Self-styled Bitcoin creator Craig Wright appeared in court on Monday to face well-funded prosecutors seeking to prove that the computer scientist is not, in fact, Satoshi Nakamoto.

The legal battle is widely expected to bring an end to recurring lawsuits launched by Wright against the crypto community, which has largely met his proclamations with skepticism and derision.

The ‘Beginning of the End’ for Craig Wright

The first day of trial features skeleton arguments from both prosecutors and Wright, before the scientist’s lawyers present his full case on Tuesday.

His opposition is the Crypto Open Patent Alliance (COPA), a group backed by both Meta (formerly Facebook) and Block, the payments firm spearheaded by Bitcoin enthusiast Jack Dorsey.

“CWS’s conduct is deadly serious,” argued COPA in a London High Court, before Justice Justice Edward James Mellor. “He has terrorized bloggers who dispute his claim.”