What Happens to Your Bitcoin When You Die?

You set up a hardware wallet. You wrote down your seed phrase. You stored it somewhere safe. You did everything right.

Then you get hit by a bus.

Your spouse knows you own bitcoin. Maybe they helped you buy the Trezor. But they have never opened a wallet app. They don't know what a seed phrase is. They don't know where you put it. They don't know the PIN to your hardware wallet. They don't know which exchange accounts you have.

What happens next is one of three things: they figure it out, they get scammed trying, or they lose it forever.

This is the part of Bitcoin that nobody talks about. Not your favorite podcast. Not the influencers. Not the exchanges. Self-custody means you are your own bank. But banks don't die. You do.

The Problem Is Bigger Than You Think

An estimated 3 to 4 million bitcoin are permanently lost. Some of that is from the early days, when bitcoin was worth pennies and people didn't bother keeping track. But a growing portion is from people who died without leaving access to their holdings.

Unlike a bank account, there is no customer support number for Bitcoin. There is no "forgot my password." There is no court order that can force the network to hand over coins. If nobody has the private key, the bitcoin is gone. Not stolen. Not frozen. Gone.

This is not a hypothetical. It has happened to real families. And the amount of bitcoin held by people with no succession plan grows every year.

Why Traditional Estate Planning Falls Short

Most estate attorneys have never handled Bitcoin. They understand bank accounts, brokerage accounts, real estate, and physical property. They know how to write a will that says "my spouse gets my Fidelity account."

But Bitcoin does not work like a Fidelity account. There is no institution holding your coins that a court order can compel to transfer them. If your bitcoin is on an exchange like River or Swan, the exchange might cooperate with an estate process. That is the easier case. If your bitcoin is in self-custody on a hardware wallet secured by a seed phrase that only you know, there is no institution to contact.

A will can say "I leave my bitcoin to my wife." But if she cannot physically access the wallet, the will is meaningless. The legal right to own the bitcoin does not grant the technical ability to access it.

Existing Solutions Only Solve Part of the Problem

Several companies offer Bitcoin inheritance features. They are worth knowing about, but they all share the same limitation: they only cover bitcoin held inside their own system.

Casa ($250-$2,100/year) offers inheritance as part of their multisig custody product. Your beneficiary gets access to your Casa vault through the Casa app, with a six-month waiting period. It works well, but only for bitcoin stored in a Casa vault.

Nunchuk ($480/year) builds inheritance into their multisig wallet using on-chain timelocks. Your beneficiary needs a "Magic Phrase" and a "Backup Password" to claim. Technically elegant, but designed for people who already understand multisig.

River (free with account) lets you set beneficiaries on your River account. When you die, they prove it and River transfers the bitcoin. Simple and effective, but only covers bitcoin held on River.

These are custody solutions. They answer the question "how does the bitcoin move on-chain?" That is an important question. But it is not the only question, and for most families, it is not even the hardest question.

The hardest question is: "My husband just died. He talked about bitcoin. I don't know what a wallet is. I don't know what an exchange is. I don't know where to start. And there are people in my DMs claiming they can help me recover it."

No custody product solves that.

The Real Problem Is Human, Not Technical

Most bitcoiners do not keep all their bitcoin in one place. A typical setup might include some on an exchange like River or Strike, a hardware wallet like a Trezor or Coldcard, a mobile wallet with a small Lightning balance, and maybe some in a Bitcoin IRA through Swan.

Casa covers the Casa vault. Nunchuk covers the Nunchuk wallet. River covers the River account. Nobody covers the full picture. And nobody is writing the instruction manual for the person who has to deal with all of it while grieving.

The real need is not another custody tool. It is a plan. A single document that tells your non-technical family member: here is everything I hold, here is where it is, here is how to access each one, here is what to do first, here is what to avoid, and here is who to call for help.

What a Complete Bitcoin Succession Plan Looks Like

A succession plan for Bitcoin is not a legal document. It is an instruction manual. It answers one question: if you are gone, what does the person you trust need to know and do to access your bitcoin?

Here is what a complete plan covers.

1. An Inventory of Where Your Bitcoin Is

Write down every place you hold bitcoin. For each one, note the platform or wallet type ("River account" or "Trezor Model T" or "Blue Wallet on my phone"), how to access it (exchange accounts need email, password, and two-factor authentication; hardware wallets need the device and PIN; software wallets need the app and potentially a password), and an approximate amount. Your beneficiary needs to know the scale of what they are dealing with.

2. Seed Phrase Location and Instructions

If you use self-custody, your seed phrase is everything. Your beneficiary needs to know three things: that it exists, where it is, and what to do with it.

Write clear instructions. Do not assume they know what a seed phrase is. Explain it like they have never touched a Bitcoin wallet.

3. A Trusted Contact

Name someone your beneficiary can call who understands Bitcoin. Not a "crypto recovery service" they found on Google. A real person. A friend, a family member, a fee-only financial advisor who understands digital assets.

This person should know they are your emergency contact for this purpose. They do not need to know your seed phrase or holdings. They just need to be available to walk your beneficiary through the process.

4. The Scam Prevention Section

This might be the most important part of the entire plan. When someone inherits bitcoin and does not understand it, they are the perfect scam target. Your plan should explicitly warn:

5. Tax Implications

When bitcoin is inherited, the cost basis resets to the fair market value on the date of death. This is called a "stepped-up basis." If you bought bitcoin at $10,000 and it is worth $80,000 when you die, your beneficiary's cost basis is $80,000, not $10,000. If they sell at $85,000, they owe tax only on the $5,000 gain.

Your beneficiary should consult a CPA before selling any inherited bitcoin. The tax rules are favorable but they need to be handled correctly.

6. What to Do With Custody Products

If you use Casa, Nunchuk, or another inheritance-aware custody product, note which one, how your beneficiary should initiate the claim process, and any waiting periods or verification steps involved. These products handle the on-chain transfer, but your plan still needs to tell your beneficiary that the product exists and how to start the process.

This is why a succession plan is complementary to custody products, not a replacement. The custody product moves the bitcoin. The plan tells your family the custody product exists.

How to Store Your Plan Safely

The plan itself is sensitive information. It contains details about where your bitcoin is and how to access it. Storing it requires the same care as storing a seed phrase.

Do not keep the plan in a cloud document, email draft, or notes app. If someone compromises your email, they have the roadmap to your bitcoin.

Options that work: a sealed envelope in a fireproof safe, with your beneficiary told where the safe is and how to open it. A sealed document held by your estate attorney, with instructions to release it to your named beneficiary. A split approach: the plan (without the seed phrase) in one location, and the seed phrase in a separate secure location. Your beneficiary knows about both and where to find them.

Review the plan once a year. Update it if you change wallets, move bitcoin, or change beneficiaries.

The Uncomfortable Truth

Most bitcoiners reading this will agree it matters and then do nothing about it. The topic is uncomfortable. It forces you to think about dying. It feels paranoid. And the process of writing it all down feels like a chore when you could be checking the price.

But self-custody comes with self-responsibility. You chose to be your own bank. Part of that job is making sure your vault does not become a tomb.

You do not need to solve everything today. Start with one step: write down where your bitcoin is and tell one person that the document exists. That alone puts you ahead of most holders.

We Are Building Something to Make This Easier

Existing inheritance products require you to move your bitcoin into their system. They solve one piece of the puzzle. We are building something different.

Bitcoin Legacy is wallet-agnostic, setup-agnostic, and platform-agnostic. It does not matter if your bitcoin is on River, in a Trezor, in a Casa vault, in a Lightning wallet, or spread across all of them. Bitcoin Legacy helps you build a complete succession plan that covers everything, generates a customized instruction letter for your beneficiary, and reminds you to keep it updated as your setup changes.

It is not a custody product. It is the layer that sits on top of however you already hold your bitcoin.

If you want early access when it launches, join the waitlist.