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I use paper wallets only to ensure security. I store hard copies of the private keys in several secure locations so I won’t lose them. I don’t trust online wallets, my computer hard drive, or exchanges.

I also avoid keeping that information on disks or thumb drives because data can get erased or corrupted. The best place to keep the private keys is in a safe deposit box and in a safe or fire safe. Don’t let anyone have access to it.