Modèles de gouvernance familiale

Who Has Authority Over Digital Assets After the Owner Dies?

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A beneficiary may inherit a digital asset without gaining the power to move it. An executor may have legal authority over the estate but no access to the wallet. A trustee may be responsible for safeguarding the asset while an exchange, custodian or multisignature arrangement controls whether any transaction can take place. This gap between entitlement and operational control has become one of the most difficult parts of digital succession. Conventional estate planning usually assumes that once the correct legal representative has been appointed, banks, registries and custodians can identify the property and transfer it through an established process. Digital assets do not always follow that model. A bitcoin balance held through a regulated exchange may be recoverable after the executor supplies the required documentation. The same balance held in a self-custodied wallet can become permanently inaccessible when the private key or recovery phrase is lost. Tokens governed by a multisignature arrangement may require the cooperation of several signatories. Assets deposited in a decentralised protocol may be subject to smart contracts, lock-up periods or collateral obligations that continue after the owner’s death. The central succession question is therefore no longer simply who inherits the asset. It is who has the legal and technical authority to identify, secure, manage and transfer it.

Ownership, authority and access are different

Digital estate planning often treats these concepts as though they were interchangeable. Ownership determines who is legally entitled to the asset. Authority determines who may act on behalf of the deceased person or the estate. Access concerns whether that person can technically control the wallet, account or protocol position. A will may leave all crypto-assets to a child. Until the estate is administered, however, the executor may hold the authority to collect and manage those assets. The child is the ultimate beneficiary but cannot simply take them. Even the executor’s legal position may be insufficient when no one can locate the wallet or sign a transaction. The opposite problem can also arise. A relative may know the recovery phrase and therefore possess the technical ability to transfer the assets, but have no legal authority to do so. Moving them before the estate representative has been appointed could breach inheritance law, fiduciary duties or the rights of other beneficiaries. Possession of a private key is powerful because the blockchain generally accepts a valid signature without examining whether the person using it is an executor, beneficiary, thief or former business partner. Technical control can therefore exist without lawful entitlement. A defensible succession plan must align all three elements. The person expected to manage the asset after death should have an identifiable legal mandate, a secure route to access and instructions that are consistent with the will, trust and custody arrangement.

The custody model determines the first step

The practical process depends heavily on how the asset is held. Where crypto-assets are held through a centralised exchange or regulated custodian, the deceased person has an account relationship with an intermediary. The executor can normally notify the provider, prove the death and provide evidence of appointment. The provider will then apply its own procedures before permitting a transfer, liquidation or change of account ownership. This resembles conventional financial administration, although delays and jurisdictional complications remain possible. The provider may be incorporated in another country, apply different succession rules or require documents to be translated, notarised or recognised locally. Its terms of service may also restrict transfers or specify how claims from an estate are handled. Self-custody removes that intermediary. The owner controls the assets through one or more private keys, often represented by a recovery phrase stored separately from the wallet device. No institution can reset the credentials or override the blockchain when the owner dies. The estate may legally own the tokens, but the law cannot reconstruct a lost key. The assets remain visible at their public address and may retain substantial value, yet no transaction can be authorised. This is why self-custody changes the nature of succession planning. It reduces reliance on an external provider during life but transfers responsibility for continuity entirely to the owner and the arrangements they establish.

A private key is not an estate plan

Some owners respond to the access problem by giving a family member the recovery phrase or leaving it alongside the will. Both approaches can create new risks. A person who receives the key during the owner’s lifetime can usually move the assets immediately. The arrangement may therefore expose the portfolio to theft, coercion, family conflict or an unauthorised transfer. It can also make it difficult to establish whether the recipient was intended to receive the assets personally or merely to assist the executor. Placing the recovery phrase in a will is equally problematic. Wills may become accessible through probate procedures, and the document can pass through the hands of lawyers, court staff, family members and other parties. A secret capable of transferring the entire wallet should not be included in a document designed to explain how the estate is distributed. The safer approach separates legal instructions from access credentials.

The will or trust should identify the category of digital assets, appoint the relevant fiduciary and grant the authority required to administer them. A separate, secure record can explain where the wallets are located, how access is obtained and which technical or professional assistance may be needed. The access mechanism should be designed so that no single unauthorised person can use it during the owner’s lifetime, while the appointed fiduciary can activate it after death.

Executors need explicit authority

Traditional wording that grants an executor power over “all property” may be legally broad enough to include digital assets, but reliance on generic language can create unnecessary uncertainty. The estate documents should state clearly that the fiduciary may identify, access, secure, value, transfer and dispose of digital assets. The powers may also need to cover electronic records, online accounts, wallet devices, cryptographic credentials and communications with custodians or service providers. This is particularly important where privacy and computer-access laws restrict third parties from entering online accounts. A platform may distinguish between access to the financial asset and access to private communications associated with the account. An executor who can recover a custodial crypto balance may not automatically be entitled to read the deceased person’s messages or unrelated data. In the United States, most states have adopted legislation based on a framework governing fiduciary access to digital assets. It allows executors, trustees and other fiduciaries to manage many forms of digital property while giving greater protection to the contents of private electronic communications. The user’s explicit instructions and the provider’s own legacy tools can affect what the fiduciary is permitted to receive. Other jurisdictions rely more heavily on general succession, property, contract and data-protection law. Even where crypto-assets are recognised as property capable of passing on death, that classification does not compel a foreign exchange or technology company to release information without satisfactory proof of authority. Explicit drafting cannot remove every conflict, but it gives the fiduciary a stronger basis from which to act.

The inventory must explain more than what is owned

A conventional asset schedule might record that the owner holds bitcoin, ether and several tokenised investments. That is not enough to administer them. The inventory should distinguish between assets held on exchanges, assets held in self-custodied wallets and positions controlled through decentralised applications. It should identify the relevant providers, wallet addresses, devices, networks and legal entities without exposing the credentials needed to transfer the assets. It should also record whether any assets are staked, lent, pledged as collateral or locked in a smart contract. An executor who sees tokens at a wallet address may not understand that they support a loan that can be liquidated if the collateral value falls. A liquidity-pool position may be represented by a separate token. A claim to future distributions may depend on continued interaction with a protocol.

Digital assets can generate rewards, governance rights and tax obligations after the owner dies. The executor therefore needs enough information to understand not only the balance but also the function of each position.

Transaction history matters as well. The blockchain may show transfers but not necessarily the purpose of each transaction, the acquisition cost or the identity of the counterparty. Without supporting records, the fiduciary may struggle to value the estate, calculate gains or explain earlier movements to beneficiaries and tax authorities.

Multisignature arrangements can solve one problem and create another

A multisignature wallet requires more than one key to authorise a transaction. A family might establish a three-key arrangement in which any two keys are sufficient, with separate keys held by the owner, a trusted adviser and an independent custodian.

This reduces the risk that one lost or stolen key will compromise the entire portfolio. It can also create a controlled succession mechanism because the surviving signatories may help the estate recover access after the owner’s death.

The legal design must still be precise. The co-signers should understand whether they hold property, provide a security function or exercise fiduciary authority. Their ability to sign does not necessarily give them discretion over where the assets should go.

The arrangement also needs a procedure for death, incapacity, resignation and loss of a key. A plan that depends on a particular adviser or family member can fail years later when that person is unavailable, the relationship has deteriorated or the technology is no longer supported.

Multisignature custody is therefore not a substitute for succession documents. It is an operational layer that should implement the authority created by them.

Trusts can provide continuity when they hold control correctly

A trust can avoid some of the delay associated with administering assets held personally at death. When the trustee already holds the digital assets or controls the relevant custody arrangement, the death of the settlor does not necessarily interrupt legal ownership.

The trustee can continue safeguarding and managing the portfolio under the trust deed, subject to the interests of the beneficiaries. This may be useful for volatile assets that require prompt decisions, for family structures spanning several jurisdictions or where beneficiaries should not receive direct control immediately.

The benefit depends on whether the trust genuinely controls the assets.

Naming crypto-assets in a trust document does not transfer them. The owner must move the tokens into a wallet held under the trust arrangement, transfer the relevant custodial account where permitted or establish another legally effective mechanism. If the settlor remains the only person with the private key, the trust may face the same access problem as an estate.

The trust deed should also address who may approve transactions, how keys are held, what risks the trustee may accept and whether the trustee is authorised to retain highly volatile or technically complex assets. A professional trustee may otherwise conclude that immediate liquidation is the most defensible course, even when the settlor expected the assets to be held for the next generation.

Trust governance becomes particularly important where the portfolio includes staking, decentralised finance or governance tokens. The trustee needs authority not merely to preserve the asset but to operate within the systems attached to it.

Cross-border assets create competing claims to authority

Digital assets do not have a location in the same way as real estate or physical property. The owner may live in one country, the beneficiaries in another and the exchange in a third. The servers, legal entity and custody infrastructure may be distributed across several more.

Different jurisdictions may then answer the same succession question differently.

The law of the deceased person’s residence may govern the estate. The platform’s terms may select the law and courts of another jurisdiction. The place where a custodian holds the keys may influence how the asset is treated, while tax authorities can apply separate rules based on residence, domicile or the location of the service provider.

A grant of probate issued in one country may not be recognised automatically by a provider elsewhere. The executor may need a local court process or additional legal opinion before the account can be released.

The problem becomes more difficult when the owner used an account registered to a company, trust or nominee. The estate may inherit shares or beneficial rights rather than the digital assets directly. Authority then depends on the governance documents of that entity as well as the succession process.

International families should map these connections before death rather than leaving the executor to discover them during administration.

Authority must also cover incapacity

Death is not the only event that can make an owner unable to manage digital assets.

A stroke, accident or cognitive illness can leave the person alive but unable to use a hardware wallet, recall a passphrase or make decisions about a volatile portfolio. A will has no effect during life, so an executor cannot intervene.

The owner needs a power of attorney or equivalent incapacity arrangement that expressly covers digital assets. The appointed person must also have a practical route to access. Granting legal authority without arranging technical continuity repeats the same problem in another form.

Incapacity planning may require greater safeguards than succession planning because the owner could recover and resume control. The system should allow the fiduciary to act when necessary without permanently compromising the owner’s security.

Multisignature custody, institutional safekeeping or a carefully designed recovery process can help. The correct arrangement depends on the portfolio, the owner’s technical ability and the level of independence required.

The fiduciary should secure the assets before deciding what to do with them

Once authority is established, the immediate priority is preservation.

Devices, seed backups and account information should be secured before family members begin experimenting with them. Wallets may be moved to a new custody arrangement if the existing credentials could have been exposed. Exchange providers should be notified through their formal estate procedures, and unauthorised attempts to access accounts should be avoided.

The fiduciary must then identify outstanding obligations. Loans, margin positions, protocol risks and tax liabilities may require action before the assets can be distributed. Valuation should reflect the correct date and market, while transaction records should be preserved for later accounting.

Only then should the executor or trustee decide whether to retain, sell or distribute the assets in kind. That decision should take account of the governing document, fiduciary duties, volatility, beneficiary circumstances and the cost of continued custody.

A beneficiary capable of receiving listed securities is not automatically prepared to safeguard self-custodied crypto-assets. Transferring a wallet without adequate instruction may expose the inheritance to immediate loss. In other cases, liquidation may conflict with the deceased person’s clear intention or trigger unnecessary tax consequences.

The fiduciary needs discretion, but also a documented basis for using it.

A workable plan joins law with technology

Digital succession fails when legal and technical planning are completed separately.

Lawyers may prepare a valid will without knowing how the wallets are controlled. Technical advisers may create an elaborate recovery arrangement without considering who is legally permitted to activate it. Family members may receive partial information that gives them access but no authority, while the executor receives authority but no usable information.

A coherent plan should establish who inherits, who administers, how authority is proved and how access is released. It should identify the custody model, document the assets and provide for death as well as incapacity. The arrangements need regular testing as platforms, devices, balances and family circumstances change.

The objective is not to leave private keys openly available. It is to ensure that the correct person can obtain control at the correct time through a process that others can verify.

Digital assets can pass under a will or trust like other forms of property. Their administration is different because neither a court order nor a beneficiary designation can sign a blockchain transaction on its own.

After the owner dies, authority belongs to the person recognised by the relevant succession or trust framework. Control belongs to whoever can satisfy the technical and institutional requirements for moving the asset. A successful estate plan makes sure they are the same person—or that they are required to act together.