Coinbase will stop supporting DAI deposits and withdrawals through Arbitrum, Optimism and Avalanche from Aug. 17, 2026, while continuing DAI transfers on Ethereum mainnet. The exchange will also end USDC deposits and withdrawals on the Noble network on Aug. 17, though USDC transfers on Ethereum, Base, Solana, Arbitrum, Optimism and Polygon will continue. Coinbase said users should not send funds to Noble USDC deposit addresses after the cutoff because those assets may not be recoverable. The changes are operational network support reductions rather than trading delistings or broader removals of DAI or USDC from Coinbase.