Zcash marks its 10th anniversary on Oct. 28 with a fundamental shift in how it funds protocol development. The network has long stood apart from Bitcoin by directing 20 percent of block rewards to development and ecosystem work—a rare embedded funding model that has sustained continuous upgrades across market cycles.
Miners currently receive 80 percent of ZEC block rewards. The remaining 20 percent splits between Zcash Community Grants at 8 percent and a Coinholder-Controlled funding mechanism at 12 percent.
Zcash co-founder Sean Bowe has submitted a draft Zcash Improvement Proposal to restructure this allocation. The proposal ends the 8 percent block subsidy to ZCG and redirects it into a new Network Sustainability Mechanism. Under the NSM, these ZEC would be withheld from circulation rather than released to the market. Bowe argues ZCG already holds sufficient reserves to fund grants independently, and the proposal preserves the 12 percent coinholder allocation, the miners' reward share, and ZEC's maximum supply cap.
The reallocation signals where Zcash sees its next challenge: quantum computing. The network's privacy architecture has evolved through three major shielded pool upgrades—Sprout, Sapling in 2018, and Orchard in 2022—each redesigning how transactions hide sender, receiver, and amount. In 2026, the Ironwood upgrade introduced quantum-recoverable addresses and formal verification to mathematically prove the protocol's security properties.
But quantum-resistant infrastructure requires sustained, focused development. By ringfencing resources through the NSM, Zcash is betting that the privacy coins which survive the next decade will be those that fortified themselves against post-quantum threats before they became urgent. The shift reflects a hard choice: optimizing near-term funding efficiency for long-term protocol resilience.
