NullMask Protocol Live on Arbitrum: How to Access ZK Privacy?

NullMask protocol is now live on Arbitrum, bringing zero-knowledge (ZK) privacy functionality to Ethereum's Layer 2 ecosystem. The integration allows users to access privacy-focused deposits, transfers, withdrawals, and balance management through NullMask's Arbitrum interface.

Following the November 9, 2026 announcement, crypto users may be wondering how the protocol works, whether they need a new wallet, and what transaction details remain visible.

This guide explains how to access NullMask on Arbitrum, how its privacy technology works, the potential costs, and the security considerations before depositing funds.

Key Takeaways

• NullMask has expanded to Arbitrum, offering privacy-focused asset management through a dedicated interface at arb.nullmask.io.
• NullMask uses shielded balances and privacy mechanisms intended to reduce public visibility of transaction relationships, although deposits and withdrawals are not completely anonymous.
• Users should verify the official Arbitrum integration, supported assets, network fees, and smart contract security before transferring funds.

What Is NullMask Protocol on Arbitrum?

(image source: x.com/NullMaskio)

NullMask is a zero-knowledge privacy protocol designed to help cryptocurrency users manage and transfer digital assets without exposing their entire transaction history on a public blockchain.

The protocol uses shared shielded pools, wallet-based authorization, and transaction relayers to separate private activity from publicly visible wallet transactions. Unlike privacy-focused blockchains that require users to adopt a different ecosystem, NullMask is designed to work with existing Ethereum Virtual Machine (EVM) wallets.

On November 9, 2026, Arbitrum highlighted NullMask's integration, confirming that users could access private transfers, deposits, and balance checking through the protocol. NullMask had announced its Arbitrum availability earlier in November.

The integration expands access to privacy tools within the Arbitrum ecosystem, where users typically conduct transactions through publicly observable smart contracts.

Importantly, Arbitrum One is an optimistic rollup, not a ZK rollup. NullMask adds a separate privacy mechanism to the network rather than changing Arbitrum's underlying consensus or scaling architecture.

How Does NullMask's ZK Privacy Technology Work?

NullMask uses zero-knowledge technology and a shared shielded pool to reduce the amount of transaction information available to outside blockchain observers. Zero-knowledge proofs allow a system to verify certain conditions without revealing all the underlying information.

In a privacy protocol, this can help establish that a transaction is authorized without publicly exposing its complete history. NullMask's documented transaction model involves several components:

• Shielded pool: Users deposit supported assets into a smart contract that holds funds associated with private balances.
• Private account: Users access their shielded balance through account keys derived from their existing wallet.
• Transaction relayer: NullMask submits supported actions on-chain, reducing the public association between a user's wallet address and those actions.
• Wallet authorization: Users sign transactions with their existing wallet rather than handing their private key to the protocol.
• Withdrawal mechanism: Users can transfer assets from their private balance to an external address, although withdrawal details remain publicly observable.

The distinction between private activity and completely anonymous transactions matters. NullMask's documentation explicitly acknowledges that outside observers may attempt to associate deposits with withdrawals through their timing and amounts.

How to Access NullMask on Arbitrum?

Users can access the Arbitrum integration through the project's dedicated application at arb.nullmask.io. The process follows NullMask's established wallet-based workflow, although users should check the Arbitrum interface for its current supported assets and available functions.

1. Prepare a compatible EVM wallet
   Use a self-custody wallet such as MetaMask or Rabby. Make sure the wallet can access Arbitrum and contains sufficient ETH to cover applicable network fees.
2. Open the official Arbitrum application
   Navigate directly to arb.nullmask.io and verify the domain before connecting. Avoid links from unsolicited messages or unofficial token promotions.
3. Connect and authorize your wallet
   Follow the application's connection instructions. NullMask's established setup uses a wallet signature to derive private account keys, without requiring users to disclose their recovery phrase.
4. Review the privacy network configuration
   NullMask can add a dedicated wallet network connection to display private balances. If the Arbitrum application offers this option, approve the configuration through the official interface rather than importing an unverified custom RPC endpoint.
5. Check the available assets and deposit quote
   Select a supported asset and review its minimum amount, protocol charges, and gas requirements. Start with a small amount and confirm that the deposit is successfully credited before making larger transfers.
6. Manage your private balance
   Once credited, review the available Send, Withdraw, and other supported features. Confirm whether an action is genuinely private or will create a publicly visible withdrawal before signing.

NullMask's general documentation explains that deposits undergo screening before being credited. The project's older network documentation primarily describes Ethereum and Base, so users should not assume their asset lists, chain IDs, or contract addresses also apply to Arbitrum.

What Information Does NullMask Keep Private?

NullMask primarily aims to protect transaction relationships and shielded account balances from public blockchain observers. However, privacy differs depending on the transaction type.

These distinctions reflect NullMask's documented privacy model. The exact behavior of each operation should be confirmed against the Arbitrum deployment. The protocol operator may also have visibility into information that ordinary blockchain observers cannot access. Consequently, NullMask should not be treated as a guarantee of complete anonymity.

What Is the Role of a Custom RPC Privacy Wallet?

NullMask's wallet integration presents a private balance through a dedicated network connection. This resembles an EVM wallet privacy proxy from the user's perspective, allowing private account activity to be accessed without creating a completely separate wallet.

Nevertheless, configuring an ordinary custom RPC endpoint does not automatically make public Arbitrum transactions private. Privacy depends on using the protocol's supported shielded transaction mechanisms, not simply changing the network endpoint displayed in a wallet.

NullMask Fees and Supported Assets on Arbitrum

NullMask combines blockchain network fees with protocol-level charges for certain operations. Its published general fee documentation lists the following structure:

Network fees and, where applicable, liquidity pool trading fees may apply separately. These figures come from NullMask's general documentation and should not be treated as an independently verified Arbitrum-specific fee schedule.

Although Arbitrum generally offers lower transaction costs than Ethereum mainnet, actual expenses depend on network conditions, the operation selected, and the protocol's current charges.

Similarly, users should confirm which assets are enabled on the Arbitrum interface. Support for ETH, USDT, or USDC on another NullMask deployment does not establish that the same assets are available on Arbitrum. For more knowledge about NullMask (MASK) price prediction, check here!

Is NullMask on Arbitrum Safe to Use?

NullMask offers a privacy-focused transaction model, but using the protocol still involves smart contract, operational, and wallet security risks. According to its documentation, users authorize spending through their existing wallets, while deposited assets are held by a shared pool smart contract.

The protocol also screens deposits and withdrawal recipients as part of its compliance procedures. Several factors deserve attention before depositing assets:

• Smart contract security: Confirm the correct Arbitrum deployment and look for independently available audit reports covering the relevant contracts.
• Privacy limitations: Public deposits, withdrawals, and transaction timing can reveal information even when transfers inside the pool are shielded.
• Compliance screening: Deposits may be delayed or rejected, and withdrawal destinations can undergo additional checks.
• Operational dependencies: Relayer availability, interface reliability, and transaction processing can affect access to funds.
• Wallet security: Malicious signatures, phishing websites, and exposed recovery phrases can compromise assets regardless of the protocol's privacy design.

NullMask's stated noncustodial authorization model is a relevant security characteristic, but it does not eliminate smart contract vulnerabilities or operational risks. Users should also review the latest documentation and independently verify security assessments before committing significant assets. Would you buy and hold NullMask (MASK)? 

NullMask Season One Points and Airdrop Eligibility

(image source: airdrops.io/nullmask/)

NullMask has introduced a points-based community incentive program known as Season One. The project's October 2026 announcement described a 90-day campaign beginning October 19, intended to reward qualifying protocol activity. Its broader roadmap also connects the points system to community incentives.

However, earning NullMask points should not automatically be interpreted as guaranteed airdrop eligibility. The protocol is also associated with the MASK token, which is tracked separately on Solana-based token markets.

A token's existence does not establish that every privacy protocol user will receive a distribution. For Arbitrum users, the important questions are whether transactions on the new network qualify for points, whether additional registration is required, and how any eventual rewards would be calculated.

These details should be confirmed through the current official campaign interface. Users should avoid making unnecessary transactions solely on the assumption of receiving future tokens.

Conclusion

NullMask's Arbitrum launch introduces another privacy-focused option for users who want greater confidentiality when managing digital assets on Ethereum Layer 2 infrastructure. Its shielded pool model, existing-wallet compatibility, and private transaction features may appeal to users concerned about publicly visible blockchain activity.

However, privacy is not absolute. Public deposit and withdrawal records, compliance checks, smart contract risks, and operational dependencies remain important considerations.

Before using NullMask on Arbitrum, confirm the official application, supported assets, current fees, and the security of its deployed contracts. Starting with a small transaction is a sensible way to evaluate the experience.

Readers interested in exploring broader cryptocurrency markets can visit Bitrue Exchange, while the Bitrue Blog provides additional guides covering blockchain technology, Layer 2 networks, and digital asset developments.

FAQ

Is NullMask protocol live on Arbitrum?

Yes. NullMask announced its Arbitrum integration in November 2026, and Arbitrum subsequently highlighted its privacy transfer, deposit, and balance management capabilities. Users can access the dedicated application at arb.nullmask.io.

How can I use NullMask on Arbitrum with MetaMask?

Open the official Arbitrum application and connect a compatible MetaMask wallet. Follow the account setup instructions, confirm the available assets and fees, and use the supported deposit interface to access a shielded balance.

Are NullMask transactions completely anonymous?

No. NullMask is designed to conceal certain transaction relationships from public observers, but deposits and withdrawals can still reveal blockchain information. Its documentation also distinguishes public privacy from information accessible to the protocol operator.

Do I need MASK tokens to use NullMask on Arbitrum?

NullMask's documented wallet workflow uses supported deposit assets and ETH for applicable network charges. A requirement to hold MASK specifically for the Arbitrum privacy service has not been established, so users should verify the current interface rather than purchasing tokens solely for access.

Does using NullMask on Arbitrum qualify for an airdrop?

Participation in NullMask's points program does not guarantee an airdrop. Users should consult the official Season One rules to confirm whether Arbitrum activity is eligible, how points are calculated, and whether any future token distribution has been announced.

Disclaimer: The views expressed belong exclusively to the author and do not reflect the views of this platform. This platform and its affiliates disclaim any responsibility for the accuracy or suitability of the information provided. It is for informational purposes only and not intended as financial or investment advice.