The 5 Most Common Bitcoin Self-Custody Mistakes. Why most Bitcoin losses come from misunderstanding wallets, keys, and recovery - not hacks. Enter your email to receive the free guide. You’ll also receive a short series of emails explaining these mistakes and how to avoid them, from good backups to recovery testing. Email Address Get the free guide. I just sent your copy of The Top 5 Bitcoin Mistakes That Put Your Coins at Risk.Check your inbox for "Your Bitcoin security guide is ready"Don't see it? Check your spam or promotions folder, or search for cole@thebitcoincourse.com