When Chris, a mechanical engineer specializing in aerospace and material sciences, lost his birth certificate in a devastating flood in Germany, he learned firsthand the fragility of paper documents.

Years later this experience would help shape his approach to one of Bitcoin’s most critical challenges: securing private keys.

“It was really a pain to get my birth certificate back,” Chris recalls. “I had to go to the office with my mom as a witness because she had to prove that I came out of her. Without it, they would not have supplied me with a new birth certificate.”

Pain is often the best teacher. Many people don’t think about how to properly secure crucial…

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