Arbitrum logo on a blue backgroundArbitrum is a layer-2 solution for the Ethereum blockchain – Photo: Shutterstock After launching its mainnet last year, Arbitrum has seen success as an Ethereum (ETH) layer-2 solution. Arbitrum has focused on providing investors with a cheap, fast and scalable network, elements that Ethereum is still struggling with despite its Merge upgrade in September 2022. As a result, developers have flocked to Arbitrum to build decentralised applications (dApps), and it...