Zcash sets January target for quantum-resistant payments as ZEC rebounds

What happened

Zcash developers have set January 2027 as their target for adding quantum-resistant payment support to the network. Zakura engineer Roman Akhtariev announced the timeline in a technical update, saying the team plans for post-quantum signature opcodes to land in Zcash in January.

The proposal focuses on transparent transactions, which account for approximately 70% of the cryptocurrency's issued supply. Transparent Zcash payments currently use elliptic-curve cryptography, and the developers are considering hash-based constructions such as Winternitz One-Time Signatures.

The January window remains a development target, and the team has not confirmed when the changes would activate on the network, published a final upgrade specification or set a migration schedule.

Why it matters

About 70% of issued ZEC sits in transparent addresses, where payment details are public on the blockchain, similar to Bitcoin. The work follows warnings that sufficiently powerful quantum computers could eventually break current protections, which might let an attacker recover private keys from public keys that are already visible on-chain.

Zcash is not yet fully protected against quantum attacks. The shielded pool would need separate development, so the January plan covers transparent payments first.

The market reaction was quick. ZEC rebounded more than 11% over the past 24 hours and traded at 1,224.57, with the 24-hour range at $1,114.07 and $1,245.56.

What the data shows

ZecStats data put the transparent pool at approximately 11.96 million ZEC on October 9, or 70.4% of the roughly 16.98 million coins issued. Another figure cited nearly 12 million ZEC in transparent addresses, about 70% of issued supply.

ZEC traded at 1,224.57, up 11% over 24 hours. The 24-hour low and high were $1,114.07 and $1,245.56. Trading volume rose 80% in the same window.

Shielded transactions reached a four-year high, with 62,379 transactions sent last week, the highest weekly total since 2022. Total ZEC futures open interest rose more than 1% to $2.60 billion in 24 hours.

Background

Zakura is an alternative Zcash full-node implementation developed by Valar Group and Project Tachyon. Its first release came in July 2026, with better synchronization and support for the Ironwood upgrade.

The Grayscale Zcash ETF launch drew close to $1 billion in assets within about a month as the token rallied. Grayscale Research forecast that ZEC could reach $8100 by 2030.

The discussion follows a warning from researcher Justin Drake urging the industry to prepare a "bunker mode" against future quantum threats and AI-assisted attacks on wallet security. Vitalik Buterin separately explained how AI could weaken quantum-resistant crypto signatures in 2 Years.

What is still unclear

• The January window is a development target, and no confirmed network activation date has been announced.
• Post-quantum protection for the privacy pool will require separate development, so it is unclear when shielded transactions would get similar safeguards.
• It is also unclear whether users would face a mandatory migration, because no migration schedule has been announced.

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