The Bitcoin ETF trade sold investors a simple promise: crypto exposure inside a wrapper that looked and felt like mainstream finance. Advisors could buy it, compliance teams could understand it, and institutions could route capital into digital assets through a product that fits the rest of their strategy.
That promise worked, and the US spot Bitcoin ETF complex had reached $91.71 billion in assets under management by April 8, according to CryptoSlate data.
Given the size of the spot Bitcoin ETF market, we can clearly see that there’s no lack of demand. The main problem the industry is faced with now is infrastructure.
On April 20, Grayscale amended its proposed Hyperliquid ETF filing and named Anchorage Digital Bank as custodian in place of Coinbase.
On its own, that looks like a modest filing change tied to a newer crypto product, but in context, it’s a sign that issuers are starting to think harder about how much of the regulated crypto ETF market still runs through one back-office gatekeeper.
As CryptoSlate reported on April 12, funds whose launch documents name Coinbase as custodian or primary custodian account for about $77.10 billion of the market, or 84.1% of total US spot Bitcoin ETF AUM. A stricter method that excludes multi-custodian arrangements or unclear split allocations still leaves roughly $74.06 billion, or 80.8%, tied to Coinbase in some custody role. Those numbers make custody concentration part of the institutional appetite for Bitcoin, not a side detail buried in the documents.
A single filing doesn’t establish a migration trend, and the market shouldn’t turn one amendment into a sweeping break. Even so, custody choices inside ETFs carry real informational value because issuers, lawyers, and boards tend to repeat the safest available template. When a market that has spent years making the same custody decision starts to show variation, it’s worth paying attention.
The ETF boom built a custody market around one default choice: Coinbase
Coinbase became dominant in crypto ETF custody for practical reasons that made sense from the start.
When spot Bitcoin ETFs won approval in January 2024, issuers needed a provider with a recognizable compliance profile, institutional operating history, and an infrastructure stack that already looked credible to boards, auditors, market makers, and regulators. Coinbase had that advantage. Once the largest issuers chose it, the rest of the market inherited a strong template effect.
That pattern kept extending into 2026. Morgan Stanley’s updated filing in March named Coinbase Custody and BNY as custodians for its proposed Bitcoin exchange-traded product, which later launched as the Morgan Stanley Bitcoin Trust.
Another blue-chip institution entered the market and plugged into the same custody backbone already supporting much of the ETF complex. That’s how concentration deepens in financial infrastructure, with each new entrant reinforcing the same operational standard.
Coinbase’s own regulatory trajectory has only strengthened that position. On April 2, the company said it had received conditional approval from the Office of the Comptroller of the Currency to charter Coinbase National Trust Company. That was an important milestone, because a federal trust framework offers a cleaner supervisory map for the custody business that sits underneath products like ETFs.
Coinbase’s scale reflects institutional trust, launch readiness, and regulatory familiarity. Those strengths are also what made it the market’s central operational node. Crypto has spent years arguing about decentralization at the asset layer, while the institutional wrapper built around Bitcoin moved toward a highly concentrated custody structure. We can now clearly see that product variety expanded faster than infrastructure variety.
ETF investors spend most of their time looking at inflows, fees, and price action, though it’s custody that shapes how the system functions day to day. If the wrapper is supposed to make digital assets legible to mainstream finance, then the resilience of that wrapper matters almost as much as the underlying asset. The live question now is whether the market has reached the point where resilience requires more redundancy.
Grayscale’s Anchorage switch points to a market thinking harder about redundancy
Grayscale’s amended Hyperliquid ETF proposal names Anchorage Digital Bank as custodian in place of Coinbase. Anchorage brings a different regulatory and institutional profile to crypto custody. It’s the first federally chartered crypto-native bank in the United States, and it’s already been moving deeper into the institutional stack. Grayscale had previously tapped Anchorage as a secondary custodian for part of its Bitcoin and Ethereum trusts, while BlackRock added Anchorage in April 2025 to support its spot crypto ETFs.
That makes the Grayscale amendment look like part of a slow broadening in the custody field. The important point is that issuers now have stronger reasons to add alternatives into the mix as the category grows larger and the cost of concentration becomes easier to quantify. A market carrying more than $90 billion in spot Bitcoin ETF assets starts to look different when more than four-fifths of that exposure still depends on one custody provider in some form.
The biggest risks are in operations, reputation, and market-wide spillover.
ETF assets are segregated, custody agreements impose fiduciary duties, and the legal structure around these funds differs sharply from the exchange failures and balance-sheet collapses that shaped crypto’s earlier crises.
That architecture is important, but so is the fact that a dominant provider can still become a choke point if it faces outages, settlement disruption, licensing complications, or regulatory pressure. The larger Coinbase’s role becomes, the larger the consequences become for any event that interrupts its ability to perform that role across multiple issuers at once.
Markets mature by building backups, widening their vendor maps, and reducing the number of points where one institution’s disruption can spill across an entire category. Crypto ETFs have already done the first part of institutionalization by attracting demand and embedding themselves in mainstream portfolios.
The next part is about whether the system underneath those products can carry that growth without leaning so heavily on a single provider, even when that provider remains strong and increasingly well connected to regulators.
Hyperliquid is a newer and more politically sensitive product than a plain spot Bitcoin ETF, and its core perpetuals venue remains ring-fenced in the US.
That alone may have given Grayscale an extra reason to lean on a federally chartered custodian. Even if that turns out to be the narrow explanation, the choice still reveals something important: when issuers encounter a product with more regulatory edge, they may see value in bringing a different type of custodian into the structure. And once that habit enters the market, broader diversification becomes easier to imagine.
That is why this launch belongs in the bigger conversation around Coinbase, Anchorage, and the institutional path of Bitcoin ETFs. The category no longer needs to prove that investors want regulated crypto exposure. It needs to show that the infrastructure underneath that exposure can evolve beyond the first template that worked.
Wall Street’s relationship with crypto keeps moving through familiar stages. First came access, then came legitimacy, and the next stage is resilience. Grayscale’s switch to Anchorage doesn’t settle that transition, but
it does make the direction easier to see. The ETF boom made Bitcoin legible to traditional finance. What comes next will determine how durable that wrapper looks at scale.