EVM-Compatible Networks Beyond Ethereum: Using Safe Wallet on Polygon, Arbitrum, and Optimism

A treasury manager at a decentralized autonomous organization faces a practical constraint: maintaining multisignature security across multiple blockchains without deploying separate wallet infrastructure on each one. Transaction costs on Ethereum mainnet can exceed hundreds of dollars for complex operations, while newer Layer 2 solutions and sidechains offer dramatically lower fees. The technical question is whether a multisig architecture can function identically across these different networks, and the operational answer depends on understanding how Safe Wallet’s design works on EVM-compatible networks.

Safe Wallet, formerly known as Gnosis Safe, is built on smart contract architecture that can be replicated across any blockchain that implements the Ethereum Virtual Machine standard. This means teams can deploy a multisignature wallet with identical security properties and governance logic on Polygon, Arbitrum, Optimism, and dozens of other EVM-compatible networks without rewriting the underlying contracts or changing approval workflows. The practical benefit is substantial: a transaction that might cost 0.5 ETH ($1,500 or more) on Ethereum Layer 1 could cost less than $1 on Arbitrum or Optimism, while maintaining the same multisig threshold requirements and permission models that protect shared treasuries.

Why EVM compatibility matters for multisig wallet deployment

The Ethereum Virtual Machine is a standardized execution environment that defines how code is compiled, stored, and executed on a blockchain. Any network that implements this standard can run the same smart contracts with identical behavior, which is why developers can deploy a multisignature wallet to Polygon, Arbitrum, Optimism, or Base and expect the contract logic to function identically. This is fundamentally different from porting a wallet to a different blockchain architecture entirely, which would require rewriting contracts in a different language and testing against different execution rules.

For teams managing treasuries across EVM-compatible networks, this standard creates a powerful opportunity. A multisignature wallet designed for Ethereum mainnet can be deployed to an EVM-compatible network within hours rather than weeks, without modifying the core contract code. The signing logic, approval thresholds, transaction queuing, and execution mechanisms all work the same way. A 3-of-5 multisig threshold on Ethereum remains a 3-of-5 threshold on Arbitrum; the cryptographic signatures and on-chain verification remain equally valid.

The financial difference is decisive. Deploying a Safe multisig wallet to Ethereum mainnet might cost $2,000–$5,000 in deployment gas fees, while subsequent transactions (approvals, executions, fund transfers) each incur individual costs. On Polygon or Arbitrum, the same deployment costs $10–$50, and transaction fees remain under $1 per operation. This fee structure allows smaller DAOs, development teams, and organizations to use institutional-grade multisig security without incurring operational costs that exceed the value of small transactions.

The trade-off is not about security degradation but about network finality and liquidity. Ethereum mainnet offers the highest level of network security through its validator base and historical finality, while Layer 2 solutions like Arbitrum and Optimism provide faster confirmation and lower costs while deriving some security from Ethereum through their settlement layer. For many operations—particularly governance votes, treasury management, and routine fund movements—the security model of EVM-compatible networks is adequate; for others, mainnet deployment remains the appropriate choice.

Layer 2 solutions: Arbitrum and Optimism as multisig hubs

Arbitrum and Optimism are optimistic rollup designs that batch transactions off-chain and periodically settle to Ethereum mainnet. For a treasury using a multisignature wallet, this architecture means transactions can be approved, executed, and settled rapidly on the Layer 2 while maintaining the ability to move funds back to mainnet if needed. A Safe multisig wallet on Arbitrum or Optimism follows the same approval logic as an Ethereum wallet, but users experience faster finality and dramatically lower costs.

The operational difference is most visible in batch transactions and complex governance operations. If a DAO wants to execute ten fund transfers, update token approvals, and adjust governance parameters in a single transaction batch, the cost on Ethereum mainnet might be $500–$1,000 for the entire operation. On Arbitrum or Optimism, the same batch costs $2–$5. This fee difference fundamentally changes what operations are economically justifiable. Smaller treasuries can perform routine maintenance and governance actions that would be prohibitively expensive on mainnet.

The security model of optimistic rollups relies on a fraud-proof mechanism: transactions are assumed to be valid unless someone submits evidence of fraud within a challenge window (typically 7 days). During this period, funds cannot be withdrawn back to mainnet, but they remain under the control of the multisignature wallet’s signers. For teams that rarely need to move funds between Layer 2 and mainnet, this is not a practical limitation; for treasuries that require frequent bridging, the confirmation delay is an important consideration when selecting between different EVM-compatible networks.

Polygon takes a different approach as a sidechain rather than a rollup. It uses a delegated proof-of-stake validator set to secure the network, with periodic checkpoints to Ethereum mainnet. A multisignature wallet deployed to Polygon settles transactions immediately without a challenge window, making it suitable for teams that want lower fees without Layer 2 finality delays. The trade-off is that Polygon’s security depends on its own validator set rather than deriving full security from Ethereum, though the checkpoint mechanism provides protection against most attack scenarios.

Safe multisig wallet configuration across different networks

Deploying a Safe multisignature wallet to an EVM-compatible network requires specifying several parameters. The signer list defines which addresses have approval authority, the threshold sets how many signers must approve each transaction, and the execution address determines which account will execute approved transactions. These parameters are identical whether the wallet is deployed to Ethereum, Polygon, Arbitrum, or Optimism; the configuration interface and the resulting contract behavior remain consistent.

A typical configuration for a development team might use a 2-of-3 multisig threshold: any two of three signers can approve and execute a transaction. For a larger DAO treasury, a 4-of-7 or 5-of-9 threshold might be more appropriate. The multisignature wallet itself is created through a factory contract that deploys a new proxy pointing to the same core safe contract logic, which is why redeploying to a different EVM-compatible network involves minimal additional code. You can learn more about Safe Wallet deployment across different networks at sites.google.com/cryptowalletextensionus.com/safe-wallet-gnosis-safe/.

One important distinction across different EVM-compatible networks is the native asset. Ethereum’s network token is ETH, Polygon’s is MATIC, Arbitrum’s is ARB (though it also supports ETH), and Optimism’s is OP (with ETH as the primary asset). A multisignature wallet on Polygon holds MATIC as its native asset and uses MATIC for transaction fees; the same wallet on Arbitrum holds ETH or ARB and uses ETH or ARB for fees. The contract logic remains identical, but the specific tokens involved in fee payments differ based on each network’s design.

Role-based access control can be layered on top of the basic multisig structure. Some signers might be designated as “transaction proposers” who can suggest operations but not execute them. Others might be “executors” who can finalize approved transactions. This granular permission model helps larger organizations distribute responsibility while maintaining security. A development DAO might have core team members as signers, a finance sub-committee as proposers, and an automated system as an executor for routine operations. The multisignature wallet supports this complexity across all EVM-compatible networks through consistent contract interfaces.

Fee comparison and network selection for treasury management

The transaction cost difference across EVM-compatible networks is the primary driver for network selection in most treasury management scenarios. An Ethereum multisig wallet executes a transaction through the following steps: submit approval signatures, execute the transaction, and update the wallet state. Each step consumes gas. On Ethereum mainnet, gas prices typically range from 20–100 gwei per unit during normal conditions, with complex transactions consuming 100,000–500,000 gas units. This translates to $200–$2,000 per transaction at current ETH prices.

On Arbitrum, the same transaction consumes similar gas units in terms of computation, but the actual fee is orders of magnitude lower. Arbitrum’s fee mechanism includes a per-byte cost for the transaction data compressed and posted to mainnet, plus a smaller compute cost. Typical multisig transactions on Arbitrum cost $0.10–$2.00. Optimism uses a similar model with comparable fees. Polygon’s sidechain model produces even lower costs because transactions do not need to be posted to mainnet regularly; typical fees on Polygon are $0.01–$0.50 per transaction.

The correct network choice depends on treasury size, transaction frequency, and the requirement for mainnet finality. A DAO with a multi-million-dollar treasury might justify the higher Ethereum mainnet fees for maximum security and decentralization. A development team managing a smaller fund pool might use Arbitrum for routine operations while keeping mainnet as a final settlement layer. An organization that primarily operates within a single ecosystem—using Polygon-based DeFi protocols, for example—might maintain its entire multisig wallet on Polygon without regular bridging to mainnet.

Batch transactions change the cost calculus substantially. If a DAO needs to execute fifty transactions in a single week, doing so on Ethereum mainnet might cost $10,000–$100,000. On Arbitrum or Optimism, the same set of operations costs $50–$500. This fee difference allows teams to implement more granular treasury management: making separate transactions for each operation rather than batching unrelated transfers together to save fees. The trade-off is between transaction granularity and confirmation finality.

Cross-chain treasury strategy: bridging and liquidity considerations

A treasury holding assets across multiple EVM-compatible networks faces the practical problem of moving funds between them. Bridges allow users to transfer assets from one network to another by locking tokens on the source chain and minting equivalent tokens on the destination chain. For a multisignature wallet, the bridge interaction looks like any other smart contract approval: the wallet approves a bridge contract to spend tokens, then initiates a transfer. The approval process is identical whether the multisig wallet is on Ethereum, Polygon, or Arbitrum.

The complexity arises because different bridges have different security models and liquidity characteristics. The official Polygon bridge, Arbitrum’s native bridge, and Optimism’s gateway all have different confirmation delays and fee structures. A third-party bridge like Stargate or Across offers different trade-offs between speed and cost. For a multisignature wallet managing a treasury, the decision about which bridge to use should be made at the governance level; individual signers should not be choosing bridges independently, as this creates risk of asset loss or transaction failure.

Liquidity is equally important. Moving 1,000 USDC from Ethereum to Polygon is straightforward if USDC liquidity exists on both networks. But moving an illiquid token across networks might be impossible or prohibitively expensive. A treasury should maintain a clear understanding of which tokens are actively traded on which networks and plan bridging operations accordingly. A multisignature wallet provides the security mechanism to approve these moves, but it does not solve the underlying liquidity problem.

The most practical strategy for organizations using EVM-compatible networks is to maintain separate multisig wallets on networks where significant treasury funds are held, while using bridges for occasional large transfers. A DAO with primary activity on Arbitrum might maintain a Safe multisig wallet on Arbitrum for routine governance and a smaller wallet on Ethereum mainnet for long-term treasury security. This approach distributes operational complexity while maintaining security and reducing unnecessary bridging risk.

Integration with DeFi protocols across EVM-compatible networks

One of the primary benefits of multisignature wallet support across EVM-compatible networks is the ability to interact with DeFi protocols deployed on those same networks. A treasury holding assets on Polygon can use a Polygon-based multisig wallet to directly interact with Polygon DeFi protocols—lending platforms, DEXs, yield aggregators—without needing to bridge assets to mainnet first. This reduces fees and complexity while maintaining multisig security over treasury operations.

The transaction pattern is straightforward: the multisignature wallet approves a token to a protocol smart contract, then executes a transaction that interacts with the protocol. On Ethereum, this might cost $100–$500. On Polygon or Arbitrum, the same operation costs $0.10–$2. For a DAO conducting regular treasury management—rotating funds between lending protocols to optimize yield, adjusting token positions, or claiming rewards—this fee difference accumulates to tens of thousands of dollars annually.

The security model remains consistent: every transaction requires the configured number of signatures before execution. A multisignature wallet does not blindly trust DeFi protocols; it simply allows the treasury’s designated signers to approve interactions through a transparent, on-chain governance process. If a protocol is compromised or exploits a vulnerability, the multisig wallet offers no protection against poor decisions by signers, but it does prevent any single compromised key from draining the treasury unilaterally.

Complex operations such as flash loan transactions or swap batches can be executed through the multisignature wallet on any EVM-compatible network. The wallet contract can be called by external smart contracts in the same way as a regular address, enabling advanced strategies. A treasury might use a flash loan to rebalance positions, execute an atomic swap, and update protocol approvals all within a single transaction—all approved through the multisig voting process and secured by the wallet’s smart contract architecture.

Security model consistency across EVM-compatible networks

The core security proposition of a multisignature wallet is that no single compromised key can authorize transactions. This property holds identically across all EVM-compatible networks because the underlying cryptographic verification is the same. A transaction submitted to a multisig wallet requires signatures from the configured number of signers; this verification is performed by the smart contract itself, not by any external system. Whether the wallet is deployed to Ethereum, Polygon, Arbitrum, or Optimism, the ECDSA signature verification and threshold logic are identical.

The practical security implications differ based on network-specific factors. On Ethereum mainnet, the highest validator count and proof-of-stake security model provide strong assurance that approved transactions will be included in the final canonical blockchain. On Arbitrum or Optimism, the optimistic rollup design means there is a window of time before mainnet settlement where a transaction could theoretically be reverted through a successful fraud proof. For most operations, this theoretical risk is not material, but treasuries that require absolute finality should understand the difference.

Key management practices should remain consistent regardless of which EVM-compatible network a multisignature wallet is deployed to. Signer keys should be stored in hardware wallets or otherwise protected from direct exposure to internet-connected devices. Multi-sig signers should authenticate using wallet-based methods rather than passwords; Safe Wallet login uses Web3 wallet authentication, which means signers connect their hardware wallet or browser wallet to sign transactions, and the wallet address is verified on-chain. This approach prevents password compromise, account takeover, and phishing attacks that target authentication credentials.

One distinction is that each network has its own signer set. A 3-of-5 multisignature wallet on Arbitrum has five specific signer addresses on Arbitrum. If you want the same five individuals to also control a wallet on Polygon, you would deploy a separate multisig wallet on Polygon with the same configuration. The wallets are not linked; they are independently deployed instances with identical governance models. This means an organization can maintain separate multisig wallets on different networks while keeping the same team as signers.

Future roadmap and emerging EVM-compatible networks

The EVM ecosystem continues to expand as new Layer 2 solutions and sidechains launch. Base, built on Coinbase’s infrastructure, is an EVM-compatible optimistic rollup that can host Safe multisig wallets with identical functionality. zkSync and StarkNet are building alternative VM environments with different approaches to scaling, though not all are EVM-compatible in the strict sense. For organizations evaluating which networks to deploy multisig infrastructure on, the key consideration is whether the target network has sufficient liquidity, active developer ecosystem, and long-term commitment from the team operating it.

The practical approach for most treasuries is to use a Safe multisig wallet on the networks where significant operational activity already exists. If a DAO’s community primarily uses Arbitrum DeFi protocols, deploying a multisig wallet on Arbitrum makes sense. If governance activities and fund management occur across multiple EVM-compatible networks, maintaining separate multisig wallets on each network—with consistent signer sets—provides security and cost optimization without creating operational confusion.

The longer-term trend in EVM-compatible networks is toward interoperability rather than fragmentation. Better cross-chain bridges, standardized token wrapping, and improved liquidity infrastructure will make managing treasuries across multiple networks more seamless. However, the multisignature wallet deployment model will likely remain the same: Smart contract-based multisigs deployed independently on each network, with teams using bridges to move funds between them as needed. This approach has proven robust across dozens of EVM-compatible networks and is likely to remain the standard for institutional-grade treasury management.