The NU7 testnet activated on October 4 at 18:21 UTC, at block height 4,465,026—earlier than the originally planned date of October 6. The target for mainnet activation remains November 5. A final decision will be made on October 20, based on how the testnet is performing.
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📋 NU7’s Three Core Changes
① Block time has been reduced from 75 seconds to 25 seconds. This is the most immediately noticeable improvement. The time Zcash users wait for their first confirmation will drop from an average of 75 seconds to 25 seconds—a substantial usability improvement for payments, exchange deposits, and cross-chain bridges. Daily ZEC issuance will remain unchanged: the halving interval will be extended threefold, while the reward per block will be divided by three.
② Introduces a Network Sustainability Mechanism (NSM). Sixty percent of transaction fees from each block is taken out of circulation and deposited into a reserve, while miners retain 40% to ensure they still have an incentive to process transactions. A small portion is then reissued from the reserve in each subsequent block, on top of the regular block reward. The halving schedule and 21 million coin cap remain unchanged, and the public reserve is initially seeded with the historical shortfall from before NU6. The supply previously removed will begin to be reintroduced in February 2031.
③ Shielded capacity doubles, and the old Sprout pool is deactivated. NU7 increases the per-block limits on shielded transactions: 330 Orchard or Ironwood actions, 300 Sapling inputs and outputs, and a shared cross-pool budget of 330. It will also stop accepting new Sprout JoinSplits. This more than doubles Orchard protocol throughput while reducing the worst-case sync load from spam transactions on light wallets by about 37%. Deactivating version 4 transactions means that ZEC held in the legacy Sprout shielded pool will become unspendable if users do not move their funds before NU7 is fully activated.
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A macro-level takeaway for positioning strategies
Testnet activation alone is not a price catalyst; it is a “progress confirmed” signal. The market’s reaction has been muted: ZEC is currently trading at around $1,308, down 15–20% this week, with net ETF outflows of $93.6 million this week. The price has fallen about 23% from its September 27 high of $1,697. One noteworthy detail is that futures trading volume is about 15 times spot volume, suggesting that prices are following leveraged positioning more than the upgrade itself.
The real decision point is October 20. If the developers confirm the mainnet activation height on that day and lock in November 5 as the target, it would indicate that the testnet is running smoothly and reinforce the narrative with a “date confirmed” signal. If there is a delay or a serious testnet vulnerability, the market will lack any positive catalyst to absorb selling pressure, against a backdrop of ongoing ETF outflows.
Whale behavior is diverging. On-chain data shows that one large address accumulated 27,160 ZEC (about $37.5 million) during the pullback. Whales now hold approximately 65,158 ZEC in total, worth over $91 million, with an average entry price of about $1,510—leaving them at an unrealized loss of around 7% at current prices. Meanwhile, institutional funds continue to redeem from ETFs. Retail investors are selling through ETFs, while whales are buying the dip on-chain—the two forces are moving in completely opposite directions.
$1,233 remains a key dividing line for the medium-term trend. The current price is hovering above key support in the $1,280–$1,330 range, with $1,400–$1,450 as the first major recovery target. Before October 20, the NU7 testnet’s technical progress is worth watching, but testnet activation alone is not a reason to add to positions—it confirms development progress, not a change in the direction of capital flows.
Lower volatility is the result of holiday-related liquidity contraction combined with a natural market correction, not a signal of a trend reversal. ZEC is currently testing the lower edge of a high-level consolidation range. $1,270–$1,300 is the key zone bulls need to defend, while $1,233 is the make-or-break level for the medium-term trend. Until ETF outflows stabilize or the NU7 mainnet activation date is confirmed, the market will likely remain in a low-volatility range between $1,270 and $1,420, awaiting a new directional catalyst.