Z/Yen is the City of London's leading commercial think-do tank promoting societal advance through better finance and technology. Z/Yen helps organisations make better decisions about enhancing reward, controlling risk and increasing certainty. Z/Yen's clients are in many sectors, most often where technology and finance try to achieve a social purpose. Z/Yen works with clients to discover, solve, and act on opportunities by managing programmes and projects, building systems, and creating collaborative communities. Z/Yen implemented its first mutual distributed ledgers (aka blockchains) in 1995.

The Long Finance Initiative was established in 2007 by Z/Yen Group in conjunction with Gresham College to improve society’s understanding and use of finance over the long-term. Long Finance seeks to address the underlying question “when would we know our financial system is working?” through community building and a wide-ranging research agenda. Substantial research has been conducted on mutual distributed ledgers (aka blockchain technology), covering topics from system design to commercial applications.