Self custody means nobody else can access your crypto, including your family. Without a recovery plan those funds are permanently lost when you are. Workable approaches include sealed instructions held by an attorney, a multisig wallet where a trusted person holds one key, split backups requiring several parties, and dedicated inheritance services with time locked release.
The problem stated plainly
Self custody works by making sure nobody but you can access your funds. That property does not switch off when you die or become incapacitated.
A meaningful portion of all lost crypto is lost this way. Not to hackers, not to exchanges, but to people whose families had no idea what to look for or how to use it.
Four approaches that work
Sealed instructions with an attorney
A sealed envelope held by your estate attorney describing where the backup is and how to use it, without containing the phrase itself. Simple, legally familiar, and dependent on the attorney and the hiding place.
Multisig with a trusted party
A Safe configured 2 of 3, with keys held by you, a trusted person and a lawyer. Nobody can act alone, and two together can recover. Strong, and it requires the others to understand their role.
Shamir split backup
The seed is split into shares where any two of three reconstruct it. Distribute among trusted parties. Trezor supports this natively, and it is more robust than naively splitting words.
Time locked release
Dedicated services release access to a nominated party if you do not check in for a defined period. Convenient, and it introduces a third party you have to trust.
Write the letter
Whatever mechanism you choose, someone needs a document that assumes no crypto knowledge. It should cover:
- That crypto exists, roughly how much, and that it is real property with real value
- Where the recovery material is, described precisely enough to find
- What to do with it, in plain language, ideally naming a specific wallet app
- Who to ask for help, a named person who understands this and is willing to assist
- What not to do, especially never to type the phrase into a website or send it to anyone
What not to do
- Do not put the seed phrase in your will. Wills become public documents in probate.
- Do not rely on one person remembering a conversation. Write it down.
- Do not use a scheme so complex nobody can execute it. A plan that fails under stress is not a plan.
- Do not skip testing. Walk a trusted person through the process while you are here to answer questions.
Incapacity, not just death
Most planning focuses on death, and incapacity is more likely and legally messier. A power of attorney does not help if nobody can find the keys.
Whatever you build should work for a situation where you are alive and unable to participate. That usually means the mechanism cannot depend on you doing anything at the time.
Common questions
Can I just put my seed phrase in my will?
No. Wills go through probate and frequently become public record. Reference the location of instructions instead, and keep the phrase itself out of the document.
Are crypto inheritance services safe?
They introduce a third party you have to trust, which is exactly what self custody was meant to avoid. Some are well designed. Understand the mechanism and what happens if the company disappears.
How much complexity is appropriate?
Match it to the amount. For a modest holding, sealed instructions with an attorney are enough. For significant wealth, multisig with professional involvement is worth the overhead.
Should I tell my family how much I hold?
They need to know it exists and that it matters. The exact amount is your call, and knowing the rough scale helps them take the recovery process seriously.
Where to go next
Get a second pair of eyes on your setup
A security session reviews what you hold, where it sits, what approvals are open and what would happen if your laptop were compromised tomorrow. Most people find at least one thing worth fixing.