It's not required to know all the details of BIP39 so that you can use copyright - however you would certainly get pleasure from recognizing a little about this. This informative article describes BIP39, the standard that defines how seed phrases are created, and summarizes how BIP32 and BIP44 standards https://royalbookmarking.com/story18978011/bip39-seed-phrase-mnemonics-generator-an-overview