Quantum computing won’t break Bitcoin in 2026, but attackers are already preparing. Here’s how crypto is moving toward post-quantum security, and how ready it is.

From Ethereum experiments to Big Tech rollouts, decentralized identity in 2025 highlighted how selective disclosure and privacy-first verification are gaining ground.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Gordon Scott has been an active investor and ...