How to Structure a Crypto Fund Without Triggering Custody Regulation

Custody regulation for digital assets is one of the most jurisdiction-specific and rapidly evolving areas of the regulatory landscape. For fund managers, the relevant question is not whether custody regulation exists but which specific rules apply to their fund structure, their jurisdiction of operation, and the way in which they hold client assets. Getting this analysis wrong at launch has consequences that compound over time as assets grow and investor scrutiny intensifies.

"Custody regulation for crypto funds is not a single framework. It is an overlapping set of rules that depends on the manager's jurisdiction, the fund's domicile, the nature of the assets held, and how the custody arrangement is structured. The managers who get into trouble are those who assume the answer without doing the analysis, or who structure for the appearance of compliance rather than its substance." David Lloyd, Chief Executive Officer of CV5 Capital

The Regulatory Landscape: What Is Actually in Scope

Custody regulation for fund managers operates at multiple levels simultaneously. At the fund domicile level, the rules governing how the fund holds its assets are set by the jurisdiction in which the fund is registered. For a Cayman-domiciled fund, CIMA's supervisory expectations around asset safekeeping apply. At the investment manager level, the rules governing whether the manager is required to use a qualified custodian, and what form that custodian must take, depend on the jurisdiction in which the manager is regulated. At the investor level, certain investor categories in certain jurisdictions impose their own requirements on the custody arrangements of the funds they invest in, regardless of the fund's own regulatory framework.

The most significant custody regulation affecting US-adjacent digital asset fund managers is the Securities and Exchange Commission's Investment Adviser Custody Rule under the Investment Advisers Act of 1940. This rule requires registered investment advisers to maintain client assets with a qualified custodian. The definition of qualified custodian and its application to digital assets has been the subject of ongoing regulatory development, with the SEC's proposed amendments to the custody rule specifically addressing digital assets. Managers with any US regulatory connection should seek specific US securities law advice on the custody implications of their activities before finalising their fund structure.

The Cayman Framework: What CIMA Expects

Under the Private Funds Act (as amended), CIMA-registered private funds are subject to a set of operational requirements that include asset safekeeping obligations. The Act requires private funds to appoint a person to carry out the fund's custody function. This obligation is not identical to the US qualified custodian requirement and does not prescribe a specific form of custodian in all cases. The custody function under the Cayman framework may be performed by an independent third-party custodian, by the fund administrator in certain circumstances where assets are capable of registration, or through alternative arrangements that must satisfy CIMA's supervisory expectations.

In practice, for a digital asset fund seeking institutional capital, the theoretical flexibility of the Cayman custody framework is less important than the practical expectation of institutional allocators, which requires institutional third-party custody regardless of what the regulatory minimum technically permits. A fund that structures its custody arrangements to the minimum required by the Private Funds Act, rather than to the standard expected by institutional investors, will satisfy CIMA while failing ODD. The relevant standard is therefore the institutional one, and the Cayman framework is designed to accommodate it fully.

Structuring to Avoid Common Custody Regulation Pitfalls

Pitfall One: Manager-Controlled Wallets Characterised as Custody

Where a manager holds private keys to fund wallets and characterises this arrangement as a form of self-custody that satisfies the fund's custodial obligations, the arrangement is likely to be inadequate both under CIMA's supervisory expectations and under any institutional ODD framework. The Cayman custody requirement contemplates a genuine safekeeping function performed by an entity that is operationally independent of the investment manager. A manager who controls the private keys is not performing a custody function. They are holding client assets in an arrangement that exposes those assets to the manager's own operational and integrity risk without any independent safeguard.

Pitfall Two: Exchange Accounts Characterised as Custodial Holdings

Assets held in exchange accounts are not held in custody. They represent an unsecured claim against the exchange. A fund that relies on exchange account balances as its primary asset safekeeping arrangement has not satisfied any meaningful interpretation of the custody requirement, whether under Cayman law, US regulation, or the expectations of institutional investors. Exchange holdings are a trading exposure that must be managed within a documented counterparty risk framework, with the fund's primary asset safekeeping maintained at an independent institutional custodian.

Pitfall Three: Confusing the Custody Function with the Administrator Function

The fund administrator and the fund custodian are distinct roles with distinct functions. The administrator calculates NAV, maintains the investor register, and processes subscriptions and redemptions. The custodian holds the fund's assets and provides independent position confirmation to the administrator. Combining these functions in a single entity, or assigning the custody function to a party that also performs administration, compromises the independence of NAV calculation and creates a governance gap that CIMA supervisory standards and institutional ODD requirements will both identify.

Managers launching on the CV5 Capital digital asset fund platform benefit from pre-established institutional custody relationships that have been structured to satisfy both CIMA's supervisory expectations and the institutional ODD standard. The detailed analysis of custody model options and their implications for investor protection is covered in the CV5 Capital custody analysis for digital asset funds.

Key Takeaways

• Custody regulation for digital asset funds operates at multiple levels: the fund domicile, the investment manager's jurisdiction, and the investor's own requirements. Each level must be assessed separately.
• The Cayman Private Funds Act imposes a custody function requirement on CIMA-registered private funds. The practical standard for institutional funds goes beyond the regulatory minimum to require independent institutional third-party custody.
• Manager-controlled wallets, exchange account balances, and combined administrator/custodian arrangements are the three most common custody structure failures in digital asset funds and are inadequate under both regulatory and institutional standards.
• The administrator and custodian must be separate entities. The administrator must source position data from the custodian independently of the manager to maintain NAV integrity.
• US-connected managers must obtain specific advice on the SEC custody rule and its application to digital assets before finalising their fund structure and custody arrangements.