Arbitrum One, the beta mainnet deployment of layer-two scaling solution Arbitrum, has been launched successfully by Chainlink. Developers building on the platform would be able to access financial market data directly on-chain after the launch. Many of the most popular DeFi protocols have said that they plan to incorporate Chainlink's data oracles in their Arbitrum installations. The programme has already piqued the interest of Aave, MCDEX, and Tracer DAO.