A Dark Web drug dealer caught in an international sting will learn his punishment.
Cei William Owens, was arrested with six other Britons last year by the National Crime Agency (NCA), as part of a clampdown on illegal website Silk Road 2.0 - the shady web platform allowing users to sell drugs and guns online.
The 29-year-old pleaded guilty at a court hearing in June and was warned he could face a prison sentence when he turns up to Swansea Crown Court this morning.
He has been charged with supplying or offering to supply class A and B drugs - magic mushrooms and cannabis - as well as three counts of possession.
Welshman Owens, formerly of Aberdovey but recently living in Aberystwyth, will also be subject to a Proceeds of Crime probe – which will give the court power to seize any money or assets from his dodgy dealings.
Online black market Silk Road was launched in 2011 and led to more than 200 million dollars (£128 million) of anonymous online drug sales.
Earlier this year, its creator, Ross Ulbricht, 31, was sentenced to life by a US judge for a series of charges including distributing drugs through the internet, conspiring to commit computer hacking and money laundering.
After the FBI took down the site, a second - called Silk Road 2.0 - was launched. That platform was also shut down by authorities in the US.
Following a series of raids in the UK last year, NCA bosses said criminals were mistaken if they thought the Dark Web provided a “safe and anonymous” way for them to peddle drugs.
Deputy director Roy McComb said: “It may take time and effort to investigate and build a criminal case, but we are determined to identify and prosecute people caught dealing drugs and committing serious crime using the dark web.”