An ETH wallet is just a private/publik keypair. You only have to generate a compatible pair [1] and write it in a piece if paper. What makes it "cold" is that

An ETH wallet is just a private/publik keypair. You only have to generate a compatible pair [1] and write it in a piece if paper. What makes it "cold" is that you dont place your keys sonwhere online (myetherwallet, exodus,etc) so it cant be hacked. [1] https://www.arthurkoziel.com/generating-ethereum-addresses-in-python/ https://www.arthurkoziel.com/generating-ethereum-addresses-i...