Arbitrum is a layer 2 scaling solution for Ethereum, which was launched in May 2021. Here is a brief history of Arbitrum:2018: Offchain Labs, the company behind Arbitrum, is founded by Ed Felten, Steven Goldfeder, and Harry Kalodner, with the goal of creating a more scalable and efficient blockchain infrastructure.2019: Offchain Labs raises $3.7 million in seed funding to develop its blockchain scaling technology.2020: Offchain Labs releases a whitepaper outlining the design and architecture ...