The administrator of a trade for the virtual coin Bitcoin has confessed to maintaining an unlicensed cash transmitting business.
Charlie Shrem from BitInstant.com conceded the charges in a New York government court hearing.
Another Bitcoin broker, Robert Faiella, additionally conceded.
Both were captured in January, blamed for offering more than $1m (£603,000) in bitcoins to clients of online medication commercial center the Silk Road.
The site was closed down a year ago and its asserted proprietor was captured.
The two dealers conceded the charges as a component of an arrangement hit with US prosecutors so as to settle the assertions against them.
Bitcoin trades are administrations that permit clients to exchange bitcoins for conventional monetary standards.
Mr Shrem had been blamed for permitting Mr Faiella to utilize BitInstant to buy extensive amounts of bitcoins to offer on to Silk Road clients who needed to purchase medicates namelessly.
The powers said Mr Shrem was mindful that the bitcoins were being utilized for such buys, and along these lines he was infringing upon the Bank Secrecy Act.
The Act requires money related establishments in the US to ready powers to any suspicious movement that may propose government evasion is occurring