Ben-Sasson believes these features will need to be easy to use and low cost to gain traction. His firm StarkWare facilitated the first quantum-safe Bitcoin transaction in August. Meanwhile, Zcash's shielded activity hit a four-year high with 62,379 transactions last week, and its NU7 upgrade is set for November 5, aiming to reduce block time to 25 seconds. Zcash is up 5.76% in the last 24 hours to $15.96.