How Multi-Institution Custody Solves the Inheritance Problem

How MIC Solves the Inheritance Problem

Inheritance isn't a document. It's whether someone can actually access the Bitcoin. Here's how MIC makes that work.

Bitcoin has an inheritance problem, and it's a structural one, not a paperwork one. With most Bitcoin custody setups, whether an heir can ever access the Bitcoin comes down to a single secret, a seed phrase, and a single person who understands how to use it. If that secret can't be found, or that person can't act, the Bitcoin is effectively unreachable. A will can name who should receive it, but a will can't sign a transaction. That’s the gap between inheritance on paper and inheritance in practice, and it's where most Bitcoin plans quietly fail.

Multi-Institution Custody is built to close that gap. To see how, it helps to look at the three ways traditional Bitcoin custody usually tries to handle inheritance, and why each falls short.

Why the usual approaches fall short

The seed phrase handoff. The most common plan is a seed phrase written down and stored somewhere, in a safe, split across locations, left with instructions. It depends on an heir locating the exact artifact, recognizing what it is, and knowing what to do with it, correctly, and often with no one left to ask. A single mistake or a missing copy ends the plan.

Multisig collaborative custody. More sophisticated Bitcoin custody setups use collaborative multisig: signing is split across a few keys, often with a co-signing service, so no single key is fatal. It's a real improvement over a phrase in a drawer. But when these solutions are built on multisig alone, inheritance still depends on heirs locating and safeguarding the client's keys and understanding how to coordinate a signature, and there is no structured recovery path if a key is simply lost. MIC removes that dependency a different way: because signing is distributed 2-of-3 across independent institutions and authority is recorded with them, there is no client key for an heir to locate, safeguard, or coordinate in the first place.

The single point of knowledge. The most fragile approach of all is the one that lives in a person's head, "I'm the only one who fully understands my custody setup." That plan does not survive the person, and it puts the entire burden of both the technical knowledge and the key custody on one individual.

How MIC solves it

MIC treats inheritance and continuity as part of the custody structure itself, rather than a document bolted on afterward. Three properties of the model are what actually solve the problem.

Access doesn't depend on one secret or one person. Signing is distributed 2-of-3 across independent institutions (AnchorWatch, BitGo, and CoinCorner), and there is no seed phrase for a family to find or lose. Authority to act is a matter of record with the institutions, not a hidden artifact, so recovery doesn't hinge on locating an object or on any single person being available to explain it.

Recovery runs through the institutional approval process. Because signing is distributed across the institutional key holders and authority is recorded with them, an authorized party recovers through the defined approval process when it is needed, with no seed phrase for an heir to hold and no single client key that can be lost. There is nothing for a family to locate or coordinate, which is the dependency that strands Bitcoin collaborative custody setups built on multisig alone.

Who is authorized, and how, is documented in advance. Rather than a secret, what exists is a plan: who may act, how approvals work, and how the custody relationship continues as circumstances change. That is something an heir can step into and an institution can honor, and it's what makes the Bitcoin genuinely inheritable in practice, not just on paper.

What this means for families

For heirs, the practical effect is that inheriting Bitcoin stops being a technical project undertaken at the worst possible time. There's treasure map to hunt for, no phrase to decode, no custody setup to reconstruct. The structure is already in place and the path to access is defined, so a family that doesn't understand Bitcoin doesn't have to become an expert to receive it.

What this means for fiduciaries

For estate attorneys and trustees, MIC provides a custody structure you can actually draft around and administer. The failure mode you know well, a meticulous estate plan undermined by Bitcoin sitting in a single-key wallet the client alone could sign, is removed: authority is documented, approvals are defined, and continuity doesn't depend on the client being available. It makes Bitcoin a manageable asset within an estate rather than an unpredictable one.

Inheritance for Bitcoin is ultimately one question: can the right person access it when the time comes? MIC is built so the answer is yes.

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