Home › Research › Bitcoin Letter to Heirs
- Why 65–70% of Bitcoin Estates Fail
- Letter of Instruction vs. Will vs. Trust
- What a Bitcoin Letter of Instruction Must Cover
- What to Never Put in the Letter
- The Two-Document System
- Multisig Inheritance: A Step-by-Step Walk-Through for Heirs
- Exchange Inheritance Procedures
- Writing the Letter: Tone and Format
- Complete Sample Letter Template
- When to Update the Letter
- Storing the Letter
- Educating Heirs Before You're Gone
- Frequently Asked Questions
Here is the uncomfortable truth about Bitcoin estate planning: you can do everything right — set up a trust, fund it properly, name your beneficiaries, work with a qualified attorney — and your heirs can still lose every single satoshi.
Not because your legal documents were flawed. Not because the government seized anything. But because the people you love most had no idea what Bitcoin was, where yours was stored, how to access it, or what mistakes to avoid in the first 48 hours after your death.
The document that prevents this catastrophe isn't your will. It isn't your trust agreement. It's a letter — a plain-language, deeply personal letter written directly to the people who will inherit your Bitcoin. A bitcoin letter to heirs is the single most important estate planning document most Bitcoin holders never write.
This guide walks you through exactly what goes in that letter, what must never go in it, how it fits alongside your legal documents, how exchange and multisig inheritance actually work in practice, and — at the end — a complete template you can copy and personalize today.
Why 65–70% of Bitcoin Estates Fail
The numbers are staggering. Chainalysis estimates that roughly 3.7 million Bitcoin — approximately 17–20% of all Bitcoin ever mined — are permanently lost. At current valuations, that represents over $140 billion in wealth that will never be recovered. Some of those coins were lost to forgotten passwords in Bitcoin's early days. But an increasing share represents something far more preventable: estate planning failures where holders died without leaving adequate instructions for their families.
Industry estimates suggest that 65–70% of Bitcoin estates result in partial or total loss of the holdings. Not because of bad legal work. Because of an access gap — the chasm between legal ownership and practical ability to retrieve the asset.
This happens for predictable, repeatable reasons:
- Heirs don't know Bitcoin exists. Self-custodied Bitcoin leaves no paper trail. No monthly statements arrive in the mail. No bank sends a notification. If you don't explicitly tell someone, the Bitcoin disappears with you.
- Hardware wallets are discarded. A Coldcard or Ledger looks like a USB drive to someone who doesn't know what it is. Families cleaning out a deceased person's belongings routinely discard devices worth hundreds of thousands — or millions — of dollars.
- Seed phrases are lost. The 24 words that control access to the Bitcoin were written on a piece of paper that was thrown away, stored in a location no one knew about, or destroyed in a fire or flood with no backup.
- Heirs fall for scams. Grieving family members who suddenly learn they've inherited Bitcoin become immediate targets. "Crypto recovery specialists" and phishing sites extract seed phrases from people who don't understand what they're handing over.
- PIN lockouts. Well-meaning heirs try to guess the PIN on a hardware wallet and trigger the device's security wipe after too many failed attempts.
Every one of these failures has a single common root: the holder did not leave a letter of instruction. They assumed the legal documents were enough. They assumed their tech-savvy nephew would figure it out. They assumed they'd get around to it later.
The letter of instruction is what closes the access gap. It's the bridge between your carefully constructed Bitcoin estate plan and the real human beings who will execute it under the worst possible emotional conditions.
A will says: "I leave my Bitcoin holdings to my children in equal shares."
A bitcoin letter to heirs says: "Here is what Bitcoin is. Here is approximately how much I own. Here is where it is held. Here are the first three things you should do. Here are the five things you must never do. Here are the people to call, in this order. And here is where to find the sealed document that gives you actual access."
Without the letter, the will is a legal formality pointing at an asset your heirs cannot touch.
Letter of Instruction vs. Will vs. Trust
Before writing the letter, it helps to understand exactly where it fits in the estate planning hierarchy — and why it exists as a separate document in the first place.
The Will
A will is a legal instrument filed with a probate court after your death. It names an executor, designates who receives your property, and appoints guardians for minor children. It is a legal document — it satisfies the court's requirements for distributing your estate.
The problem: wills go through probate. Probate is public, slow (typically 6 months to 3 years depending on the state), and expensive (3–7% of estate value in legal and administrative fees). More critically for Bitcoin, probate records become part of the public record. Anyone can search them. A will that mentions "my Bitcoin holdings valued at approximately $X" is now a public advertisement of your family's digital wealth.
A will also cannot teach your heirs anything. It is written for judges and attorneys, not for your spouse who has never opened a Bitcoin wallet.
The Trust
A revocable living trust is a legal entity that holds assets during your lifetime and distributes them at death without probate. It's private, faster, and typically the preferred structure for significant Bitcoin holdings. Our estate planning guide covers trust structures in detail.
The problem: a trust is still a legal document. It specifies distribution terms, names trustees, and addresses tax strategy. It does not explain what a hardware wallet is, where the seed phrase backup is stored, or why your heirs should not type 24 words into a website that a "crypto recovery expert" sent them.
The Letter of Instruction
A letter of instruction is a private, non-legal document that sits alongside the will or trust and provides practical guidance. It does not need to be filed with a court. It does not need to be notarized (though dating and signing it is best practice). It is not legally binding — it is practically essential.
Think of it this way: the trust is the architecture. The will is the legal framework. The letter of instruction is the user manual. Without the user manual, the architecture and framework are useless — because no one in your family knows how to operate the system you built.
| Feature | Will | Trust | Letter of Instruction |
|---|---|---|---|
| Legal document | Yes | Yes | No |
| Goes through probate | Yes | No | No |
| Becomes public record | Yes | No | No |
| Filed with court | Yes | No | No |
| Explains how to access Bitcoin | No | No | Yes |
| Names who gets what | Yes | Yes | Optional |
| Written for | Judge / court | Trustee / attorney | Your heirs directly |
All three serve different purposes. All three are necessary for a complete Bitcoin estate plan. But if you had to choose only one document beyond the legal minimum, the letter of instruction would save more Bitcoin than any trust ever drafted.
What a Bitcoin Letter of Instruction Must Cover
A bitcoin letter to heirs has a precise scope. It provides enough information for your heirs to understand the situation, take the right immediate actions, avoid catastrophic mistakes, and connect with the professionals who will guide them through the rest. Here is what it must address:
1. Overview of All Bitcoin Holdings
Your heirs need to know what exists and approximately where it is — without exact balances (which go stale and create security risks). Categorize your holdings by custody type:
- Self-custody holdings: Bitcoin you control directly via hardware wallets. Describe the approximate significance ("a substantial portion of our family's wealth" or "the largest single asset in our estate") without giving exact BTC amounts or dollar values.
- Exchange accounts: Which exchanges hold Bitcoin on your behalf — Coinbase, Kraken, Gemini, River, Swan, etc. Note that these are accounts in your name at specific companies, similar to brokerage accounts.
- Bitcoin IRA or self-directed IRA: If you hold Bitcoin inside a retirement account, name the custodian (Unchained, iTrustCapital, Choice, etc.), the account number, and the custodian's contact information. IRA inheritance has its own rules and timelines — your heirs need to know it exists to start the process.
2. Hardware Wallet Location and Model
Describe the physical device specifically. "A small black device called a Coldcard Mk4 in a grey carrying case, located in the bottom drawer of the fireproof safe in the home office." Include the manufacturer and model name — your heirs or their technical advisor will need this to know which software to use. If you have multiple hardware wallets, describe each one.
3. Seed Phrase Location — NOT the Seed Phrase Itself
Never put the seed phrase in the letter of instruction. The letter should reference WHERE the seed phrase is stored: "The sealed envelope containing the recovery words is in the fireproof safe at [address]" or "The metal backup plate is in the safety deposit box at [bank], Box #[number]." The letter points to the keys without containing the keys.
4. Multisig Setup Details
If your Bitcoin is secured with a multisig arrangement, the letter needs to explain the structure in plain language. Your heirs need to know:
- The quorum: "This Bitcoin requires 2 of 3 keys to access" — and what that means in practice.
- Location of each key device: Key 1 is at [location], Key 2 is at [location], Key 3 is held by [person or institution].
- Where the wallet descriptor file (or BSMS file) is stored: This is the configuration file that tells the software how the multisig was assembled. Without it, even having all three keys may not be enough. Explain that this file is stored at [location] and that it must be provided to the technical advisor along with the signing devices.
5. Software Needed for Access
Name the specific software or app used to interact with the Bitcoin: Sparrow Wallet, Specter Desktop, Nunchuk, Blue Wallet, Electrum, etc. Include the official download URL. Your heirs' technical advisor will use this, but having the information in the letter prevents delays and potential mistakes (like downloading fraudulent software from the wrong website).
6. Exchange Account Information
For each exchange where you hold Bitcoin, include:
- The exchange name and the email address associated with the account
- A reference to where login credentials are stored (not in this letter — in the sealed access document)
- A note about the exchange's estate/inheritance process: "Coinbase has an estate support process. Contact their support team with a death certificate and letters testamentary."
7. Who to Contact for Help
A prioritized, annotated list of professional contacts — the people your heirs should reach out to, in order, upon your death. Don't just list names. Explain why each person matters:
- Estate attorney — first call. They initiate the legal process and may hold copies of key documents. "[Name] has been briefed on our Bitcoin holdings. Call them first."
- Tax advisor (CPA) — before anyone sells anything. The stepped-up cost basis, timing of sales, and inherited Bitcoin tax implications all require professional guidance.
- Bitcoin-knowledgeable financial advisor or custodian — someone who understands Bitcoin specifically, not just traditional financial planning.
- Technical contact — if your custody setup is complex, a Bitcoin consultant or trusted technical specialist who can assist with hardware wallet recovery and multisig reconstruction.
What to Never Put in the Letter
This is non-negotiable. The following items must never appear in your bitcoin letter to heirs:
- Seed phrases — the 12 or 24 words that control your Bitcoin. Never. Not under any circumstances. A letter containing seed phrases is not an estate planning document — it's a bearer instrument worth your entire Bitcoin stack, sitting in a filing cabinet.
- Private keys — the raw cryptographic keys to any wallet.
- PINs or passwords — to hardware wallets, exchange accounts, or anything else.
- Passphrases — the optional "25th word" used with some wallet setups.
- Exact balances — a general range is fine. Exact numbers create security risks and go stale within days.
Why this hard line? Because the letter may become semi-public. If it's stored with an attorney, it may be seen by paralegals, office staff, or co-counsel. If stored in a home safe, any family member with access could find it. If accidentally attached to a will that enters probate, it becomes part of the public record.
The letter should be written so that if an unauthorized person reads it, they learn that you own Bitcoin and who your advisors are — but they gain zero access to the Bitcoin itself. All access credentials belong in a separate, more secure document.
The Two-Document System
The most effective bitcoin letter to heirs doesn't stand alone. It's one layer in a two-document system that separates information by sensitivity level. This is the standard we recommend to every family we work with.
Document 1: The Letter of Instruction
This is the document this article is about. High-level, plain-language, written directly to your heirs. It orients them, gives them immediate action steps, identifies what you own and where it's held, warns them about mistakes, and points them toward the right professionals.
Security level: Moderate. Can be stored with trust documents, in a home safe, or with your estate attorney. If someone unauthorized reads this letter, they learn that you own Bitcoin and who your advisors are — but they gain zero access to the Bitcoin itself.
Stored: With your trust binder at home. A second copy with your estate attorney. A digital encrypted backup accessible to your executor.
Document 2: The Sealed Access Document
This is where the actual keys live. Seed phrases (the 24 words), hardware wallet PINs, exchange login credentials, password manager master passwords, passphrases — everything needed to physically access the Bitcoin.
Security level: Maximum. This document, if compromised, provides full access to your Bitcoin. For multisig setups, distribute the keys — no single sealed access document should contain enough keys to meet the quorum.
Stored: The most secure location available — a fireproof safe in a different location than Document 1, a bank vault, attorney escrow. Multiple copies in multiple secure locations. Never in the same place as the letter of instruction. Never on a computer. Never photographed. Never emailed. NOT shared with anyone until death or incapacity.
The beauty of this system is that no single document — even if stolen or compromised — gives an attacker what they need. The letter tells them Bitcoin exists but not how to get it. The sealed access document contains the keys but, without the letter, an attacker may not know which wallets they belong to, how the multisig is configured, or what software to use.
Two documents. Two locations. Two security levels. One system that works.
Multisig Inheritance: A Step-by-Step Walk-Through for Heirs
If your Bitcoin is secured with a multisig arrangement, your letter of instruction needs to include — or reference — a step-by-step recovery process that your heirs (or their technical advisor) can follow. Here is what that walk-through looks like for a typical 2-of-3 multisig setup:
Using the letter of instruction, find all three signing devices (hardware wallets). In a 2-of-3 setup, you need at least two — but locating all three gives you redundancy in case one is damaged or inaccessible. The letter should specify: "Key 1 is a Coldcard Mk4 in the home safe. Key 2 is a Ledger Nano X held by [trusted person/institution]. Key 3 is a Trezor Model T in the safety deposit box at [bank]."
The wallet descriptor (sometimes called a BSMS file or multisig configuration file) contains the information needed to reconstruct the multisig wallet in software. Without this file, even having all three hardware wallets may not be enough — the software won't know how the multisig was assembled. The letter should specify where this file is stored: on a USB drive in the home safe, as a printed document with the estate attorney, or in a specific folder on an encrypted drive.
Download the wallet software used to manage the multisig. If your letter specifies Sparrow Wallet, download it from sparrowwallet.com (verify the URL carefully). If Specter, from specter.solutions. If Nunchuk, from nunchuk.io. Import the wallet descriptor file into the software. The software will reconstruct the multisig wallet and show the current balance.
Once the wallet is reconstructed in software, verify the balance matches what was described in the letter of instruction (approximately). Do not attempt to move any Bitcoin yet. Confirm with the estate attorney and tax advisor that the inheritance process is properly underway before initiating any transactions.
When the estate attorney and tax advisor confirm it's appropriate to move the Bitcoin, create a transaction in the coordination software sending the Bitcoin to a wallet the heir controls. Sign the transaction with two of the three hardware wallets (connect them one at a time, each signing the same transaction). Once two signatures are applied, the transaction can be broadcast to the Bitcoin network.
In a 2-of-3 multisig, losing one key device is not catastrophic — you still have two remaining devices, which meet the quorum. However, you've lost your redundancy. The first priority after recovering access should be setting up a new multisig with fresh keys and sweeping the Bitcoin into the new arrangement. If the lost key's seed phrase backup exists (in the sealed access document), the key can be restored onto a new hardware wallet of the same type.
For a deeper exploration of multisig inheritance mechanics, including edge cases and recovery scenarios, see our dedicated multisig inheritance guide.
Exchange Inheritance Procedures
If any portion of your Bitcoin is held on an exchange, your letter of instruction should name the exchange and outline the general inheritance process. Here is what the major exchanges require:
Coinbase
Coinbase offers a Legacy Contact feature — you can designate someone who receives access to your account after your death. If you've set this up, note it in the letter. Coinbase also has a formal estate support process: heirs submit a death certificate, letters testamentary (or letters of administration), government-issued ID of the executor, and a notarized letter of instruction to Coinbase's estate team. Processing typically takes 4–8 weeks.
Kraken
Kraken requires an estate access request submitted through their support system. Required documents: certified death certificate, letters testamentary or court order appointing the estate representative, government-issued ID of the representative, and proof of the decedent's account (email address or account ID). Kraken's process is thorough and can take 6–12 weeks.
Gemini
Gemini has an estate process similar to traditional brokerages. Heirs need to contact Gemini support with a death certificate, letters testamentary, and identification. Gemini will guide the executor through their specific requirements and transfer the assets to the estate or directly to beneficiaries depending on the legal documentation provided.
General Steps for Any Exchange
Regardless of which exchange holds the Bitcoin, your heirs will need:
- A certified death certificate (order at least 10 copies — many institutions require originals)
- Letters testamentary or letters of administration from the probate court (this requires the will to be filed with the court, even if a trust exists)
- Government-issued ID of the executor or estate representative
- Proof of account — the email address or account number associated with the exchange account (include this in your letter)
- Sometimes a notarized affidavit or additional legal documentation depending on the exchange and jurisdiction
Include in your letter: the exchange name, the email address on the account, and a note to contact the exchange's estate/inheritance support team with the required documents. Your estate attorney will guide the process, but having the information readily available saves weeks of detective work.
Bitcoin Mining and Your Letter of Instruction
If you mine Bitcoin — or acquire newly mined Bitcoin through a hosting arrangement — every batch arrives with a fresh cost basis equal to fair market value at receipt. This creates unique estate planning advantages: depreciation deductions on mining equipment, operational expense write-offs, and a continuous flow of Bitcoin with known, documented basis. Miners should update their letter of instruction each time a significant new batch of mined BTC is acquired, and ensure heirs understand both the mining infrastructure and the tax benefits being passed down.
Learn How Mining Families Build Generational Wealth →Writing the Letter: Tone and Format
The bitcoin letter to heirs is not a legal document. It's not a technical manual. It's a letter — written in your voice, directly to the people you love, designed to be read by someone who may have zero Bitcoin knowledge and is likely in the worst emotional state of their life.
Write for Someone with Zero Bitcoin Knowledge
Assume your reader has never thought about cryptocurrency. Avoid jargon entirely. When you must use a technical term (seed phrase, hardware wallet, multisig), define it immediately in plain language. "A seed phrase — a set of 24 ordinary English words that function as the master key to the Bitcoin" is far better than just "seed phrase."
Write Like You're on the Phone Walking Them Through It
The best letters read like a conversation. Not formal. Not legal. The tone of a patient, calm, knowledgeable family member explaining something important over the phone. "Don't worry about understanding everything right now. Just follow these steps in order, and the people I've listed below will help with the rest."
Be Specific About Physical Details
"The hardware wallet is in the safe" is good. "The black Coldcard Mk4, about the size of a credit card but thicker, in a grey fabric zippered case, is in the bottom drawer of the black SentrySafe fireproof safe in the home office closet, behind the manila folder with the insurance documents" is better. Under stress, your heirs will be grateful for every detail that reduces ambiguity.
Date It, Sign It, Version It
Every copy of the letter should include a date and version number at the top: "Version 4 — March 15, 2026." This makes it immediately clear which version is current if multiple copies exist. Sign it by hand. The date tells your heirs how current the information is — a letter dated three months before your death is likely accurate; one dated five years ago needs verification.
Read It Out Loud
Does it sound like you? Would your family recognize your voice in it? If it reads like a legal document or a blog post, rewrite it. This is the last practical communication your family receives from you about this asset. It should sound like you.
Complete Sample Letter Template
Below is a complete, usable template for a bitcoin letter to heirs. Adapt it to your specific situation, custody arrangements, and family. Sections in brackets [like this] require your personal information. Remove sections that don't apply (e.g., if you don't use multisig, delete that section).
Date: [Month Day, Year] | Version: [Number]
A Letter to My Family Regarding Bitcoin
This letter is for: [Names of heirs/beneficiaries]
If you are reading this, I am no longer here, and I am sorry for that. This letter contains important information about an asset I own called Bitcoin. Please read it carefully and follow the instructions below. I have done my best to make this simple and clear. Take your time.
Section 1: What Bitcoin Is
Bitcoin is digital money. It is not controlled by any bank or government. It exists on a global computer network, and the only way to access it is with a set of secret codes called "keys." Think of it like a vault that exists on the internet — but there is no bank manager who can open it for you. If you have the keys, you have the Bitcoin. If the keys are lost, the Bitcoin is gone forever. There is no customer service, no password reset, and no override. This is why the instructions in this letter are so important.
Section 2: What I Own and Where It Is
Self-Custody (Bitcoin I control directly):
- [Hardware Wallet Brand and Model] — a small physical device located in [specific location]. It looks like [brief physical description]. Do NOT discard this device under any circumstances.
- [If multisig:] My Bitcoin is secured with a system called "multisig" that requires [2] of [3] keys to access. Key 1 is [location]. Key 2 is [location]. Key 3 is [location/held by person or institution]. The wallet configuration file is stored at [location]. The software used to manage this is called [Sparrow/Specter/Nunchuk] — download it from [official URL].
Exchange Accounts (companies that hold Bitcoin on my behalf):
- [Exchange Name] — account under email [email address]. This company has an estate/inheritance process. Contact their support team with a death certificate and letters testamentary.
- [Additional exchanges as needed]
Bitcoin IRA / Retirement Account:
- [Custodian Name] — Account #[number]. Contact: [phone/email]. This is a retirement account with special inheritance rules — the estate attorney and CPA will guide you.
These holdings together represent [general description — e.g., "a significant portion of our family's wealth"]. I have not listed exact amounts because they change with market conditions. The advisors listed below know the approximate scope.
Section 3: Immediate Steps (First 48 Hours)
- Call [Estate Attorney Name] at [phone number]. Tell them I have passed and that you have this letter. They know what to do and will guide you through everything. This is the most important phone call.
- Secure any physical devices. If you know the location of the hardware wallet(s) described above, make sure they are in a safe place. Do not attempt to use them, unlock them, or guess any PINs.
- Do nothing else with the Bitcoin. Do not try to sell, move, or "figure it out" on your own. Professional help is coming. The Bitcoin is safe where it is.
Section 4: What NOT to Do
Please take this section seriously. These mistakes are irreversible.
- Do NOT tell anyone outside the immediate family that you have inherited Bitcoin. Do not post about it on social media. Scammers specifically target Bitcoin heirs.
- Do NOT share the seed phrase (24 words) with anyone. If you find a set of 24 words — on paper, on metal, anywhere — those words are the master key. Anyone who has them can take everything instantly. Never type them into any website. Never share them. Never photograph them.
- Do NOT discard any small electronic devices. Hardware wallets look like USB drives or small calculators. They may look worthless. They are not.
- Do NOT try to guess PINs or passwords. Most hardware wallets erase themselves permanently after too many wrong attempts. Wait for professional help.
- Do NOT trust unsolicited offers of help. Anyone who contacts you offering "Bitcoin recovery services" is a scammer. Only work with the people listed below.
- Do NOT sell any Bitcoin for at least 90 days. The advisors below will help you understand tax implications and your options. There is no urgency. The Bitcoin will wait for you. Please give yourself time to grieve and to make this decision with clear eyes.
Section 5: Who to Call (In This Order)
- Estate Attorney: [Name], [Firm]
Phone: [Number] | Email: [Email]
[Name] has been briefed on our Bitcoin holdings and knows the overall estate plan. Call them first. - Tax Advisor (CPA): [Name], [Firm]
Phone: [Number] | Email: [Email]
Before selling or moving any Bitcoin, consult [Name] about the stepped-up cost basis and tax implications. - Financial Advisor / Bitcoin Specialist: [Name], [Firm]
Phone: [Number] | Email: [Email]
[Name] understands Bitcoin and can help you evaluate options for the inheritance. - Technical Contact: [Name]
Phone: [Number] | Email: [Email]
[Name] understands the specific technical setup of my Bitcoin storage and can help with hardware wallet recovery or multisig reconstruction.
Section 6: Where to Find Access Credentials
This letter intentionally does not contain passwords, PINs, seed phrases, or login credentials. That information is in a separate sealed document stored at: [location — e.g., "in a sealed envelope in the fireproof safe at [address]" or "in attorney escrow with [Attorney Name]" or "in the safety deposit box at [Bank], Box #[Number]"].
Do not attempt to use that document without professional guidance from the people listed above. They will walk you through it.
Section 7: My Wishes
[Personalize this section. Some examples:]
"I bought Bitcoin because I believe it is the best savings technology humanity has ever created. My hope is that you will take the time to learn about it before making any decisions. If, after careful thought and professional advice, you decide to sell — that is completely okay. But please don't sell out of fear or confusion. Give it time."
With all my love,
[Your Name]
When to Update the Letter
A bitcoin letter to heirs is not a one-time document. It requires annual review at minimum, and immediate updates when material changes occur. An outdated letter can be worse than no letter — it sends your heirs down dead ends at the worst possible time.
Changes that trigger an immediate update:
- You acquire a new hardware wallet or retire an old one
- You open or close an exchange account
- You change your custody setup — moving from single-sig to multisig, changing the quorum, adding or removing a key holder
- You move Bitcoin between custodians or wallets
- A professional contact changes — new attorney, new CPA, new advisor
- Your family situation changes — new beneficiaries, divorce, marriage, birth of a child
- Bitcoin's share of your overall estate changes significantly
- You acquire a significant batch of newly mined Bitcoin (if you mine — see the tax strategy note above)
Mining Creates an Ongoing Update Obligation
If you mine Bitcoin — or receive mined Bitcoin through a hosting arrangement — your holdings grow continuously with each new batch. Every batch arrives with a fresh cost basis, creating unique tax advantages for your estate. But it also means your letter of instruction needs more frequent updates to reflect new custody arrangements, new hardware, and updated approximate holdings. Set a quarterly review cadence if you mine, not just annual.
Explore Bitcoin Mining Tax Strategy →Every update should include a new date and version number at the top. Destroy outdated copies. Replace them with the current version in all storage locations. An heir who finds "Version 2 — January 2024" and "Version 5 — March 2026" in different locations needs to know instantly which one to trust.
Set a calendar reminder. Review the letter on the same day every year — your birthday, January 1st, or the anniversary of your first Bitcoin purchase. Whatever you'll actually remember.
Storing the Letter
Storage matters as much as content. The best bitcoin letter to heirs is useless if your heirs can't find it.
Where the Letter Should Be Stored
- With your trust documents. If you have a revocable living trust, the letter should be stored with the trust binder. Your successor trustee will find it when they need it.
- With your estate attorney. Your attorney's office can hold a copy and deliver it to your executor or trustee upon notification of your death.
- In a home safe or secure filing cabinet. A physical copy in a location your family knows about and can access. Tell your executor and at least one heir exactly where this is.
- Digital encrypted backup. An encrypted copy in a location your executor can access — a password manager, an encrypted cloud folder, or a secure digital vault. Not as the only copy. As a backup to the physical copies.
The ideal setup: at least two physical copies in different locations, plus one encrypted digital backup. Three copies, two locations, one consistent version.
Where the Letter Should NOT Be Stored
- Inside the will. Wills go through probate. Probate documents become public record. If your letter is attached to or referenced within the will as an exhibit, it may become visible to anyone who searches the court records.
- Only on a computer. Computers die. Hard drives fail. Passwords are forgotten. A digital-only letter has a significant risk of being inaccessible precisely when it's needed most.
- In the same location as the seed phrases. The entire point of the two-document system is separation. If the letter and the sealed access document are in the same safe, a single point of compromise (fire, flood, theft) can expose or destroy both.
- In a safety deposit box as the only copy. Bank access can be complicated after death — the box may be sealed pending probate, and your heirs may need the very documents inside the box (like the letter) to get the court order required to open it. Never rely on a safety deposit box as the sole storage location.
Educating Heirs Before You're Gone
The letter is a backup. It is not a substitute for education.
The single most effective thing you can do to protect your Bitcoin estate is to walk at least one trusted heir through your setup while you're still alive. Not by handing them the letter and hoping they read it. By sitting with them, physically showing them the hardware wallet, introducing them to the estate attorney, and explaining the two-document system in person.
What to Do While You're Still Here
- Show them where the letter is stored. "The letter is in this drawer, in this safe. Here's how to open it." Remove the mystery.
- Introduce them to your estate attorney and financial advisor. A five-minute phone call or email introduction means your heir already has a relationship with the professional who will guide them. That makes the first call after your death dramatically easier.
- Walk them through the hardware wallet — without unlocking it. Show them what it looks like. Explain that it's not a USB drive and should never be discarded. Explain that they should never try to guess the PIN.
- Do a supervised test recovery. If your heir is technically capable and willing, walk them through the entire recovery process using a test wallet with a small amount of Bitcoin. An heir who has practiced once — even with guidance — is 10x more likely to succeed under the stress of an actual inheritance event.
- Verify they can locate all documents. Ask them: "If I died tomorrow, where would you find the letter? Where would you find the sealed access document? Who would you call first?" If they can't answer all three, the system isn't working yet.
The Graduated Approach
You don't have to reveal everything at once. A graduated approach works well:
- First conversation: "I own Bitcoin. It's a significant asset. I've written a letter that explains everything you need to know. It's stored [here]." This takes five minutes and eliminates the single biggest risk — your heir not knowing Bitcoin exists at all.
- Second conversation: Show them the letter. Walk through it together. Answer their questions. Introduce them to the attorney (even if just by email).
- Third conversation: Show them the hardware wallet. Explain the two-document system. If they're willing, do a test recovery.
Some holders resist this because it means revealing their Bitcoin holdings to family members. This is a legitimate concern — and it's a personal decision. But the alternative is a letter discovered by grieving people who are seeing these concepts for the first time, with no one available to answer questions. The letter works. It works much better if the reader has been introduced to the concepts while you were alive.
Frequently Asked Questions
What is a Bitcoin letter of instruction for heirs?
A Bitcoin letter of instruction is a private, non-legal document written directly to your heirs that explains what Bitcoin you own, where it is held, how to access it, who to contact for help, and what mistakes to avoid. It sits alongside your will or trust and provides the practical guidance that legal documents cannot. It does not need to be filed with a court or notarized, though dating and signing it is best practice.
Should I put my seed phrase in my letter to heirs?
Never. The letter of instruction should reference WHERE the seed phrase is stored — not contain the seed phrase itself. Combining both in one document creates a catastrophic single point of failure: anyone who finds that document gains full access to your Bitcoin. Use the two-document system described in this guide.
How is a letter of instruction different from a will?
A will is a legal instrument that goes through probate court — it's public, slow, and tells the court who receives your assets. A letter of instruction is a private companion document that provides practical guidance on HOW to access specific assets. The will says "my daughter gets my Bitcoin." The letter says "here's what Bitcoin is, where the hardware wallet is, and who to call first." Both are essential.
How often should I update the letter?
At minimum once per year. Also update immediately when you: acquire a new hardware wallet, open or close an exchange account, change your custody setup, change professional advisors, or experience a major life event. Date and version-number every update.
Where should I store the letter?
Keep at least two physical copies in different locations: one with your trust documents or estate attorney, and one in a home safe your executor knows about. Add an encrypted digital backup. Never store it in the same location as your seed phrases, and never attach it to your will (which becomes public during probate).
What happens to Bitcoin on exchanges when someone dies?
Each exchange has its own estate process. Generally, heirs need: a certified death certificate, letters testamentary from probate court, government-issued ID of the executor, and proof of the account. Coinbase also offers a Legacy Contact feature. Include the exchange name and account email in your letter so heirs know where to start.
Can my heirs recover Bitcoin from a multisig setup?
Yes — if they have the wallet descriptor file and enough signing devices to meet the quorum. In a 2-of-3 multisig, your heirs need any two of the three keys plus the wallet descriptor. Without the descriptor, even having all three keys may not be enough. The letter should specify where each key device and the descriptor file are located.
Should I tell my heirs about the letter while I'm alive?
Strongly recommended. The letter is a backup, not a substitute for conversation. Walk at least one trusted heir through your setup while you're alive. Show them where the letter is, introduce them to your advisors, and ideally do a supervised test recovery. An heir who has practiced once is dramatically more likely to succeed.
The Letter You Write Today
Most Bitcoin holders reading this have not written a bitcoin letter to heirs. The reasons are always the same: it feels morbid, it's never urgent, the custody setup is "still being finalized," there's always something more pressing.
Here is the reality: if you died tomorrow, would your family know what to do with your Bitcoin? Would they know it exists? Would they know not to throw away the hardware wallet? Would they know who to call?
If the answer to any of those questions is no, then the most valuable thing you can do today — more valuable than checking the price, more valuable than optimizing your custody setup, more valuable than reading about the next halving — is to open a document and start writing.
It doesn't have to be perfect. The template above gives you a structure. Thirty minutes of writing today could save your family from losing everything. You can refine it next week. You can update it next month. But write the first version now.
Your Bitcoin is only as safe as your heirs' ability to access it without you. The letter is what makes that possible.
For a comprehensive view of how this letter fits into a complete estate strategy — including trusts, custody architecture, and tax planning — start with our complete Bitcoin estate planning guide.