OTPClient VS metal-bitcoin-storage-reviews

My problem is that Aegis (open source) does not have a Linux app so I have to use an alternative. I found OTPClient, and it seems to fit the bill for a privacy concerns, but I can't figure out how to add it in PayPal as a second device to authenticate with.

If so, check out OTPClient.

Otpclient keep password manager and totp separate .

You can export your secret keys from Aegis, then import them into OTPClient if you want to use it on Desktop. That's the benefit of Aegis being FOSS. Your are not locked in to only using their products.

You didn't share your OS, but on Linux you could use Authenticator or OTPClient. If you want something cross-platform that will sync to multiple devices like Authy, you could give TokenVault in Standard Notes a try.

Expanding on the recommendations here, if you have some old laptop laying around (or can buy one on the cheap off e.g. Craigslist or something), you could install some Linux distro on it, install an OTP generator app (e.g. OTPClient, and then disconnect it from the network entirely. This would probably be considerably more secure than even using a phone, since the only way for someone to steal your TOTP keys would be to have physical access to the machine (and even that can be mitigated, seeing as how any reasonably-modern Linux distro will support full-disk encryption).

OTPClient is what I use. The source code is on github here

You can use otpclient https://github.com/paolostivanin/OTPClient

You can use this guide to see what's best, but I just bought some stainless steel plates and engrave them myself. https://jlopp.github.io/metal-bitcoin-storage-reviews/

Okay, so now, how about the availability of the information. Is your seed phrase on your device of choice acceptably available to you? How about if your house was broken into? How about if your house burned down? Consider all the things that could harm the availability of your seed phrase to you, without sacrificing the confidentiality of that information. A steel plate that can survive a house fire https://jlopp.github.io/metal-bitcoin-storage-reviews/ can increase your availability, but does it sacrifice confidentiality? How about if its kept in a safe? How about, geodispursed mutli-sig with steel plates that are also geographically dispersed? Its a good trade off between availability and confidentiality and you can read more about it here: https://glacierprotocol.org/docs/overview/multi-signature-security/

If you want true cold storage then best option would be generate a wallet offline. Make note of the seed phrase. Check this seed phrase is correct and can recover the wallet! Then backup seed on steel hardware like a cryptosteel or other method of your choice from this list. https://jlopp.github.io/metal-bitcoin-storage-reviews/

https://jlopp.github.io/metal-bitcoin-storage-reviews/ Have a look here.