How do I back these up in case of catastrophic data loss, such as my house and all my possessions burning down (there are approximately 350000 house fires a yea

How do I back these up in case of catastrophic data loss, such as my house and all my possessions burning down (there are approximately 350000 house fires a year in the USA, so it's worth worrying about when its your entire digital life)? I take my security safety, but I take the durability of my digital life much more seriously. Right now, I am able to back up all my personal passwords and all my personal TOTP secrets into printed paper form that I keep in tamper-evident packaging and distribute to a safe-deposit box and the basements/attics of different trusted friends/family members. The printed packet of paper has instructions on how to use it, the passwords and TOTP secrets themselves, and the brief source code for one program, one that lets you generate TOTP codes from all my secrets (TOTP is very simple, it's like 30 lines of python[0]). I've tested it all and it is sufficient to access any account I have. Since it's all recorded on paper, each packet will function for my entire lifetime; I don't have to worry about storing a device and that device's charging/power equipment, and I don't have to worry about that device's capacitors or battery going bad in 10 years. So in the world of "passkeys", how do I simply and durably record them so that if need be, someone who is not me, who I've never met, and who has access to none of my electronic devices, can authenticate as me given that this person is willing to put several days effort into dealing with my authentication archive (e.g. an estate lawyer)? I know that this is "possible"; it's all based on data and secrets recorded somewhere, but I'm having a hard time understanding the FIDO description, and I don't see an Open-Source equivalent of what Google's offering here. Is there a "KeePassX" of the passkey world? [0] - https://github.com/susam/mintotp/blob/main/mintotp.py https://github.com/susam/mintotp/blob/main/mintotp.py