A decentralized autonomous organization with five core contributors holds grant funds in Solana—roughly 50,000 SOL designated for operational expenses over the next two years. No single person should be able to move those funds unilaterally. The organization needs a mechanism to require approval from at least three of five signers before any treasury transaction executes. Phantom Wallet, the dominant browser extension for Solana interactions, offers straightforward token management and direct access to DeFi protocols. But it is not natively a multi-signature wallet. The practical question is whether a DAO can build adequate treasury controls using Phantom’s existing architecture combined with dedicated multi-sig solutions, or whether the friction of switching between applications creates unacceptable operational risk.

That question matters because small organizations often lack the budget for enterprise blockchain infrastructure, yet they cannot tolerate the security exposure of one person holding keys or funds sitting on a centralized exchange. Phantom integrates seamlessly with Solana’s ecosystem, supporting rapid token swaps through Jupiter, staking through validators, and access to NFT marketplaces. Those strengths apply to individual trading or small-scale asset management. Treasury management introduces a different requirement: shared custody with transparent approval workflows, audit trails, and protection against both internal misuse and key compromise. Understanding what Phantom can and cannot do—and how to layer additional tools on top—is the foundation for a cost-effective multi-signature strategy.

Why Phantom alone is insufficient for shared treasury control

Phantom is designed as a personal, non-custodial wallet. Each user controls a 12-word seed phrase that generates private keys for signing transactions. When installed as a browser extension, Phantom can connect to decentralized applications, approve token swaps on Raydium or Orca, interact with staking protocols, and browse NFT marketplaces like Magic Eden. The wallet supports hardware wallet integration with Ledger and Trezor, which can reduce the risk of seed phrase exposure on an internet-connected device. Mobile versions add biometric authentication, another useful layer for individual security.

The architectural limitation is straightforward: Phantom assumes one person controls one wallet. There is no native support for requiring multiple signatures before a transaction executes, no approval workflow, and no built-in mechanism to prevent a single keyholder from moving all funds independently. A DAO that deposits 50,000 SOL into a Phantom wallet controlled by one member has solved the custody problem at an exchange—the funds are no longer held by a third party—but created an internal security problem. That person becomes a single point of failure. Illness, key loss, compromise, or bad judgment can result in total fund loss or unauthorized transfer.

Distributing the seed phrase among multiple people is not a solution. Splitting a 12-word seed phrase into pieces that must be reassembled to recreate the private key is theoretically possible but practically dangerous. Any person holding even one piece could potentially reconstruct the full phrase if other pieces become available. More importantly, once the key is reconstructed on any device, that device must sign transactions—and the approval mechanism still does not exist. The approach trades the risk of individual key loss for the risk of accidental or deliberate misuse during the signing moment.

The correct approach is to keep Phantom as a tool for day-to-day wallet interaction and DeFi participation, but layer a purpose-built multi-signature protocol on top for treasury transactions. This separation allows the DAO to use Phantom’s strengths—browser compatibility, DeFi integration, and ease of use—without relying on it to enforce approval workflows it was never designed to manage.

Understanding multi-signature wallets and how they differ from Phantom

A multi-signature wallet is a blockchain account that requires multiple private keys to authorize a transaction. The standard notation is M-of-N: M signers must approve before the transaction executes, and N is the total number of authorized signers. A 3-of-5 treasury requires any three of five members to sign. A 2-of-3 setup requires two of three. The security model is simple: no single compromised key can move funds, and no single person can act unilaterally even if their judgment is questionable.

Multi-signature accounts exist on Solana at the protocol level through programs like Squads, a multi-signature protocol specifically designed for treasury management and DAO governance. Unlike Phantom, which is a personal key-management interface, Squads (and similar protocols such as Gnosis Safe’s Solana implementation) operates as a smart contract or program that enforces the approval logic on-chain. When a signer proposes a transaction, the proposal is recorded on the blockchain. Other signers can view it, deliberate, and submit their approval. Only after the required number of signatures accumulate does the transaction execute.

That architectural difference creates several important consequences. First, every proposal and approval is permanently recorded on the blockchain, providing an immutable audit trail. A DAO can look back months later and see who proposed what, who approved it, when, and whether it executed. Second, there is a deliberation period. Proposals do not execute instantly; there is time for other signers to notice and object before the transaction becomes irreversible. Third, the approval logic is enforced by code, not by trust or convention. The system cannot be overridden by any single person, no matter how senior or trusted.

Phantom, as a personal wallet, provides none of these properties. It is an interface for signing transactions—a useful one for engaging with Solana DeFi, but not a mechanism for enforcing organizational approval workflows. The two tools serve different purposes and integrate better when kept separate than when one is forced to substitute for the other.

Solana’s multi-signature ecosystem: Squads, Gnosis, and lighter alternatives

The most practical multi-signature solution for a Solana-based DAO is Squads, which is purpose-built for the Solana blockchain and integrates seamlessly with existing Phantom wallets. A member uses Phantom to connect to Squads, and Squads reads the wallet’s public address to identify the signer. The member never enters their seed phrase or private key into Squads; instead, Phantom handles the cryptographic signing in the background. This layered architecture means each tool does what it is designed for: Phantom manages keys, and Squads manages approval workflows.

Setting up a Squads multi-signature wallet begins with creating a new vault account on the Squads protocol. The creator specifies the M-of-N configuration—for example, 3-of-5—and adds the public addresses of the five authorized signers. Phantom-connected members can then join the vault by confirming their participation. Once the required number of members have confirmed, the vault is ready to receive funds. The DAO can transfer its 50,000 SOL from a single-signature Phantom wallet into the Squads vault, and from that point forward, every withdrawal requires the configured number of approvals.

Gnosis Safe has also deployed its multi-signature solution on Solana, offering a similar workflow but with additional governance integrations useful for larger DAOs. For smaller organizations, Gnosis may introduce unnecessary complexity; Squads’ simpler interface and Solana-native design often prove sufficient. Other options include Anchor’s multi-sig framework and lighter tools like Safe (the renamed Gnosis Safe), but the core principle remains: these are separate applications that operate on top of the Solana blockchain, not features of Phantom itself.

A practical setup for a five-person DAO might use Squads with a 3-of-5 configuration. Two members control Phantom wallets with hardware wallet backups. One member uses Phantom with biometric authentication on mobile. Two others maintain Phantom wallets on desktop only. Any treasury withdrawal requires at least three of these five signers to connect to Squads, review the proposal, and approve it. If one key is compromised, the attacker can propose a transaction but cannot execute it without two additional approvals. If one signer is unavailable, four members remain, and any three can still approve.

Building the workflow: From proposal to execution

A DAO treasury managed through the combination of Phantom and Squads follows a deliberate transaction workflow. First, someone—typically a member with operational responsibility—prepares the transaction details: the destination address, the amount, the purpose, and any supporting documentation. This person then connects to the Squads interface using Phantom and creates a proposal. Squads records the proposal on-chain with a timestamp and the proposer’s address. No funds move at this stage.

In the deliberation period, other signers receive notification (through email, Discord, or internal channels) that a proposal awaits review. Each signer can examine the proposal using Squads’ interface, verify the destination, check the amount, and review any attached notes. This is a critical moment: signers should actually read the details rather than approving reflexively. If a proposal looks suspicious—an unexpected destination, an unusually large amount, or a recipient not mentioned in recent discussions—a signer can raise an objection in the DAO’s communication channel before signing.

Once at least M signers have submitted their approval through Squads, the proposal transitions to “ready for execution.” This does not happen automatically; execution is a separate step. A signer (often the proposer or a designated treasurer) then executes the proposal through Squads, which submits the transaction to the Solana blockchain. The transaction includes the accumulated signatures, and the Squads program verifies that the required threshold has been met before allowing the transfer. Only after on-chain verification does the actual fund movement occur.

The entire sequence is recorded on the blockchain. A DAO can pull a report from Squads showing every proposal, every signer’s timestamp and approval status, execution time, and transaction hash. This provides the transparent audit trail that Phantom alone cannot offer. For regulatory compliance, grant reporting, or internal accountability, this record is invaluable. It also serves a practical security purpose: if a signer notices an unauthorized proposal before execution, they can alert others or simply refuse to sign, preventing the transaction from reaching the M-of-N threshold.

Phantom’s role in the broader treasury strategy

Even in a multi-signature setup, Phantom remains essential for several reasons. First, individual signers use Phantom to store and manage their own keys. Each member’s hardware wallet integration or biometric protection is managed within Phantom, not delegated to Squads. If a member wants to ensure their signing key is never exposed to a browser or internet-connected device, they can use a Ledger connected to Phantom, and Phantom will request the Ledger to sign transactions whenever needed. Phantom handles the interface; the Ledger handles the cryptography.

Second, Phantom provides access to Solana DeFi throughout the DAO’s operational activities. If the treasury holds staked SOL earning validator rewards, a member can connect Phantom directly to a staking interface and monitor returns without touching the multi-signature vault. If the DAO decides to swap a portion of its holdings from SOL to USDC using Jupiter’s routing, a member might execute that trade from a small operational account connected via Phantom, then transfer the proceeds to the treasury through Squads when ready. The two wallets are not in competition; they serve complementary functions.

Third, Phantom’s browser extension compatibility across Chrome, Firefox, Brave, and Edge means signers can access and sign transactions from multiple devices without needing to install additional wallets or extensions. This flexibility is underrated in practice. A signer traveling, working on a different computer, or in a situation where they need to sign quickly benefits from the ability to use whatever browser they have available at that moment. Phantom’s multi-browser support translates to multi-signature accessibility.

The operational question that frequently arises is whether small amounts—reimbursements, small operational expenses, bounty payments—should go through the full multi-signature process. The answer depends on the DAO’s risk tolerance and operational overhead. Some DAOs use a two-tier structure: amounts below a threshold (e.g., under 100 SOL) can be approved and moved by a treasurer-designated account connected through Phantom alone, while amounts above that threshold require full multi-signature approval through Squads. This reduces friction for routine operations while protecting against large-scale theft or error. You can get started with Phantom by installing the extension, then layering Squads on top once the initial wallet setup is complete.

Security considerations and common pitfalls

The most dangerous mistake is treating the M-of-N approval threshold as sufficient protection while neglecting individual key security. If three of five signers have their Phantom seed phrases compromised—perhaps through phishing, malware, or careless storage—those three people can collude to drain the treasury regardless of the multi-signature requirement. The approval mechanism only protects against unauthorized external actors; it does not protect against collusion or compromise of the signers themselves.

Mitigation requires serious backup practices. Each signer should store their 12-word seed phrase in a physically secure location—ideally a safe deposit box, a metal backup, or a multi-part secret-sharing scheme. Hardware wallet integration with Ledger or Trezor is strongly recommended; it means the seed phrase never needs to be entered into any internet-connected device. Biometric authentication on mobile Phantom wallets adds another layer, but it is not a substitute for secure seed storage.

A second pitfall is using a M-of-N configuration that is too tight or too loose. A 5-of-5 requirement means any single signer can block all transactions, creating a denial-of-service vulnerability. If one member becomes unavailable—through illness, departure, or time zone complications—the treasury freezes. A 1-of-5 configuration, conversely, defeats the purpose of multi-signature entirely; it is barely better than a personal Phantom wallet. The 3-of-5 standard offers reasonable security (an attacker or two compromised members cannot act alone) while remaining operationally feasible (a signer’s absence does not paralyze the DAO).

A third pitfall is poor record-keeping of signer information. If addresses or key recovery methods are not documented, and a signer leaves the organization, there may be confusion about whether that person can still access the vault. Squads provides the definitive on-chain record, but a DAO should also maintain its own documentation: a list of current signers, their roles, their contact methods, and their backup key storage locations (not the keys themselves, only the location and access procedure). This information should be secure but accessible to a designated successor or incident-response contact.

Testing the setup before loading significant funds

Before a DAO transfers its entire treasury into a multi-signature vault, it must test the system with smaller amounts. A realistic test includes the following steps. First, create the vault in Squads with the intended M-of-N configuration. Second, have all N signers confirm their participation so the vault is fully operational. Third, transfer a test amount—perhaps 1 SOL or 100 USDC—into the vault from an external Phantom wallet or centralized exchange. Fourth, propose a withdrawal to a designated test address. Fifth, have exactly M signers approve the proposal and execute the transaction.

The purpose of this test is to verify that every signer understands the workflow, that notifications are working, that the M-of-N threshold is configured correctly, and that withdrawals execute as expected. If a signer cannot figure out how to approve a proposal, it is better to learn that with 1 SOL at stake than with 50,000. If the Squads interface behaves unexpectedly, or if Solana network congestion causes delays, those issues surface in a lower-stakes environment.

A second round of testing should involve one signer deliberately withholding approval to confirm that a proposal remains pending rather than executing. This validates that the M-of-N enforcement is actually working and that a single dissenting signature genuinely prevents execution. Many multi-signature mishaps occur because users assumed the approval logic was in place when it was actually misconfigured.

Once testing confirms that all signers understand the process and the system behaves as intended, the DAO can migrate its full treasury balance. The migration itself can be phased: transfer half the balance, wait a month, execute a few test withdrawals, then transfer the remainder once confidence is high. This reduces the risk that a fundamental misconfiguration results in loss of the entire treasury.

Comparing dedicated multi-sig solutions to rolling your own

Some DAOs consider alternative approaches: using a 2-of-2 Phantom wallet with seed phrases split among founders, using multisig through other blockchains and then bridging to Solana, or building custom approval workflows in Discord or governance tools. These approaches almost always introduce more risk than they mitigate.

A 2-of-2 arrangement where each of two people holds half a seed phrase requires both pieces to be present to recover the account. If one signer loses their half, the treasury becomes inaccessible forever. If both halves are brought together on the same device to sign a transaction, that device becomes a target. A true multi-signature protocol like Squads enforces approval logic without requiring seed fragments to be reassembled.

Bridges to other blockchains introduce additional failure modes. If a DAO holds its treasury on Ethereum using Gnosis Safe (which is more mature on Ethereum than on Solana) and then bridges SOL across chains to access Solana DeFi, the bridge itself becomes a security chokepoint. Bridge protocols have suffered major exploits. A DAO should keep its treasury on its primary blockchain whenever possible. For a Solana DAO, Squads on Solana is simpler and less risky than Ethereum multi-sig with cross-chain dependencies.

Governance tool workflows—requiring votes on proposals, integration with Discord bots, off-chain approval processes—can supplement a multi-signature setup but should never replace it. Off-chain approval is inherently weaker: it can be faked, forged, or bypassed. The actual fund movement must be protected by on-chain code, not by trust in governance processes. The most robust setup combines on-chain multi-signature enforcement (Squads) with off-chain governance and communication (DAO forums, voting, Discord) so that organizational decisions are made transparently but enforced cryptographically.

Regulatory and reporting implications

A final consideration, especially relevant for grant-funded DAOs or organizations that interact with traditional finance, is that multi-signature wallets provide superior audit trails. If a regulatory authority, grant funder, or third-party auditor asks for proof of how treasury funds were managed, a Squads-based setup provides on-chain records showing every proposal, every signer’s approval, timestamps, transaction hashes, and execution records. A personal Phantom wallet provides none of this; you must rely on off-chain documentation or memory.

This is not a minor advantage. Grant agreements often require accounting and approval documentation. Insurance, if available, may require proof of internal controls. If a DAO is ever audited or faces a dispute about whether funds were used as intended, the immutable blockchain record of multi-signature approvals is far stronger evidence than spreadsheets or emails. Organizations that take their treasury seriously should view multi-signature not as a technical luxury but as a core control mechanism aligned with basic governance principles.

The practical implication is that the friction of setting up Squads or a similar multi-signature protocol is a worthwhile investment of time and attention. Phantom excels at individual wallet management and DeFi interaction. Multi-signature solutions excel at organizational controls. Using both in concert—Phantom for day-to-day operations and signings, Squads for treasury approval and enforcement—is the pattern that balances security, usability, and operational maturity for small to medium DAOs on Solana.