Craig Wright currently wages a legal battle with the property of his former business partner, David Kleiman, for 1.1 million bitcoins.
Wright, who claims to be Satoshi Nakamoto, the inventor of Bitcoin, published an update on the status of private keys and his ability to access bitcoins, satisfying a court decision that forces him to hand over half to Kleiman's estate.
In early January, US judge Beth Bloom gave Wright a February 3 deadline to comply. Wright responded in the affirmative, claiming that a customs mail that holds the keys to unlocking encrypted Bitcoin would arrive this month.
Until the appearance of that mail, Wright said that bitcoins would remain inaccessible.
The bitcoins in this court case were mined in the early days. If accessed by Wright, they could prove his claim that he is Satoshi Nakamoto. But as the case unfolds, Wright has been accused of falsifying documents and lying.