Funding streams & NU7
Every block's subsidy is split between miners (80%), Zcash Community Grants (8%) and the Coinholder-Controlled Fund (12%). NU7 cuts block time from 75 to 25 seconds and divides the per-block subsidy by three, so daily issuance stays the same. All values follow the ZIPs; dates are estimates at target block spacing.
Where each block goes
| Recipient | Per block, before NU7 | Per block, after NU7 | Per day | Per day (USD) |
|---|---|---|---|---|
| Miners (80%) | 1.25 | 0.41666668 | 1,440 ZEC | — |
| Zcash Community Grants (8%) | 0.125 | 0.04166666 | 144 ZEC | — |
| Coinholder-Controlled Fund (12%) | 0.1875 | 0.06249999 | 216 ZEC | — |
| Total subsidy | 1.5625 | 0.52083333 | 1,800 ZEC | — |
Blocks every 75 s (1,152 per day). Transaction fees go to miners, except that from NU7 60% of fees are removed from circulation (ZIP 235). Per-block values use ZIP 218's rounding, so three post-NU7 blocks pay a few zatoshi less than one pre-NU7 block.
What changes when
- …height 3,543,405NU7
25-second blocks; subsidy per block ÷ 3; 60% of fees removed from circulation; Sprout funds become unspendable; ZCG and Coinholder streams extended to the new third-halving height.
- …height 6,132,390Third halving
Subsidy halves. The 8% ZCG and 12% Coinholder streams end (ZIP 1016 / ZIP 214 rev. 3) unless a later upgrade changes them.
- …height 8,939,664NSM reissuance starts
The Network Sustainability Mechanism begins paying ZEC removed from circulation back out through block rewards (ZIP 237).
Scenario: ZCG treasury runway
A forum proposal (Oct 26, 2026) would end the 8% ZCG stream at NU8 and send it to the NSM instead; press coverage attributes a related draft to Sean Bowe. This compares how long ZCG's treasury lasts if the stream runs to the third halving versus stopping on a date you choose. It is a simple model: constant ZEC price and spending, no new policy. Change any input.
Default: OpenZcash, Oct 2026
Default: Q1 2026 ZCG expenses (FPF)
Live price
NU8 has no scheduled date
Not modelled: price changes, investment returns, approved-but-unpaid milestones, and the proposal's transfer of the remaining treasury to the NSM. The Coinholder fund (12%) is unaffected by the proposal.