In a blockchain, ownership of an asset is proven through a private key. However, you will not be transacting on only one blockchain network. There are already numerous blockchains in the market besides Bitcoin and Ethereum, and there are also networks that are layer 2 solutions. Each blockchain uses a different private key and address. You can also use multiple keys and addresses on the same blockchain network. How can I conveniently manage when there are so many private keys in my wallet?