What is core 4 in business?

Excuse me, could you please clarify what you mean by "core 4 in business"? Is it referring to a specific framework, set of principles, or a common terminology used in the industry? If it's a widely recognized concept, could you elaborate on its key components and how it's typically applied in various business contexts? I'm particularly interested in understanding how it relates to the field of cryptocurrency and finance, if there's any connection.