Blockchain wallet development focuses on creating secure digital wallets for storing, sending, and receiving cryptocurrencies. Wallets can be custodial or non-custodial, supporting hot or cold storage. Developers build features like multi-currency support, private key management, QR code scanning, and integration with dApps. Wallets may be browser-based, mobile, or hardware-enabled. Security is paramount, with implementations of encryption, biometrics, and backup recovery. Custom wallet development ensures businesses offer seamless, branded user experiences for crypto transactions, NFT storage, and Web3 interactions.