Crypto Succession: How to Transmit Your Digital Assets

Table of Contents

1. Introduction
2. The Specific Challenges of Crypto Succession
3. Inventory and Documentation
4. Transmission Methods
5. Legal and Tax Aspects
6. Practical Scenarios
7. Training Your Heirs
8. Planning Security
9. FAQ - Frequently Asked Questions
10. Crypto Succession Checklist
11. Conclusion
12. Sources and References
13. Related Articles

Meta Title: Crypto Succession 2025: Complete Guide to Transmitting Bitcoin and Crypto Assets Meta Description: Plan the transmission of your cryptocurrencies. Will, multisig, Shamir, notary: all the solutions so your heirs can access your digital assets. Keywords: crypto succession, Bitcoin inheritance, transmit cryptocurrencies, crypto will, Bitcoin heirs, crypto estate planning

Introduction

What happens to your crypto if you pass away without leaving instructions?

Fundamental question: What happens to your Bitcoin and cryptocurrencies if you die tomorrow?

If you haven't planned ahead, the answer is probably: they will be lost forever. Your heirs don't know your wallets exist, how to access them, or even where to look.

The problem in numbers

• 3-4 million Bitcoin are considered permanently lost
• A significant portion is due to deaths without planning
• The cumulative value exceeds $300 billion

The crypto security paradox The security that protects your assets during your lifetime can make them inaccessible after your death. The very OPSEC that keeps you safe can condemn your heirs.

This guide walks you through setting up a robust, legal, and technically secure crypto succession plan.

1. The Specific Challenges of Crypto Succession

Unlike bank accounts, no one will come knocking on your door.

1.1 Differences from Traditional Assets

1.2 Risks Without Planning

Scenario 1: Total Loss

• Heirs are unaware that crypto exists
• Keys stored in an inaccessible manner
• Funds lost forever

Scenario 2: Impossible Access

• Heirs know that crypto exists
• Unable to find or decrypt the access credentials
• Frustration and loss

Scenario 3: Theft Through Poor Transmission

• Instructions poorly secured
• Unauthorized third party discovers the keys
• Funds stolen before the succession

Scenario 4: Legal Complications

• No proof of ownership
• Conflicts between heirs
• Complex legal proceedings

1.3 The Timing Problem

When to plan?

• As soon as you hold a significant amount
• Before any risk event (travel, illness)
• Regular updates (annual minimum)

The planning paradox

• Too early: feeling of futility
• Too late: it's too late
• Solution: plan now, revise regularly

2. Inventory and Documentation

Create a clear treasure map that your heirs can follow.

2.1 What to Document

Complete list to prepare

2.2 Documentation Format

Inventory document (to be secured)

=== CRYPTO INVENTORY - [DATE] ===

MAIN HARDWARE WALLET
- Model: Ledger Nano X
- Physical location: Bank safe deposit box [Address]
- PIN: See separate document
- Seed phrase: See backup [location]

MAIN EXCHANGE
- Platform: [Name]
- Email: [address@email.com]
- 2FA: Authenticator on phone [model]
- Recovery procedure: [Instructions]

DEFI POSITIONS
- Protocol 1: [Name, wallet, approximate value]
- Withdrawal procedure: [Steps]

USEFUL CONTACTS
- Notary: [Contact details]
- Crypto advisor: [If applicable]

=== END OF INVENTORY ===

2.3 Updating Documentation

Recommended frequency

• Annual review minimum
• After any significant change
• After any security modification

Versioning

• Date each version
• Destroy old versions
• Inform the relevant parties of updates

3. Transmission Methods

From a simple will to multisig, choose the solution suited to your estate.

3.1 The Explanatory Letter

Document for heirs (non-technical)

Dear [Heir],

I hold digital assets (cryptocurrencies) that are part of
my estate. This document explains how to access them.

STEP 1: LOCATE THE ACCESS CREDENTIALS
- The access keys are located at: [location]
- You will need: [list]

STEP 2: GET HELP
- Contact: [Trusted technical person]
- Informed notary: [Contact details]

STEP 3: SECURE BEFORE ACTING
- Do not tell anyone about this until you have secured everything
- Never enter the keys on a website
- Take time to understand before acting

STEP 4: TRANSFER THE FUNDS
- [Detailed instructions or referral to an expert]

With love,
[Your name]

3.2 The Crypto Will

Inclusion in a notarized will

Advantages

• Legal force
• Secure storage
• Established procedure

Disadvantages

• The notary has access to the contents
• Costly modifications
• Access delay (succession procedure)

What to include in the will

• Existence of digital assets
• Location of access instructions
• Designation of the beneficiary(ies)
• Trusted technical contact

What NOT to include

• Seed phrases directly
• PINs and passwords
• Sensitive technical details

3.3 Multisig with Heir

2-of-3 succession configuration

Key 1: You (everyday use)
Key 2: Bank safe deposit box (your backup)
Key 3: Heir/Notary (succession)

During your lifetime: You use Key 1 + Key 2
After death: Heir uses Key 2 + Key 3

Advantages

• Heir cannot access funds alone during your lifetime
• No need to transmit the full seed
• Security preserved

Disadvantages

• Technical complexity
• Requires heir training
• Significant initial configuration

3.4 Shamir Secret Sharing

Fragmentation for succession

2-of-3 configuration

• Fragment A: Primary heir
• Fragment B: Notary/Lawyer
• Fragment C: Bank safe deposit box

After death

• Heir retrieves Fragment B from the notary
• Combines it with their Fragment A
• Accesses the funds

Advantages

• No single fragment is usable
• Geographic distribution
• Integrated legal procedure

Limitations

• Limited compatibility (SLIP-39)
• Reconstruction complexity
• Risk of error

3.5 Succession Custody Services

Specialized providers

How it works (Casa example)

1. Multisig configuration with Casa key
2. Definition of heirs and procedures
3. In case of death, Casa verifies identity
4. Heir gains access through secure procedure

3.6 Dead Man's Switch

Principle An automatic mechanism that triggers if you fail to respond for a defined period.

Implementations

Example: Google Inactive Account Manager

• Define inactivity period (3-18 months)
• Designate trusted contacts
• Share specific data

Warning: A dead man's switch can trigger by mistake (travel, illness, oversight). Always combine with other methods.

4. Legal and Tax Aspects

Crypto assets are taxable property — plan in full legal compliance.

4.1 French Legal Framework

Crypto in succession In France, cryptocurrencies are considered intangible movable property (biens meubles incorporels) and are included in the estate.

Obligations

• Declaration in the estate inventory
• Valuation as of the date of death
• Application of inheritance duties

4.2 Inheritance Duties

2025 tax schedule (direct line)

Child/parent allowance: EUR100,000

Example

• Crypto succession of EUR500,000 to a child
• After allowance: EUR400,000 taxable
• Estimated duties: ~EUR80,000

4.3 Valuation of Crypto Assets

Official method

• Market price on the date of death (or 6 months later, at the heirs' option)
• Reference: major exchanges (Binance, Coinbase)
• Documentation recommended

Potential issues

• Illiquid crypto (NFTs, rare tokens)
• Complex DeFi positions
• Volatility between death and declaration

4.4 Foreign Declarations

Crypto accounts held outside France

• Mandatory declaration (form 3916-bis)
• Penalty: EUR750 per undeclared account
• Heirs must regularize

4.5 Legal Estate Optimization

Lifetime gifts (donations)

• Allowance of EUR100,000 every 15 years (per parent, per child)
• Possibility of gifting crypto assets
• Beware of capital gains taxation at the time of the gift

Life insurance (assurance-vie)

• Some contracts accept crypto as an underlying asset
• Favorable taxation outside the estate
• Verify the conditions

5. Practical Scenarios

Adapt your strategy to the size of your crypto portfolio.

5.1 Modest Crypto Portfolio (<EUR50,000)

Recommendation: simplicity

Procedure

1. Document in a sealed letter
2. Seed phrase in a fireproof safe
3. Inform 1 person of the letter's existence
4. Annual review

5.2 Significant Crypto Portfolio (EUR50,000-500,000)

Recommendation: multisig or Shamir

Procedure

1. Set up multisig
2. Will mentioning crypto assets
3. Technical letter for heir
4. Identified technical contact (pre-paid if necessary)

5.3 Large Crypto Portfolio (>EUR500,000)

Recommendation: professional service

Procedure

1. Complete audit by a professional
2. Custom structure
3. Complete legal documentation
4. Test the procedures
5. Semi-annual review

5.4 Complex Situation (DeFi, NFTs, Multiple Chains)

Specific challenges

• DeFi positions to unlock
• NFTs to transfer correctly
• Gas fees across multiple chains
• Future airdrops

Recommendations

1. Consolidate if possible before planning
2. Ultra-detailed documentation per chain
3. Technical expert in the procedure
4. Funds set aside for transaction fees

6. Training Your Heirs

Educate your loved ones without revealing all your secrets right away.

6.1 Required Level of Training

Bare minimum

• Understand that crypto exists
• Know that it has value
• Know whom to contact for help

Ideally

• Understand the concept of a seed phrase
• Know how to use a basic hardware wallet
• Identify common scams

6.2 Training Resources

Documents to prepare

• Simplified personalized guide
• Links to quality tutorials
• List of scams to avoid
• Trusted contacts

Progressive training

1. Explain the concept (without technical details)
2. Show a wallet (with a small amount)
3. Have them practice under supervision
4. Validate their understanding

6.3 Choosing the Right Person

Criteria

• Discretion (will not talk about the inheritance)
• Reliability (will be available when needed)
• Technical ability (or willingness to learn)
• Integrity (will not steal the funds)

If no heir is qualified

• Appoint a technical estate executor (executeur testamentaire)
• Set aside funds to pay for this service
• Document this person in the will

7. Planning Security

Protect your succession instructions as carefully as your private keys.

7.1 Risks of Planning

Paradox: Documenting for succession creates vulnerabilities.

7.2 Security Best Practices

Essential rules

• Never store the seed phrase and instructions in the same place
• Multiple copies, multiple locations
• Encrypt digital documents
• Physically seal envelopes

Information hierarchy

Level 1 (Public): "I have digital investments"
+-- Who knows: Family, notary

Level 2 (Confidential): General access procedure
+-- Who knows: Primary heir, notary

Level 3 (Secret): Exact locations, PINs
+-- Who knows: No one (in sealed envelopes)

Level 4 (Critical): Seed phrases
+-- Who knows: No one (secured physical backups)

7.3 Testing the Procedure

Recommended simulation

1. Imagine that you have passed away
2. Can your heir find the instructions?
3. Can they understand what needs to be done?
4. Can they technically execute the procedure?
5. Are there any unanticipated blockers?

Live test (optional)

• Ask the heir to describe what they would do
• Identify gaps
• Complete the documentation

8. FAQ - Frequently Asked Questions

Does my notary understand crypto?

Probably not in depth. Explain clearly that these are digital assets with significant value. Provide clear documentation. Some notaries specialize — seek one out if your estate is substantial.

Should I reveal my crypto holdings to my family now?

Not necessarily the exact amounts. But at least one trusted person must know that these assets exist and how to proceed in case of death. Total secrecy = total loss.

What if my crypto rises significantly in value after my death?

Inheritance duties are calculated based on the value at the date of death (or 6 months later, at the heirs' option). Subsequent appreciation does not affect the duties already calculated.

Can I bequeath my crypto to a charity?

Yes, cryptocurrencies can be bequeathed to charities recognized as public interest organizations, with the same tax benefits as other donations. Make sure the organization can technically receive crypto.

How do you handle a deceased person's crypto without any instructions?

A difficult situation. Steps:

1. Search all electronic devices
2. Look for hardware wallets, notes, documents
3. Check emails for mentions of exchanges
4. Contact identified exchanges with the death certificate
5. Engage a recovery specialist (costly, results not guaranteed)

Are crypto recovery services reliable?

Some are, many are scams. Red flags:

• Upfront payment required
• Guaranteed results promised
• Requests for access to other funds

Legitimate services: prior audit, success-based payment, verifiable reputation.

9. Crypto Succession Checklist

Follow this step-by-step plan to secure the future of your heirs.

Phase 1: Inventory

• List all wallets (hardware, software, paper)
• List all exchanges with access
• Document DeFi and staking positions
• Estimate approximate values
• Identify specific risks

Phase 2: Documentation

• Create the explanatory letter for heirs
• Document access procedures
• List trusted technical contacts
• Prepare emergency instructions

Phase 3: Security

• Back up seeds on durable media
• Separate seeds and instructions
• Encrypt digital documents
• Distribute geographically

Phase 4: Legal

• Mention crypto in the will
• Inform the notary
• Verify the applicable tax treatment
• Consult an attorney if the estate is substantial

Phase 5: Communication

• Inform at least one close person of the existence of the crypto
• Provide basic instructions
• Identify the technical contact
• Train if necessary

Phase 6: Maintenance

• Schedule annual review
• Update after changes
• Test procedures periodically
• Adapt to the evolving estate

Conclusion

Planning the succession of your cryptocurrencies is not a morbid act — it is an act of responsibility and love. It ensures that the wealth you have built will benefit those you care about, rather than vanishing into the digital ether.

Key principles to remember

1. Don't wait: Plan now, revise regularly
2. Balance security and accessibility: Too much security can be counterproductive
3. Document clearly: Your heirs are not crypto experts
4. Diversify methods: Don't put all your eggs in one basket
5. Involve professionals: For substantial estates

What you will leave behind

With proper planning:

• Your heirs will access your crypto estate
• They will understand what they own
• They will be able to make informed decisions
• Your legacy will be preserved

Without planning:

• Funds potentially lost forever
• Frustrated and powerless loved ones
• An estate evaporated

Don't let your negligence turn your digital wealth into ghost cryptocurrency. Act now.

Related Articles — OPSEC

• Stockage Seed Phrase Methodes Supports
• Opsec Crypto Securite Personnelle
• Wrench Attack Protection Crypto

Sources and References

1. Pamela Morgan - "Cryptoasset Inheritance Planning" (2018)
2. Conseil Superieur du Notariat - "Digital assets in succession"
3. Casa - "Bitcoin Inheritance Guide"
4. Unchained Capital - "Estate Planning for Bitcoin"
5. French Civil Code - Succession provisions
6. Code general des impots (General Tax Code) - Transfer duties
7. BOFIP - Tax treatment of cryptocurrencies
8. Chainalysis - "State of Crypto Report" (2024)
9. Notaires de France - "New forms of wealth"
10. Specialized crypto attorney - Consultations and case law

Related Articles

• OPSEC crypto - Guide de securite personnelle
• Stockage de seed phrase - Methodes et supports
• Attaques physiques - Se proteger du wrench attack
• Multisig 2-of-3 - Configuration pratique
• La Passphrase (25eme mot) - Strategies avancees
• Optimisation fiscale crypto en France