Robinhood Chain went live on 1 July 2026, and the mainnet launch came with a 90-day gas rebate for transactions sent from the Robinhood Wallet (Arbitrum documented the launch itself). That window closes at the end of September; crypto.news puts the date at 29 September. After it, every transaction on the chain pays a network fee in ETH again. For the memecoins that set the tone on this chain, it is the first real stress test.