ZEC was the fastest horse out of the gate following Democrats' retaking of the Senate.

Traditional markets and crypto both bled into Tuesday's election. But once Democrats won the Senate, markets ripped higher, with ZEC handily outpacing the crypto majors.

Tonight, Zcash gets another potential boost with NU7, its next major network upgrade. Set to activate at block 3,543,405, NU7 tackles some of the practical problems standing in the way of Zcash's growth: slow confirmations, low transaction throughput, outdated infrastructure, and how the network pays miners as rewards shrink.

Let me break down what the upgrade brings and how it fits into Zcash's broader roadmap.

What's Coming in NU7?

At its core, NU7 makes four changes:

• Faster payments: Cuts the target time between blocks from 75 to 25 seconds.

• Safeguards for scaling: Limits shielded activity per block to keep the network from being overwhelmed.

• New token economics: Sets aside 60% of transaction fees to help fund future mining rewards.

• Retirement of old infrastructure: Disables the v4 transaction format, effectively retiring Zcash's original shielded pool, Sprout.

First, speed. Cutting the time between blocks means Zcash payments can receive their first confirmation in 25 seconds on average, rather than 75. That brings Zcash closer to its goal of being usable digital cash, while also improving transfers like exchange deposits and movements across chains.

Since blocks stay the same maximum size, producing three times as many blocks triples the network's raw throughput. But that doesn't mean three times as many private transactions. NU7 also limits the amount of shielded activity each block can hold, so capacity for newer Orchard-style transactions rises about 2.3 times instead.

Second, the safeguards. Shielded transactions use zero-knowledge proofs, which are more demanding for nodes to verify and for wallets to pick up on. Without safeguards, attackers could flood blocks with transactions that slow down nodes or overwhelm wallets with data to sift through. The new caps aim to prevent that as the network speeds up.

Third is the Network Sustainability Mechanism, or NSM. Like Bitcoin, Zcash relies on miners to secure the network. Their earnings in new coins and transaction fees make up its security budget. As block rewards keep halving, those payments could eventually become too small to keep enough miners participating, making attacks cheaper.

To get ahead of this, NU7 will give miners 40% of transaction fees and set aside the other 60%. That ZEC is effectively put into storage; it's temporarily taken out of circulation and will gradually return as extra mining rewards starting around February 2031. In other words, the network is saving some of today's fees to help pay for its security tomorrow, without changing Zcash's roughly four-year halving schedule or 21 million ZEC cap.

Finally, there's some fall cleaning. Zcash launched with Sprout, its first shielded pool, in 2016. Since then, newer pools like Sapling, Orchard, and Ironwood have made it largely obsolete. The last maintained wallet supporting Sprout was already deprecated, but keeping the old system in the protocol still adds complexity and security risks.

NU7 finishes that retirement by banning all v4 transactions, the only format that can spend Sprout funds. As of Thursday morning, roughly 12,200 ZEC remained in Sprout, and those coins will become unspendable unless a future upgrade creates a recovery path. That ban also covers older Sapling and transparent v4 transactions, so wallets that still build them will need to move to newer formats. Existing Sapling funds stay spendable once the wallet upgrades.

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The Road to Tachyon

Overall, NU7 marks the next step in Zcash's grander ambition of turning the protocol into one that can handle transactions at the scale of a mainstream payments network.

That obviously requires more than producing blocks faster. As Zcash cofounder Sean Bowe and ZK researcher Dev Ojha explained in Monday’s episode, the network also needs to make private transactions easier to process, help wallets keep up with much higher activity, and improve how blocks travel across its proof-of-work network. I'd highly recommend checking out the episode or, at the very least, reading Peaster's overview of the full roadmap from that conversation.

The Complete Zcash Roadmap | Sean Bowe and Dev Ojha on Bankless

What would it take for private money to work at global scale?

Bankless

The biggest effort still ahead is Tachyon, Bowe's redesign of the cryptography behind Zcash's private payments. Today, nodes check a separate zero-knowledge proof for each shielded transaction and store an ever-growing list of nullifiers so the same funds can't be spent twice. Tachyon aims to roll many of those proofs into one and let nodes shed most of that historical bloat, lifting two of the main ceilings on throughput. Along the way, the redesign opens a cleaner path to the post-quantum privacy Zcash has been striving for. There's no activation date yet.

There's work beyond Tachyon, too. Wallets still need a way to find incoming payments without scanning every transaction, and researchers are pushing private information retrieval (PIR) for that. The network also needs faster block sharing as volumes rise. All of that is still in development.

The Bigger Picture

The market got to Zcash before NU7 did. ZEC led the post-Senate rally, and tonight's upgrade gives that attention something real to point to: faster confirmations, more room for private transactions, and a plan for paying miners as block rewards shrink.

None of that settles whether Zcash can work as private cash at scale. NU7 buys headroom until Tachyon, hopefully, removes the ceiling. Until there's a date, the best Zcash can hope for is that the momentum holds.

I trust it will.