Is Uniswap v2 on base?

Excuse me, could you please clarify what you mean by "Is Uniswap v2 on base?" Are you asking if Uniswap version 2 is operational and functioning properly on its underlying blockchain platform? Or perhaps you're wondering if Uniswap v2 has achieved a certain level of stability or adoption within the cryptocurrency ecosystem? It would be helpful if you could elaborate on your question to provide a more specific context or area of inquiry.