[REVISION HISTORY]
Zcash implements NU7 upgrade and decommissions Sprout
12 recorded revisions of this situation.
What changed
2026-11-06 06:59 UTC → 2026-11-07 01:17 UTC ·
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removed
The Zcash network has successfully activated the NU7 upgrade, upgrade at block 3,543,405, a technical transition designed to accelerate transaction speeds. By reducing the target block interval from 75 seconds to 25 seconds, the upgrade aims to decrease confirmation wait times at exchanges, points of sale, and cross-chain bridges. For example, exchange deposit processing times could potentially drop from nearly four minutes to approximately 75 seconds. The upgrade implements a Network Sustainability Mechanism (NSM) (NSM), developed by Shielded Labs, to maintain the total supply cap of 21 million coins. While block production is faster, individual block rewards are lowered to ensure daily issuance remains constant. Furthermore, 60 percent of transaction fees are now removed from circulation to fund a reserve intended to support future block rewards starting around February 2031. A significant consequence of the activation is the decommissioning of the original Sprout privacy protocol. As a result, The invalidation of version 4 transactions has effectively frozen approximately 12,224 ZEC remaining in ZEC, valued at roughly $15 million to $16 million, within the legacy Sprout system have become unspendable. shielded pool. While these coins are not destroyed, they cannot be moved or spent until a potential recovery mechanism, are currently unspendable under discussion by the new consensus rules. Zcash co-founder Sean Bowe, is approved Bowe previously characterized the Sprout pool as “technical debt and implemented. a security risk,” though the possibility of future access via subsequent upgrades remains a topic of discussion. This technical milestone follows a period of significant market growth in late 2026, where ZEC prices reached highs near $1,526 following the launch of Grayscale’s Zcash spot ETF (ZCSH) and the closure of a U.S. SEC investigation into the Zcash Foundation.
Versions
- 2026-11-07 01:17 UTC Zcash implements NU7 upgrade and decommissions Sprout
- 2026-11-06 06:59 UTC Zcash implements NU7 upgrade and decommissions Sprout
- 2026-11-04 18:23 UTC Zcash NU7 upgrade and market expansion
- 2026-11-04 00:01 UTC Zcash NU7 upgrade and market expansion
- 2026-10-26 11:31 UTC Zcash NU7 upgrade and market expansion
- 2026-10-19 01:21 UTC Zcash NU7 upgrade and market expansion
- 2026-10-06 13:55 UTC Zcash NU7 upgrade and market expansion
- 2026-10-05 04:37 UTC Zcash NU7 upgrade and market expansion
- 2026-09-21 06:43 UTC Zcash NU7 upgrade and market expansion
- 2026-09-19 22:22 UTC Zcash NU7 upgrade and market expansion
- 2026-09-18 10:09 UTC Zcash NU7 upgrade and market expansion
- 2026-09-18 00:55 UTC Zcash NU7 upgrade and market expansion
- 2026-09-16 12:58 UTC Zcash NU7 network upgrade developments
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