Blockchain wallet development involves creating secure digital wallets that allow users to store, send, and receive cryptocurrencies and tokens. These wallets can be custodial or non-custodial and support features like multi-signature security, biometric authentication, and integration with dApps. Developers build mobile, desktop, and web-based wallets that support multiple blockchains such as Ethereum, Bitcoin, and Solana. Custom wallet development includes token swaps, staking, and DeFi integration. These wallets are essential for user interaction within the Web3 ecosystem, enabling seamless access to decentralized finance and digital assets.