Bip49, or Bitcoin Improvement Proposal 49, is a standard that outlines the derivation paths and addresses used in hierarchical deterministic wallets for cryptocurrencies that are derived from the Bitcoin codebase. Bip49 was proposed as a way to enhance the interoperability and compatibility of different wallets and improve the user experience for managing multiple cryptocurrencies.

Under Bip49, hierarchical deterministic wallets use a specific derivation path to generate addresses for Bitcoin and other cryptocurrencies that are based on the same codebase, such as Litecoin and Dogecoin. This allows users to manage their different cryptocurrencies using a single seed phrase or private key, simplifying the process of storing and accessing funds across multiple wallets.

By following the guidelines set out in Bip49, developers can ensure that their wallets are compatible with others that also adhere to the standard. This helps to create a more seamless and user-friendly experience for individuals who hold and transact in multiple cryptocurrencies within the same wallet interface, improving overall usability and accessibility in the digital asset space.