Zcash Co-Founder Questions Bitcoin's 21 Million Supply Cap, Proposes New Issuance Model

Zcash co-founder Eli Ben-Sasson has questioned the long-term sustainability of Bitcoin’s fixed 21-million-coin supply cap, arguing that the continued loss of private keys will steadily reduce the cryptocurrency’s circulating supply.

In comments shared on X, Ben-Sasson said he still supports a monetary policy with an absolute cap but believes the issuance model should be adjusted. He suggested allowing a fixed maximum annual issuance rate—such as 4%—to offset the gradual loss of coins, helping preserve liquidity while keeping the circulating supply aligned with long-term population growth.

Source: Eli Ben-Sasson