> The tarsnap.key would not be a *short* mnemonic phrase Ah I didn't think of that. It looks like Bitcoin's BIP39 requires 12 words to store a 128-bit key, so 192 words for Tarsnap's key would make it a bit pointless.
> IMO, it is easier to (securely) backup the actual tarsnap.key file. > Use multiple media types per best practice for any important backup. I'll stick to doing this. Thanks again for the advice, Matthew.
