IonQ CEO Niccolo de Masi says Q-Day arrives in 2028, threatening Bitcoin's secp256k1 encryption. Here's what the timeline means for crypto

IonQ estimates a 20,000-qubit fault-tolerant quantum computer could solve Bitcoin’s secp256k1 elliptic-curve problem in about 26 days.

The company has built its first chips and begun testing prototypes as it seeks to manufacture quantum computers in larger quantities.