What Is ZKsync (ZK)? The Ethereum Layer 2 Token Building Bank Chains

ZKsync (ZK) is the governance token of ZKsync, an Ethereum Layer 2 network, and it jumped 23.75% on Phemex spot in a single day in early October 2026. The token launched in June 2024 with a 21 billion cap. Matter Labs, the company behind ZKsync, sells its technology to banks as private chains that settle on Ethereum.

The move took ZK from a 0.01141 USDT close to 0.01412, its highest Phemex close since 1 June 2026. That was the largest one-day gain of all 301 Phemex markets with a move that day, 135 perpetuals and 166 spot pairs, and ATOM came next at 17.20%. Volume across exchanges ran 5.11 times the previous day's, by CoinMarketCap's count.

What Is ZKsync Crypto?

ZKsync crypto covers two things that share a name, the ZK token and the ZKsync network it governs.

The network began as a way to make Ethereum cheaper to use. Its main public chain is ZKsync Era, one of the Ethereum Layer 2 solutions that run transactions away from Ethereum and post proof of them back to the main chain.

Matter Labs writes the software under co-founder and CEO Alex Gluchowski. The ZKsync Association issued the token, and holders steer the protocol through ZKsync Governance.

The ZKsync token's one live job is voting. Holders hand their votes to delegates, who decide on protocol upgrades and token programs at one ZK per vote. ZKsync's token page also names ZK as the planned gas token of ZKsync Gateway, a settlement layer. The page describes Gateway as built and audited, with production waiting on a future governance proposal.

A search for the ticker turns up lookalikes. Zero-knowledge proofs are a general cryptography method, and Polyhedra's ZKJ and Boundless's ZKC are separate tokens, so the ticker to match is ZK alone.

Why Is ZKsync Going Up?

ZK's jump came on a day when the Layer 2 tokens and ETH in the table below also rose on Phemex spot, and ZK rose the most. Its gain was about twice OP's and four times that of Arbitrum, another Ethereum Layer 2.

Phemex's own book saw the same rush. The ZK/USDT pair turned over $1.12 million that day, 2.34 times the $480,100 of the day before.

ZKsync's own news in early October 2026 was about banks. Matter Labs signed a memorandum of understanding with NexBridge, a Tokyo provider of yen stablecoin infrastructure, which plans to market Prividium to Japanese financial institutions.

Two governance proposals landed on ZKsync's forum in the same week. The ZKsync Guardians, an emergency body with a veto over proposals, offered to dissolve themselves and pass that veto to the ZKsync Foundation. Matter Labs resubmitted the v31 protocol upgrade on the day of the spike, with a tentative rollout to ZKsync Era in late October if the vote passes.

None of these documents mentions the ZK token's price, supply or fees, so no single announcement explains the jump.

How Does ZKsync Work?

ZKsync runs transactions on its own chains and proves them to Ethereum with a zero-knowledge proof, a piece of math that shows the chain executed a batch correctly without Ethereum re-running it. Ethereum checks the proof, and the chain's balances settle there.

ZKsync Era is the public chain anyone can use. Prividium is the private version Matter Labs sells to institutions, giving each one its own chain whose transactions stay private while Ethereum verifies the results. In its May 2026 post on retiring ZKsync Lite, Matter Labs put its focus on "building Prividium and the Bank Stack of Ethereum."

ZKsync's token page lists two Prividium chains as live. Deutsche Bank runs Memento, a chain for tokenized fund management. ADI Chain, from IHC and First Abu Dhabi Bank, carries a stablecoin regulated by the UAE central bank. Cari Network, five US regional banks building tokenized deposits, targets production in 2026.

In September 2026, Matter Labs open-sourced Prividium's permissioning engine, and Germany's Bundesbank ran Prividium on its own servers for testing.

ZK Tokenomics

ZK has a 21 billion maximum supply, and ZKsync mints it on demand through capped minters, contracts that can each create up to a set amount. The ZK contract on ZKsync Era held a total supply of 15.36 billion ZK in early October 2026, or 73.14% of the cap. CoinGecko counts 10.82 billion of those as circulating.

Investors and the team hold 33.33%, about 7 billion ZK, on a schedule that runs from June 2024 to June 2028 with a one-year cliff. After 3.6% of supply unlocked in June 2025, up to about 173.4 million ZK a month unlocks until June 2028, according to the issuer's June 2026 filing with Blockworks.

A full monthly tranche comes to about $2.44 million at CoinMarketCap's early-October close of $0.01407. The tranche equals 1.60% of circulating supply, and the next release falls in mid-October.

The ZK airdrop sent 3.675 billion ZK, 17.5% of supply, to 695,232 eligible wallets. Its snapshot dates to 24 March 2024, claims opened in the week of 17 June 2024 and the window closed on 3 January 2025.

ZKsync staking has run once, as a pilot. Season 1 ran from 9 February to 11 May 2026. It peaked at 355 million ZK staked, 87% of its 400 million cap, across 4,397 addresses. The program's admins paused Season 2 on 20 May to design a staking setup for a planned decentralized sequencer. The pilot's capped minters expire on 31 December 2026.

How to Buy ZK Safely

Phemex lists ZK on its ZK/USDT spot pair and has delisted the ZK perpetual, so spot is the only live ZK market there.

1. Open a Phemex account, finish the identity checks and deposit USDT to your spot wallet.

2. Search the spot market for the ZK/USDT pair and open it.

3. Use a limit order to set your price, because on a token that can move a fifth in a day, a market order can fill well away from the last trade.

4. Check the contract before you withdraw. ZK lives at 0x5A7d6b2F92C77FAD6CCaBd7EE0624E64907Eaf3E on ZKsync Era, and the Ethereum version at 0x66A5cFB2e9c529f14FE6364Ad1075dF3a649C0A5 is a bridged token whose origin is that Era contract.

5. Send a small test amount first, since a transfer on the wrong network or to a lookalike token can't be reversed.

The button below opens Phemex's crypto futures market, where ZK has no live perpetual. Futures use leverage, and a leveraged position is closed automatically if losses reach its margin.

Is ZKsync Dead?

ZKsync Era still runs, and the chain that shut down was ZKsync Lite, the original network Matter Labs launched in 2020. Lite was one of the first ZK rollups in production and served more than 3.5 million addresses before its block production stopped on 4 May 2026.

Matter Labs' sunset post put the claim contract for remaining Lite balances under Token Assembly governance, so users withdraw from Ethereum without relying on Matter Labs.

The token makes the weaker case. CoinGecko records ZK's all-time high at $0.3210 on 16 June 2024 and its all-time low at $0.007122 on 14 August 2026, and the early-October CoinMarketCap close stood more than 95% below that peak. On Phemex, ZK's lowest daily close came on 12 August 2026 at 0.00721 USDT, and the early-October close finished 95.84% above it.

A chain with bank pilots and a pending upgrade is alive, while its token trades at a small fraction of its launch-month price.

What Are the Risks of ZKsync?

Supply Keeps Arriving Until June 2028

The monthly investor and team release runs for about 20 more months, until June 2028. Every tranche adds supply that buyers have to absorb, and a rally like the early-October one hands recipients a better price to sell into.

A Cap That Governance Can Raise

ZKsync's token page calls the 21 billion limit a fixed supply with no inflation. The token documentation says a protocol governance upgrade can increase supply, and about 5.64 billion ZK remain unminted. Control over those votes is also narrowing, since the Guardians proposal would hand their veto to the ZKsync Foundation.

Minting Has Gone Wrong Before

In April 2025 an attacker used a compromised admin key on three airdrop distributor contracts to mint 111.9 million unclaimed ZK, then swapped about 67.2 million of them for ETH. The attacker returned 90% of the funds under a safe-harbor offer from the Security Council, and the issuer's June 2026 filing says the attack never reached the protocol or the ZK token contract itself.

Value Accrual Is Still a Plan

ZK holders get votes and no fee income yet. A November 2025 forum proposal would route interop fees and enterprise licensing income into buying ZK, and the fee-flow design posted in May 2026 burns all of the ZK it collects at launch.

The issuer's June 2026 filing says no token repurchase program exists, and the token page leaves the switch to governance. Forum threads in September 2026 asked where the value for ZK holders comes from as Matter Labs signs bank deals.

Is ZKsync a Good Investment?

The case rests on a link between the bank business and the token that doesn't exist yet. At the early-October close, the 10.82 billion circulating ZK came to about $152 million and all 21 billion to about $295 million.

For ZK to earn from Prividium, governance has to switch on the fee flow and bank chains have to generate protocol fees. Buyers also have to absorb the monthly releases to June 2028. The data in early October 2026 shows the bank deals arriving and the token earning nothing from them so far.

Starknet, another zero-knowledge Layer 2, gives its token jobs ZK doesn't have yet. Phemex's guide to why Starknet listings show a 10 billion STRK cap shows users paying Starknet fees in STRK and staking it.

Without a fee switch before vesting ends in June 2028, ZK stays a voting token with a monthly supply overhang.

Frequently Asked Questions

Can you stake ZKsync?

Not through a live program in early October 2026. ZKsync's staking pilot paid ZK rewards from February to May 2026 and peaked at 355 million ZK, and its admins paused Season 2 in May 2026.

Is ZKsync a layer 2?

ZKsync Era, the network's main public chain, is an Ethereum Layer 2 that proves its transactions to Ethereum with zero-knowledge proofs. Matter Labs' Prividium chains for banks use the same stack and also settle on Ethereum.

Who created ZKsync?

Matter Labs created ZKsync and still writes its software, with co-founder Alex Gluchowski as chief executive. The ZKsync Association issued the ZK token in June 2024, and token holders govern the protocol through delegates.

Where can I buy ZK?

Phemex lists ZK on its ZK/USDT spot pair, and ZK has no live perpetual there. On-chain, the canonical token lives on ZKsync Era with a bridged version on Ethereum, so match the contract address before any swap.

Bottom Line

ZKsync's bank strategy and its token have run on separate tracks, and the early-October rally priced in a bridge between them that governance has designed and not yet switched on. The vote that would route Prividium fees into ZK matters more to holders than any bank deal. Until it passes, each new partner grows Matter Labs' business while the monthly releases grow ZK's float.

Disclaimer: This article is for informational purposes only and is not financial advice. Cryptocurrency trading involves substantial risk. Always do your own research before making investment decisions.