If you die without a Bitcoin inheritance plan, your BTC dies with you. This guide covers every approach — letter of instructions, multisig, timelocks, Shamir backup, and professional estate services.
If you die without a plan, your Bitcoin dies with you. Unlike a bank account, there is no customer service line to call, no probate court that can override cryptography, and no "forgot my password" flow for a hardware wallet. Roughly 3–4 million Bitcoin are estimated permanently lost — most from early holders who died or lost access. Don't add to that number.
This guide covers every approach to Bitcoin inheritance: from simple paper instructions to multisig setups and professional estate services.
Your Bitcoin is protected by a seed phrase (12–24 words). Anyone who has it can access your funds. Anyone who doesn't have it cannot — including your grieving family. The challenge is giving access to your heirs while:
The most accessible starting point. Write a letter that explains:
Store the letter in a fireproof safe, with your attorney, or in a sealed envelope with your will.
Critical: The letter itself should not contain the seed phrase. It should point to where the seed phrase is. This prevents the will from being a security liability.
Limitations: Relies entirely on your heirs following instructions correctly. If they make a mistake (wrong passphrase, wrong address), funds can be lost. Not suitable for large holdings without testing.
Liana is a Bitcoin wallet that supports "miniscript" — a scripting language that enables recovery conditions based on time. You can configure a wallet where:
If you die, your heir waits the timelock period and can then independently sweep your funds — no need to know your seed phrase or PIN. You periodically "reset" the timelock by moving a small amount or signing a transaction to prove you're still alive.
Best for: Technically inclined Bitcoiners comfortable with wallet scripting. Eliminates the "do I need to give my seed phrase to someone?" problem entirely.
A 2-of-3 multisig setup can be structured so that:
Why this is powerful: No single person (attorney, heir) can run off with your Bitcoin. You don't need to give your full seed phrase to anyone. Multiple paths exist for recovery.
Products for multisig inheritance:
Professional services handle the complexity:
| Service | Approach | Best For |
|---|---|---|
| Casa | 3-of-5 multisig, Casa holds one key, inheritance protocol | Hands-off, managed solution |
| Unchained Capital | Collaborative custody, attorney + beneficiary key holders | High net worth, legal integration |
| Cipherwill | Encrypted digital will, time-based unlock | Simple digital document solution |
| Bitcoin Inheritance Protocol | Open-source framework for self-managed inheritance | DIY, no third party |
| Anchorage Digital | Institutional estate planning | Institutions, UHNW |
Shamir's Secret Sharing (SSS) is a cryptographic technique that splits your seed phrase into N "shares" where any K shares can reconstruct the original. For example, a 3-of-5 split gives 5 shares — any 3 of them recreate your seed.
Practical use:
Hardware support: Trezor devices support Shamir Backup (SLIP39) natively. Cypherock X1 also uses a card-based secret sharing system.
Limitation: Complex to set up correctly. Requires educating each share holder. Coordinate carefully to avoid social engineering attacks where one person collects multiple shares.
A Bitcoin-specific trust, drafted by an attorney experienced in digital assets, can:
Bitcoin estate planning attorneys:
Book recommendation: Cryptoasset Inheritance Planning by Pamela Morgan (Bitcoin Storage & Inheritance) is the definitive guide for self-directed planning.
Don't store the seed phrase in your will. Wills enter probate and become public record. Your seed phrase would be visible to anyone who requests the probate file.
Don't rely solely on exchange accounts. If you die with Bitcoin on Coinbase, your heirs face a months-long process of providing death certificates and legal documentation — and may never recover the funds if the account is locked.
Don't make it too complicated for your heirs. A brilliant 7-step multisig recovery process is worthless if your 68-year-old spouse can't execute it under stress. Test your plan with a small amount first.
Don't tell everyone. Inheritance plans often involve disclosing amounts. Limit knowledge to people who absolutely need it.
Don't assume the attorney knows Bitcoin. Most estate attorneys have never set up a hardware wallet. Either use a specialist or give your attorney detailed written instructions.
Your seed phrase needs to survive decades:
| Product | Method | Fire/Water Resistant |
|---|---|---|
| Blockplate | Stamp steel | Yes |
| Cryptosteel Capsule | Slide-in tiles | Yes |
| Billfodl | Slide-in tiles | Yes |
Store one copy with your attorney, one in a fireproof safe at home, one in a bank safe deposit box. Never store all copies in the same location.
Most Bitcoin holders need nothing more complex than this:
For holdings above $100,000, add a managed service (Casa or Unchained) or attorney-drafted trust to this foundation.
What happens to Bitcoin on an exchange when you die? Your heirs can potentially recover it by submitting a death certificate and legal documentation. The process varies by exchange and can take months. There's no guarantee of success, especially with smaller or foreign exchanges.
Can I include Bitcoin in my regular will? Yes, but don't include the seed phrase in the will document itself — it becomes public in probate. Include instructions for accessing the seed, which should be stored separately.
What is the simplest Bitcoin inheritance plan? A sealed letter with your hardware wallet, its PIN, and the location (not the text) of your seed phrase, stored with your attorney or in a fireproof safe with your will.
What if my heir doesn't understand Bitcoin? Managed services like Casa handle the technical complexity. Alternatively, name a bitcoin-savvy executor who can manage the technical steps, then transfer value to your heir.
Does a Bitcoin trust avoid probate? A properly drafted revocable living trust can allow Bitcoin to pass to heirs without going through probate court, just like other trust assets.
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Don't let your Bitcoin die with you. From sealed letters to multisig inheritance with Casa and Unchained, to legal trusts and BitGo institutional services — every approach explained.