against launching an Apple cryptocurrency, saying that companies should not be trying to gain power by establishing competing currencies.

Visa, Mastercard and other key financial partners may reconsider their involvement in Facebook's cryptocurrency, Libra, the Wall Street Journal reported on Tuesday, citing people familiar with the matter.

Facebook announced big plans to revolutionize payments in Europe with the launch of a virtual currency. But EU finance ministers see libra as a risk to monetary stability.

China's central bank will launch a state-backed cryptocurrency and issue it to seven institutions in the coming months, according to a former employee of one of the institutions who is now an independent researcher.

ZenGo's wallet will support Libra, a cryptocurrency Facebook plans to launch in 2020.

Waters' request came hours after Facebook unveiled Libra.

Facebook is a key part of the Libra Association, the nonprofit organization behind the Libra cryptocurrency.

Facebook is expected to release a white paper on GlobalCoin, its forthcoming cryptocurrency, on Tuesday.

Cadence Design Systems has announced the tapeout of a complete GDDR6 memory IP solution on Samsung's 7LPP process. GDDR6 memory is targeted at very high-bandwidth applications including machine learning, AI, cryptocurrency mining, graphics, automated driving, ADAS and high-performance computing (HPC).

BlackRock Chief Executive Larry Fink on Monday said the world's largest asset manager has assembled a working group to look at blockchain technology and cryptocurrencies such as bitcoin, but cautioned he does not see massive investor demand.

Chinese e-commerce giants such as JD and Alibaba are currently trialing blockchain to perfect their huge supply chains. The AI blockchain combo also has a bright future in market analysis and forecasting.

This follows news that the social network created a blockchain division.

Google will ban online advertisements promoting cryptocurrencies and initial coin offerings starting in June, part of a broader crackdown on the marketing of a new breed of high-risk financial products.

Ledger will integrate its Blockchain Open Ledger Operating System (Bolos) into Intel Software Guard Extensions, with the joint solution initially being deployed with cryptocurrency software wallets Electrum and MyEtherWallet.

During California's Gold Rush, it was often the sellers of pickaxes and shovels who made the most money. In the frenzy to get rich quick from cryptocurrencies, some investors are calling computer chipmakers the modern-day equivalent.

The effects of the most recent cryptocurrency mining phase are having a direct impact on various markets, most notably on the GPU product lines from Nvidia and AMD.