Robinhood Chain is evaluating a transaction-ordering system that would let users pay a fee to prioritize trades, after Arbitrum revamped its paid-for ordering technology. According to CoinDesk, the chain currently uses first-come, first-served ordering and has not used Arbitrum’s original Time Boost, while the newer Priority Gas Auctions model is now under review. Robinhood Chain launched in July and has since entered the top 10 blockchains by total locked value.