Dotcom's lawyer, Paul Davison, argued that the disclosure of evidence is key to putting up an effective defence. The key to which will be disproving that Dotcom willfully broke copyright laws by showing email correspondence between Dotcom, Megaupload, and Megaupload users.

Davison says his client is being unduly hindered.

"The principles of human justice is to be able to defend oneself without having your hands tied behind your back," he says.

An emphatic Davison told the court that the US was looking to bend New Zealand laws to achieve its goals.

Davison says the extradition treaty between the two countries guarantees that New Zealand laws are applied when extradition is sought by the US.