Bip39 Seed. The password might be written down together with the mnemonic phrase, but it would be more effective to recollect it, to make sure that a very two-component recovery process may very well be achieved: for unblocking Bitcoins, you may need “what you have got” plus “what you know”. https://digibookmarks.com/story19133373/bip39-wallet-https-linktr-ee-bip39-a-review-of-bip39-generator