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Coinbase Extension The Coinbase Wallet extension has undergone a significant identity shift over the past year. After a brief and ultimately unsuccessful rebranding experiment as the “Base App,” Coinbase reversed course in September 2026, restoring the Coinbase Wallet name and repositioning the browser extension as a self-custody “test kitchen” for onchain trading and long-tail assets . For users who want direct access to decentralized finance without surrendering control of their private keys, the extension remains a central tool—but it is no longer just a simple wallet. It is now a multi-chain trading interface that happens to live in your browser. What the Extension Actually Does At its core, the Coinbase Wallet extension is a self-custody wallet, meaning the private keys are stored locally on your device rather than on Coinbase’s servers . The extension connects to thousands of decentralized applications across Ethereum and all EVM-compatible networks, including Avalanche, Polygon, and BNB Chain. It also supports sending and receiving Solana and SPL tokens, a notable expansion beyond the EVM-only limitations of earlier versions . For users who already hold assets on Coinbase.com, the extension offers a direct bridge: you can connect your exchange account and transfer assets into self-custody without manually copying addresses . The extension is available exclusively for Chrome, a limitation that has not changed despite years of user requests for Firefox and Safari support . Its Chrome Web Store listing carries a modest 2.7-star rating from roughly 900 reviews, suggesting that while functionality has expanded, user satisfaction with the extension experience itself remains mixed . The Multichain Expansion and Trading Focus The most consequential development in 2026 was Coinbase’s decision to abandon the “Base App” social experiment and refocus the wallet on trading and multichain access. The wallet now supports over ten public chains, including Base, Ethereum, Solana, Bitcoin, BNB Chain, Optimism, Arbitrum, Polygon, Avalanche, Robinhood Chain, and Monad . The inclusion of Robinhood Chain and Monad is particularly telling: these are newer networks that may not yet be available through Coinbase’s centralized exchange, positioning the wallet as an early-access venue for assets that regulated exchanges have not yet listed .