Crypto Inheritance Without a Lawyer: What a Dead Man's Switch Can and Can't Do

This article is general information, not legal or financial advice. Inheritance law varies by jurisdiction. For anything involving significant assets, involve a professional.

Self-custodied crypto has an inheritance problem that traditional assets don't: the thing your heirs need isn't in any institution's records. A bank account surfaces during probate whether or not anyone knew about it. A seed phrase doesn't surface anywhere. If the knowledge dies with you, the assets are gone. Not tied up, not delayed. Gone.

So it's natural that people reach for a dead man's switch: a service that notices you've stopped checking in and releases something to people you chose. It's a genuinely useful tool for this problem. It is also routinely oversold, and the failure modes are unforgiving. Here's both halves.

What a dead man's switch does well

A dead man's switch solves the delivery problem: getting the right information to the right people at roughly the right time, without you being there to hand it over, and without giving anyone access while you're alive. Concretely, it's well suited to delivering:

• The map, not the treasure. Where your wallets exist, which are hot and cold, what hardware is involved and where it physically lives, and what your heirs should absolutely not do, such as typing a seed phrase into a website.
• Instructions for non-technical heirs. The step by step: which family member or advisor to involve, how to move assets safely, what a hardware wallet even is.
• One share of a split secret. The strongest pattern is to never store the seed phrase anywhere whole. Split it, using Shamir's secret sharing or a passphrase-protected wallet where the phrase and passphrase travel separately, so the switch's release is necessary but not sufficient. An heir combines it with a share held elsewhere.

Two properties matter when evaluating any service for this. Releases should go through staged escalation, meaning the service tries to reach you multiple ways and then notifies trusted contacts in order, rather than firing on a single silent timer. And you should know exactly who can read the payload, because that determines how much of the secret you can safely put in it. Delivery you can't verify will actually happen is not a plan.

What it can't do, and where people get hurt

It can't replace a will. A switch delivers information. It doesn't transfer ownership. Your jurisdiction's inheritance law decides who is entitled to the assets, switch or no switch. If the switch hands your seed phrase to someone who isn't the legal heir, you've created a family dispute with an irreversible head start. The switch is the delivery layer under an estate plan, and here's how the pieces divide.

Never put a whole key anywhere you don't control, including a switch service. If the payload is a complete plaintext seed phrase, then the service, or anyone who compromises it, controls your funds. This is why the split-secret pattern above is the design that matters. It stays safe even if the service is fully compromised, and it does not require you to take any vendor's security claims on faith.

False triggers are the characteristic failure. Hospital stays, long off-grid travel, or plain forgetfulness can look identical to death. A single-timer switch fires. A well-designed one escalates first. Configure check-in windows generously and make sure release requires more than one missed ping.

On-chain alternatives have their own sharp edges. Timelocked spending paths (Bitcoin's CLTV) and pre-signed transactions get proposed often, and technical guides cover them well, but they must be re-set on a schedule forever, they break silently if you move funds, and a mistake is unrecoverable by design. Estate lawyers who work in crypto tend to recommend multisig arrangements with professional or family co-signers for large holdings. They're right for that tier. The delivery-layer switch remains valuable alongside those structures, because someone still has to tell your heirs the multisig exists.

A sane minimal setup

1. Write the heir-facing instructions document, the map. Assume zero technical knowledge.
2. Split the secret material so no single location, including your switch, holds it whole.
3. Put the instructions and one share behind a dead man's switch with staged trusted-contact escalation.
4. Tell your legal will's executor that the arrangement exists, but not the contents.
5. Test the check-in rhythm for a month before you rely on it, and calendar a yearly review, because holdings move and people change.

Step 2 is the one people skip, and it's the one that makes the rest safe. It means you never have to trust any single service, ours included, with enough material to move your funds.

That delivery problem is what Aegis DMS is built around, with check-in monitoring and staged trusted-contact cascades rather than a naked timer. Stored details are encrypted at rest, and on the hosted service the release is server-managed, which is exactly why the split-secret pattern belongs in your design rather than a promise from us. Ask the same questions of any alternative. The passwords-and-accounts guide covers the non-crypto half of the same problem.

The one-line summary: a dead man's switch is how your heirs find out. It should never be the only thing standing between them and the assets, or the only copy of the key.