Why crypto estates can fail
The difficulty stems from the model explained in our guide to crypto wallets. A blockchain recognizes neither death certificates nor heirs. It accepts a valid signature. If no one can locate the necessary signing credentials, the assets may remain visible but unusable.
Conversely, someone who discovers a complete backup could transfer the funds before the estate is settled. Technical possession does not necessarily prove legal ownership. The plan must therefore separate information, access and authority.
Common mistakes include having no inventory, an unreadable backup, a forgotten passphrase or a wallet unknown to the family. Outdated instructions could also direct relatives to a service that no longer manages the account.
Bitcoin.org’s wallet security documentation highlights the importance of a transfer plan. Legal details must nevertheless be defined with a qualified professional in the relevant country, rather than inferred from how the protocol works.
Creating an inventory without exposing secrets
The inventory should identify the types of assets, blockchains, platforms, hardware wallets and any existing backups. It can include public addresses useful for verification, but does not necessarily need to contain the private keys. Its primary purpose is to provide an overview of the estate.
For each platform, record the service’s legal name, official contact address, whether enhanced authentication is enabled and any published inheritance procedure. Account-recovery methods should be protected separately. The associated email account also deserves particular attention.
For each self-custody wallet, specify the type of backup, whether a passphrase is used, the number of required signatures and the compatible software. A vague note such as “Bitcoin on hardware device” does not indicate whether multiple accounts, multiple seeds or an additional passphrase are involved.
Add the information needed for less straightforward assets, including tokens on several networks, locked positions and configuration documents. Relatives should be able to identify what requires specialist assistance without immediately receiving all the secrets.
Separating the will from access information
A will can name beneficiaries and the people responsible for specific procedures. Depending on local law, it may become accessible to several parties. Writing a seed phrase directly into it creates a risk that it will be copied and permanently preserved in official records.
A more cautious approach is to use legal documents to define rights and separate instructions to describe the technical process. Storage locations can be divided among suitable people or institutions. This arrangement must take into account their actual ability to intervene.
Inheritance law varies by country. A technical setup must not bypass rules applicable to heirs, taxes or estate administration. A local notary or lawyer should validate the structure when the value or complexity warrants it.
Do not assume that a document prepared for another jurisdiction will automatically be suitable. The titles of the people involved, their powers and the required documents may differ. A comprehensible procedure should state these limits rather than copy a foreign template without adapting it.
Seed phrases, passphrases and backups
A seed phrase backup should remain readable, protected and tested. A metal plate may withstand certain physical incidents better than paper, but it does not prevent theft. The choice of medium does not replace protection for the storage location and access methods.
If an additional passphrase is used, the instructions should explain that it exists and describe its role. The seed alone may open a different, sometimes empty, wallet. Heirs could then wrongly conclude that the assets have disappeared.
Complexity should be proportionate to the skills of the people involved. A procedure involving several fragments, devices and passwords may fail if no one understands it. Adding more components does not automatically improve resilience.
Avoid arbitrarily splitting a phrase into pieces without understanding the risks of recovery and exposure. Structured sharing methods and multisig policies require their own documentation. An untested, improvised method could lose funds instead of protecting them.
Multisignature and shared responsibility
A multisignature wallet requires multiple keys to spend funds under a defined policy. Control can be divided among the owner, a relative and a service provider. Losing one key does not necessarily result in lost funds if the threshold and the other elements remain available.
This architecture requires preserving the relevant configuration, including the corresponding descriptor or file, public keys and necessary derivation information. Seeds without the proper context can make recovery more difficult. The multisig wallet terminology in our crypto glossary helps explain this architecture.
The inheritance protocol published by Unchained illustrates one possible arrangement around its service. It is an example from one provider, not a universal model: costs, jurisdiction, terms and dependency must be assessed separately.
The allocation of responsibilities should also prevent excessive power before the relevant event. People holding the components do not all need to know the balances or be able to act alone. This separation must nevertheless remain compatible with practical recovery after the owner’s death.
Platform accounts and identity verification
With a platform account, an heir cannot simply recover a key. The service may request a death certificate, proof of status, a court order or inheritance document, and identification. The procedure depends on the contract, the entity involved and the applicable rules.
Download relevant statements periodically, as they can help with inventorying, valuation and tax analysis. Keeping all assets on one service may simplify some documentary procedures, but it maintains counterparty risk. Administrative convenience does not guarantee availability.
Do not ask relatives to impersonate the deceased. Using someone else’s credentials does not prove their right to act and could complicate the case. The official process should remain the reference for accounts held with a service provider.
Access to email, a phone or codes does not replace legal documents. Distinguish between information that allows contact with the service and information that provides technical access. The plan should explain this difference to the people who will carry it out.
What should happen in the first days after a death?
Start by securing the documents and devices without improvising any movement of funds. Record who accesses the relevant items and preserve evidence of the situation. Emotional urgency is not a reason to post backups in a family group.
Locate the inventory and identify the professional handling the estate. Rights should be clarified before technical access is used. If a specialist becomes involved, define their role and the information they may receive without automatically transferring all signing authority to them.
Be wary of unsolicited recovery offers. Someone promising to recover any wallet in exchange for an upfront payment may exploit the family’s vulnerability. A seed phrase should never be shared with a contact found through a messaging service or public comment.
If the inventory is missing, start with legitimate documents and clues: statements, devices, correspondence and known public addresses. The absence of a password does not immediately mean permanent loss. Seek an assessment before trying unknown software on backups.
Testing the plan without revealing the estate
A test does not mean giving the seed phrase to the heirs. It can verify that they know where to find the instructions, whom to contact and how to identify the components of the setup. A full restoration can be simulated with a test wallet containing a small amount.
The scenario should include practical difficulties: a missing document, an unavailable person, an old device or a closed service. A limited, documented fallback procedure is preferable to relying on a single person. Roles should remain understandable even if the owner is unavailable.
Review the plan after a wallet change, a new passphrase, a move, a marriage, a separation or the death of a custodian. Periodic checks remain useful, but they do not replace these event-triggered revisions.
Also plan for temporary incapacity. A standard power of attorney does not automatically provide the technical means to access a wallet, while technical access does not confer every legal power. A professional should help coordinate these two dimensions.
A transfer plan people can understand
The quality of a plan is measured by whether it can be carried out, not by the number of secrets or documents it contains. An inventory, instructions, backups and legal validation should form a coherent whole. The family should know what to do without being given uncontrolled access prematurely.
Managing private keys after someone dies therefore means protecting both rights and access at the same time. A simple, tested and updated procedure reduces the risk of improvisation. It enables the right people to act at the right time, within the framework that actually gives them that authority.
