Crypto exchange Coinbase’s layer-2 solution Base had about 4 million active addresses last week as it continues to push its “Onchain Summer” campaign forward. Jesse Pollak, the head of Base, shared data from Dune Analytics, saying that the layer-2 network reached an all-time high in weekly active addresses. Pollak highlighted that over 4 million active addresses were on the blockchain last week. The new development comes as Base continues its “Onchain Summer” campaign that incentivizes building on the base network. Base rewards builders through a summer campaignIn 2023, Base launched an “Oncha…