About zERC
What is zERC20?
zERC20 is a new ERC20 token that allows you to send tokens with privacy preserved, using the same operations as sending regular ERC20 tokens. No special apps or dedicated wallets are required; you can use it directly from your usual wallets like Metamask.
Unlike traditional privacy protocols, zERC20 offers an incredibly refined UX. It can be used directly on many L1s/L2s like Ethereum, BNB Chain, Arbitrum and Base, and transfers are Cross-rollup and Chain-agnostic by default. Currently, it operates rapidly between EVM chains, and in the future, it will be connectable not only to the ETH mainnet but also to non-EVM L1s.
These features are realized by EIP-7503 (zkWormhole).zERC20 creates a future where anyone can naturally use privacy, with the same ease of use as regular ERC20.
Features
What can it do?
Send privately!
Chains confirmed to be supported at the testnet release on November 15, 2025
USDC on Arbitrum
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zERC20 Private Transaction
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USDC on Arbitrum
Cross-rollup and chain-agnostic by default!
In the future, instant cross-chain transfers will be possible not only with ETH mainnet but also with non-EVM L1s!
USDC on Arbitrum
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zERC20 Private Transaction
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USDC on Base
Use any EVM-supporting wallet
Private transfers can be done with your usual wallet, just like regular transfers, without needing to connect to the dapps
About zERC
Why is this important?
Imagine your bank account balance, salary deposits, and monthly payments all transparent and visible to anyone. This is the current challenge of blockchain. Every transaction is permanently public, making your financial situation completely exposed.
The strength of blockchain is not transparency, but verifiability. Excessive transparency that creates risk is not necessary.
Architecture
How it works using EIP-7503 (zkWormhole)
Furthermore, this mechanism even conceals the fact that a "privacy product is being used." Since ZKP can prove that a burn address is an ownerless, unmanned address, countless burn addresses can be generated, and transfers to them are indistinguishable from regular ERC20 transfers. This allows for high privacy while using a regular wallet as a regular ERC20.
Technology
Technology Used Behind the Scenes
Behind zERC20, three mechanisms are at work. Each plays a crucial role in enabling private transfers.
Team
Who built it?
zERC20 was conceived by Nuno, INTMAX Core Dev, and developed by his Intmax team.
While the INTMAX protocol provides vertical scaling to handle large volumes of transactions with its unique layer design, zERC20 aims for horizontal scaling by operating on existing L1/L2s as an ERC20 that can be immediately used on many L2s such as Arbitrum and Base, prioritizing wallet compatibility and UX.
INTMAX Protocol (Vertical Scaling)
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Unique layer design
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High volume transaction processing
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Maximizes performance
zERC20 (Horizontal Scaling)
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Operates on existing L1/L2s
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Ready for use on Arbitrum, Base, etc.
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Prioritizes wallet compatibility and UX
Privacy tips
How to Stay Private?
To ensure your transactions remain untraceable, please follow 3 rules:
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Transfer, Don't Just Wrap Wrapping your assets does not hide them. The privacy protection only applies when you send or transfer the zAsset to another wallet.
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Use Round Numbers Avoid specific amounts like
12,345 USDCor1.42 ETH. Instead, send standard amounts like100,1,000, or10. Unique numbers are easier to track.
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Wait Before You Redeem Do not withdraw your funds immediately after wrapping. Waiting a while breaks the time-link between your deposit and withdrawal.
Latest updates
What's new in zERC20
zJPYC Comes to Kaia: zERC20 Brings Composable Privacy to Japanese Yen on Kaia
zERC20 is bringing its privacy infrastructure to Kaia, introducing zJPYC on Kaia
zERC20 Expands Privacy Infrastructure for Japanese Yen with zJPYC on Polygon
zERC20 expands its privacy infrastructure support to JPYC with the launch of zJPYC on Polygon.