At only 18, he has allegedly stolen more than $100 million as the mastermind of a cryptocurrency hacking scheme.
Halving occurs every four years and reduces the amount of bitcoin mined in each transaction by 50 percent.
The 11 lawsuits, filed on Friday in U.S. District Court in Manhattan, also name executives of the companies.
Bitcoin is a cryptocurrency, or a type of digital currency.
The action-movie star Steven Seagal gets slapped by the SEC.
Digital transactions are faster and globally accessible.
Nearly 25 million people around the world use bitcoin.
"We will work to build a payment network that makes money easier to access," the company said.
The U.S. government on Tuesday is auctioning more than 4,000 bitcoins --- worth nearly $39 million --- that were recovered from criminal cases.
The agency issued updated guidance after initially including "Fortnite’s" V-bucks as an example of a convertible virtual currency.
One Bitcoin is worth nearly $10,000 as of Feb. 8.
Each cryptocurrency transaction is a unique exchange between two parties.
Billionaire investor Tim Draper said bitcoin is the key for millennials who want to ensure they have enough money in retirement
The largest cryptocurrency by market capitalization, with a total value of $162 billion, bitcoin has gained 23 percent so far this year
Paypal co-founder Max Levchin said the United States runs the risk of losing the digital currency battle if it doesn't fully digitize the dollar.
Matthew Goettsche, 37, was arrested Tuesday in Colorado, while Jobadiah Weeks, 38, was taken into custody in Florida and Joseph Abel, 49, was arrested in California, according to the U.S. attorney's office.
Suspect told North Koreans they could use cryptocurrency to 'achieve independence from the global banking system,' according to a criminal complaint.
We may all be paying indirectly for private bitcoin mining operations.
Trust is crucial in financial services, but it is something Facebook Mark Zuckerberg lacks, Ripple CEO Brad Garlinghouse says.
The social network's founder estimated that six out of the top 10 companies coming out of China don't share "American values."