A leading practitioner in Cryptocurrency and Digital Technology, Jansen successfully obtained Singapore's first reported case of a worldwide mareva injunction against "Persons Unknown" and third party disclosure orders against cryptocurrency exchanges in CLM v CLN. Additionally, he acted for a group of Russian cryptocurrency algorithmic traders in a US$100 million dispute relating to trade revenue and proprietary software, as well as advised liquidators of a cryptocurrency investment platform involving misappropriation of over $300 million of cryptocurrency assets.