You’re describing a chilly storage Account-Pockets, secured by a BIP39 Seed Restoration Phrase, (aka mnemonic phrase + passphrase) to permit regeneration of the seed.
That MAY be all it is advisable to get well your belongings in chilly storage belongings, utilizing any BIP39 and so on suitable Pockets-Shopper.
In fact, your Seed and mnemonic phrase (+passphrase) should be generated in response to the BIP39 normal. This isn’t to be assumed with Electrum, whose creator hates BIP39 with a ardour and has adopted different nonstandard methods for seed / mnemonics.
I recommend an amnesiac and airgapped Linux Stay boot PC utilizing the iancoleman device and cube rolls myself.
Or a {Hardware} pockets, which may then later be reset to service your sizzling account wallets.
Clearly your SRP is the “key to the dominion” – do not depend on reminiscence, nor select any phrases your self! Use a real random (excessive entropy supply) methodology to generate all of them. See EFF DiceWare notes to make sure a sturdy passphrase or maybe simply generate one other 12-word mnemonic for that.
I like to recommend then etching to a number of stainless plates distributed to a number of safe areas, mnemonics separate from passphrase.
As to derivation path, in case you
keep on with BTC solely, and
settle for the usual path(s)
and the default Zero Account#, and
use the addresses auto generated, with out skipping previous say 20 of the unused (google hole limits)
Then any fashionable BIP39 suitable wallet-client ought to discover all of your belongings as a part of the account pockets (seed) restoration course of, even many many years in future.
