What is another name for ref?

Excuse me, could you please clarify what you mean by "ref" in this context? Is it referring to a specific term or concept in the world of cryptocurrency or finance? If so, I'm curious to know if there's another commonly used name or term that people might use interchangeably with "ref". Could you provide some insight into this, perhaps with an example or two to help illustrate your point? I'm eager to learn more about this terminology and how it's used in our industry.