# Quantum Resistance 1. Quantum computers are next-generation computers that have the potential to circumvent commonly used cryptography schemes used by blockchains. Bitcoin uses a technology called “elliptic curve signature scheme” to secure its system. [[IOTA (MIOTA)]] does not use the elliptic curve cryptography (ECC) but it uses hash-based signatures. This is different than [[Bitcoin (blockchain)]] because it makes its protocol resistant against by [[Quantum Computing|Quantum Computers]] but also simpler and faster for signing and verifying transactions. IOTA claims they are quantum-resistant because of “Winternitz signatures.”