What is V1 or V2?

Could you please clarify what you mean by "V1" or "V2" in the context of cryptocurrency and finance? Are you referring to specific versions of a cryptocurrency protocol, software, or hardware wallet? Or perhaps you're asking about different iterations of a trading strategy or algorithmic approach? Without more context, it's difficult to give a precise answer, but it would be helpful to know what specific aspect of the cryptocurrency and finance industry you're inquiring about.