It's amazing to leave BIP39 hell and just trust WIF on 💿💿💿💿💿💿💿
"we back up in Bitcoin Core's WIF and wallet descriptor formats so recovery does not depend on a mnemonic standard Core does not implement. We use archival grade optical discs and refresh them every 7-10 years so the copy itself does not rot. We use the CD/DVD form factor because it is a long-stable spec and is readable with cheap, generic drives. This means recovery does not depend on Bitcoin-specific hardware devices."
