Robinhood (HOOD) officially launched the public mainnet for Robinhood Chain, marking the company's biggest step yet into onchain financial infrastructure as it looks to expand beyond brokerage services and into decentralized finance. Announced during a Wednesday event in London, Robinhood Chain is a layer-2 blockchain built on Arbitrum (ARB) and designed for tokenized real-world assets and decentralized finance applications. The launch comes about four months after Robinhood began testing the network on testnet.