Bitcoin's 10-minute block time isn't arbitrary - it's a carefully balanced design that maximizes security, minimizes orphaned blocks, and ensures network stability. This interval has remained unchanged since 2009, making it a cornerstone of Bitcoin's reliability as digital gold.
Smart contract security has evolved from audits to layered defenses. In 2026, formal verification, runtime monitoring, and MPC are mandatory for DeFi. Learn how the latest tools and regulations are reshaping blockchain safety.
Cryptographic hash functions are the backbone of blockchain security, ensuring data integrity, immutability, and trust without central authorities. Key properties like collision resistance and preimage resistance make tampering impossible.