Onramp vs Unchained: Which Bitcoin Custody Model Is Right for You?

Onramp and Unchained will both appear on the list for anyone evaluating serious, Bitcoin-only custody. They are two of the most prominent providers in the institutional-grade space, both use multisignature technology, and both serve high-net-worth individuals, family offices, and long-term holders with Bitcoin IRAs, loans, and estate planning. But they are built on different philosophies about who should hold the keys, and Onramp has grown well beyond custody into a comprehensive Bitcoin financial platform. Onramp is structured across three tiers, built on a Multi-Institution Custody foundation it has operated since 2023, spanning a free Finance account with brokerage, an earn account, the Onramp Card, Bitcoin-backed loans through Arch Lending, and the Onramp Terminal, scaling to Multi-Institution Custody, an included Bitcoin IRA, and integrated inheritance at Onramp Core. Here is an honest comparison of how each model works, what it costs, and how each handles the question that matters most, which is what happens to your Bitcoin if something happens to you.

Nothing here is financial or legal advice. Product details reflect publicly available information as of mid-2026 and are subject to change. Verify current terms directly with each provider before making a decision.

Key Takeaways:

• Unchained and Onramp both use multisignature Bitcoin custody, but the client's relationship to the keys is fundamentally different, and that difference drives most of the practical distinctions between them.
• Unchained is collaborative custody: in a standard 2-of-3 vault, the client holds keys on their own hardware and Unchained holds a key, so the client can move Bitcoin independently. It is a legitimate, self-custody-adjacent model that gives the client maximal sovereignty and direct key control, at the cost of storing and managing hardware devices. Unchained also offers a Bitcoin IRA, loans, and a trading desk within that framework.
• Onramp is a comprehensive Bitcoin-only financial platform built custody-first. Its Multi-Institution Custody model, live since 2023, has three independent regulated institutions each hold one key in a 2-of-3 architecture, working at the client's direction, so no single institution can move client Bitcoin without the client's direction. The client holds no key, which removes the hardware-management burden.
• Onramp runs across three tiers. The free Finance tier ($0/month) includes brokerage at 0.85%, an earn account paying Onramp-funded rewards, the Onramp Card, Bitcoin-backed loans through Arch Lending, and the Onramp Terminal. Core ($250/month) adds Multi-Institution Custody, an included Bitcoin IRA, and integrated inheritance. Private (0.04% of AUM per month) adds a dedicated account manager and a Virtual Family Office. Clients start on Finance and upgrade as their position grows.
• The custody difference matters most at inheritance. Because Unchained clients hold keys, heirs face a technical recovery. Onramp Core includes a built-in beneficiary designation and a guided handoff with no seed phrases or hardware for the heir.
• Neither model is universally better. The right choice depends on how much operational responsibility you want to carry, and how you want your Bitcoin handled if something happens to you.

The Core Philosophical Difference

Unchained was built on the conviction that Bitcoin holders should control their own keys, and its collaborative custody model reflects that belief directly. In a standard Unchained vault, the client holds keys on their own hardware and Unchained holds a key. The client can move Bitcoin independently using their own keys, without Unchained's involvement, and Unchained's key exists as a collaborative backup. This is meaningfully different from leaving Bitcoin on an exchange. It is genuine key control, and it is best understood as self-custody with a safety net. The operational responsibility of managing hardware devices stored in separate locations, wallet configuration files, and recovery information sits with the client. That is the tradeoff the model is designed around, and for the right holder it is a feature, not a flaw.

Onramp was built on a different premise: that for many serious Bitcoin holders, the operational burden of holding keys creates more risk than it eliminates, especially as holdings grow. Onramp built custody-first, launching its Multi-Institution Custody model in 2023, and later added a full financial services suite on top of it. In Multi-Institution Custody, three independent regulated institutions, Onramp, BitGo Trust, and CoinCover, each hold one key in a 2-of-3 architecture. The client does not hold a key. Instead, the client retains control through explicit authorization and legal title to the account. Transactions are initiated from the client's Onramp account, and two of three independent institutions work at the client's direction to sign. No single institution, including Onramp, can move client Bitcoin without the client's direction.

Neither premise is wrong. They reflect genuinely different views about where risk is best managed, in the hands of a disciplined individual holding their own hardware, or distributed across independent institutions with professional security infrastructure. Both are legitimate models that serve different holders.

Unchained at a Glance

Unchained has been operating since 2016 and has built a strong reputation among technically sophisticated Bitcoin holders. Its collaborative custody model is a legitimate, self-custody-adjacent approach with real architectural strengths.

How Unchained works:

• A standard Unchained vault is a 2-of-3 multisig. The client generates keys using compatible hardware wallets such as Trezor, Ledger, or Coldcard, storing those devices and their seed phrase backups securely and separately. Unchained holds a key.
• To move Bitcoin, the client signs with their own key or keys and Unchained cosigns. If a client loses a key, Unchained can help recover access using its key and the client's remaining key.
• If Unchained were to disappear as a company, the client could still access their Bitcoin using their own keys and open source tools like Caravan or Sparrow, without any involvement from Unchained. This is a genuine and meaningful strength of the collaborative custody model.
• Vault access is $250 per year, with the first year free. Trading through Unchained's desk starts at 1.0% for transactions up to $100,000 and scales down at higher volumes.
• Unchained also offers a Bitcoin IRA and loans within its collaborative custody framework, plus concierge onboarding, so clients can hold retirement assets or borrow against Bitcoin while still holding their own keys.
• Unchained's Inheritance Protocol is available as an add-on and involves documenting key locations and recovery instructions for heirs.
• Unchained is currently US-only.

For holders who want direct key control on their own hardware and the ability to move Bitcoin independently of any third party, Unchained is a strong, credible choice. The tradeoffs to weigh are the operational responsibility of managing hardware and the technical recovery your heirs would face.

Onramp at a Glance

Onramp is a comprehensive Bitcoin financial platform structured across three tiers, all built on a Multi-Institution Custody foundation Onramp has operated since 2023. Clients enter through a free Finance account, and the platform scales as their Bitcoin position grows.

The free entry point: Onramp Finance ($0/month). The Finance tier is free forever and consolidates the core of a Bitcoin financial life on one platform:

• Bitcoin brokerage at 0.85% on one-time buys in all 50 US states, with zero-fee recurring buys for dollar-cost-averaging. Brokerage is also available internationally in many countries.
• An earn account paying up to 3% in Onramp-funded rewards. These are rewards funded by Onramp, not interest or yield on deposits, with eligibility tied to completing at least one bitcoin trade per month. Earn rewards are not currently available to clients in New York, though a Finance account can still be opened there.
• The Onramp Card, a Visa debit card with 0.5% cash-back paid in dollars and convertible to Bitcoin, accepted anywhere Visa is accepted.
• Bitcoin-backed loans through Arch Lending, covered in detail below.
• Custody at BitGo Trust, a regulated qualified custodian under South Dakota and New York trust banking law and one of the most established Bitcoin custodians in the United States, with Lloyd's of London insurance.
• The Onramp Terminal, a Bitcoin-only research and data platform, included free with every account at every tier.
• Direct human client service.
• A Bitcoin IRA available as a $100/month add-on at the Finance tier, custodied at BitGo Trust.

The custody upgrade: Onramp Core ($250/month). Core layers Multi-Institution Custody (MIC) on top of everything in Finance. Three independent regulated institutions (Onramp, BitGo Trust, and CoinCover) each hold one key in a 2-of-3 architecture. Transactions are initiated from the client's Onramp account, and two of three institutions work at the client's direction to execute. No single institution, including Onramp, can move client Bitcoin without the client's direction. Core also includes a Bitcoin IRA held inside the Multi-Institution Custody vault at no additional cost, integrated inheritance planning with a built-in beneficiary designation, Lloyd's of London coverage up to $100 million per incident, Guardian Plus security services, real-time Proof of Reserves at the individual vault level, brokerage at 0.65%, earn rewards up to 4%, and 1% Bitcoin cash-back on the Onramp Card.

The top tier: Onramp Private (0.04% of AUM per month). Private adds a dedicated account manager, reduced trading fees, a Virtual Family Office for estate and dynasty trust planning, brokerage at 0.32%, earn rewards up to 5%, and 1.5% Bitcoin cash-back.

The through-line. Clients typically start on Finance and upgrade to Core when their Bitcoin position grows to the point where Multi-Institution Custody, an included IRA, integrated inheritance, and the higher-coverage Lloyd's policy matter more. The custody model itself is unchanged from what Onramp launched in 2023. What has grown around it is the broader platform.

How the Two Custody Models Work in Practice

The clearest way to see the distinction is to follow a transaction and a lost key through each model.

With Unchained, the client holds keys on their own hardware. Moving Bitcoin means signing with the client's own device and having Unchained cosign, and the client can also move funds independently of Unchained using their own keys. Losing a device is recoverable because Unchained's key plus a remaining client key can restore access. The client owns the process end to end, which is the source of both the sovereignty and the responsibility.

With Onramp Core, the client holds no key. Transactions are initiated from the client's Onramp account and authorized through verification with two independent institutions working at the client's direction. This adds a modest processing window, typically 24 to 48 hours for standard withdrawals, with same-day handling available for urgent situations. Real-time, individual-vault Proof of Reserves lets the client confirm their Bitcoin is where it should be, and vaults are segregated, client-titled, off Onramp's balance sheet, and bankruptcy-remote. There is no hardware for the client to lose, and no single compromised credential or institution can move the Bitcoin.

The distinction is not that one model is secure and the other is not. Both are secure. The distinction is where the operational responsibility sits: with the individual holding hardware in the Unchained model, or distributed across independent institutions in the Onramp model.

The Onramp Platform Beyond Custody

Where Unchained is focused on collaborative custody and the services that surround it, Onramp has built a full Bitcoin financial platform, and most clients start at the free entry tier and grow into Multi-Institution Custody as their position and planning needs develop.

Brokerage and recurring buys. Onramp includes Bitcoin brokerage at 0.85% on one-time buys in all 50 states, with zero-fee recurring buys for dollar-cost-averaging, and one-time brokerage drops to 0.65% at Core and 0.32% at Private.

The earn account and the Onramp Card. The earn account pays up to 3% in Onramp-funded rewards at Finance, scaling to 4% at Core and 5% at Private. These are rewards funded by Onramp, not interest or yield on deposits, with eligibility tied to completing at least one bitcoin trade per month. The Onramp Card pays 0.5% cash-back at Finance, scaling to 1% at Core and 1.5% at Private, paid in dollars and convertible to Bitcoin in one click. These are ongoing accumulation surfaces that grow a Bitcoin position over time.

Bitcoin-backed loans. Onramp's Bitcoin-backed loans run through Arch Lending. Arch is the lender, and Arch holds the Bitcoin collateral with Anchorage, a regulated qualified custodian, for the life of the loan. That collateral sits outside Multi-Institution Custody. Loans use Bitcoin-only collateral up to 50% loan-to-value, with fixed rates, no rehypothecation, and an optional deferred interest structure where interest is paid at the end of the loan rather than monthly, so holders can access dollar liquidity without selling Bitcoin and triggering a taxable event. Unchained also offers loans within its collaborative custody framework, so both platforms let holders borrow against Bitcoin.

Research and data. Onramp includes the Onramp Terminal at no additional cost at every tier, including free Finance: a Bitcoin-only research and data platform with thousands of interactive charts covering on-chain metrics, macro overlays, miner economics, ETF flows, and derivatives positioning. For holders who track Bitcoin actively, the Terminal replaces a separate paid data subscription.

The thesis. Onramp is built around a specific framing: dollars in the platform are working capital, and Bitcoin in custody is savings. The earn account, the Onramp Card, and Arch loans are all tools that help clients accumulate more Bitcoin, and the tier structure lets a holder start free and scale into institutional-grade custody as the position warrants.

Where the Difference Matters Most: Inheritance

The philosophical gap between these two models becomes most consequential when you consider what happens to your Bitcoin if you die or become incapacitated.

With Unchained, because the client holds keys, heirs face the same challenge any self-custody heir faces. They need to locate the hardware devices, know or find the PINs, understand how multisignature wallets work, execute a recovery process using open source tools, and establish legal title to the assets through the estate separately. Unchained's Inheritance Protocol helps document this process in advance, which is meaningfully better than nothing, but the technical burden on heirs remains real. If a family member without Bitcoin knowledge is the heir, this process is not straightforward. There is also no beneficiary designation in the collaborative custody model, so heirs will generally need to go through the estate and establish legal authority before they can act, which can take months.

With Onramp, inheritance is handled differently at a structural level. A beneficiary designation is built into the account setup at Core. When a client names a beneficiary, the heir presents a death certificate and identification, and the Onramp team guides them through the transfer. The Multi-Institution Custody architecture operates in the background, and there are no seed phrases or hardware wallets for the heir to learn. From the heir's perspective, the experience is a guided, supported handoff rather than a technical recovery exercise.

For many Bitcoin holders, this is the deciding factor. The question is not only which model is more secure in the abstract. It is which model your family can actually navigate if something happens to you.

Honest Tradeoffs for Each Model

Where Unchained has a genuine advantage:

• Sovereignty and direct key control. Because the client holds keys, they can move Bitcoin independently, and if Unchained disappears, the client can still access their Bitcoin using open source tools. This is a real architectural strength.
• Independent verification. The client can verify their keys and vault configuration independently using open source tools, without relying on a provider's reporting.
• Cost at lower AUM. At $250 per year for vault access, Unchained is meaningfully cheaper than Onramp Core for holders who are not yet at a scale where the pricing difference is small relative to the asset value.
• Track record. Unchained has operated since 2016 with a strong reputation among technically sophisticated holders.

Where Onramp has a genuine advantage:

• No key-management burden. The client does not manage hardware devices, seed phrases, or wallet configuration files, which removes an entire category of self-inflicted loss risk that grows more consequential as holdings increase.
• Complete financial platform. Brokerage, an earn account paying Onramp-funded rewards, the Onramp Card, Bitcoin-backed loans through Arch Lending, a Bitcoin IRA, inheritance planning, and the Onramp Terminal all sit under one roof, and clients can start on the free Finance tier and upgrade to Multi-Institution Custody at Core as their position grows.
• Bitcoin IRA with MIC custody. At Core and Private, the Bitcoin IRA is held inside the Multi-Institution Custody vault at no additional cost, combining tax-advantaged retirement holdings with distributed custody.
• Inheritance simplicity. The beneficiary designation and guided heir process removes the technical burden from the family entirely.
• Insurance. Lloyd's of London coverage up to $100 million per incident at Core provides a meaningful backstop.
• No single point of failure. Because three independent institutions each hold one key, a breach, failure, or bad actor at any single institution cannot move client Bitcoin. This is the core security thesis of Multi-Institution Custody.
• International availability. Onramp serves clients outside the United States. Unchained is currently US-only.

When to Choose Each

Unchained is likely the better fit if you are comfortable managing hardware wallets and understand multisignature recovery, if direct key control and the ability to move Bitcoin independently of any third party are primary values, if your heirs are technically capable or you are willing to invest in documenting and rehearsing recovery with them, or if you are at an earlier stage of accumulation where the cost difference is meaningful relative to your holdings.

Onramp is likely the better fit if you want institutional-grade security without personally holding a key, if inheritance planning is a priority and you want your heirs to face a supported, documented handoff rather than a technical recovery, if your holdings are large enough that eliminating self-inflicted risk is worth the cost of institutional custody, or if you or your heirs are not deeply technical and want a team that actively assists with the handoff. Onramp is also the fit if you want to start free on the Finance tier and grow into Multi-Institution Custody, consolidating brokerage, an earn account, the Onramp Card, Bitcoin-backed loans, an IRA, and research on one platform rather than assembling them from several providers, or if you need coverage for accounts or beneficiaries outside the US.

A Note on the Self-Custody Spectrum

One framing helps clarify the decision. Collaborative custody and self-custody sit on the same end of the custody spectrum. The distinction between holding all keys yourself and holding keys with a collaborative backup is meaningful at the margin, but both models place the primary operational and inheritance responsibility on the individual holder, and both are legitimate expressions of Bitcoin sovereignty.

Multi-Institution Custody sits in a different category. It is not a variation of self-custody with better tooling. It is a different model, one where the institutional layer absorbs the operational complexity rather than the individual. Onramp additionally wraps that custody foundation in a comprehensive tier platform, from the free Finance brokerage, earn account, and Card up to Core and Private. Both approaches are legitimate. They simply ask different things of you and hand different things to your heirs.

For a deeper look at how these models compare as custody architectures, see Collaborative Custody vs Multi-Institution Custody: How to Choose, and What Is Multi-Institution Bitcoin Custody? For Onramp's broader inheritance framework, see What Happens to Your Bitcoin When You Die? A Complete Inheritance Planning Guide. If you would like to walk through which model fits your situation, our team is available at onrampbitcoin.com/consult.

Disclosures

Onramp Earn rewards are discretionary marketing incentives from Onramp's corporate revenue. Not interest, yield, or a return on your balance. Requires active platform engagement including at least one bitcoin trade per month. Rewards may change or end at any time. USDB is not FDIC insured; stablecoin risk applies. Bitcoin is volatile and may lose value. Onramp is not a bank. Past performance does not guarantee future results.