Secure your Bitcoin. Protect your family.
Institutional-grade multisig self-custody, paired with estate planning that's legally sound and cryptographically enforced.
What happens to your Bitcoin when you die?
Billions of dollars in Bitcoin are permanently lost because holders die without succession plans.
Traditional wills don't address custody mechanics, private keys, or multisig structures. Executors are left with no way to access self-custodied assets.
Existing online will platforms don't understand crypto. Crypto platforms don't understand estate law. The gap costs families everything.
of crypto owners have not shared their private keys with family.
of digital asset holders have included crypto in their estate plans.
in Bitcoin estimated permanently lost to date.
Two layers. One unbreakable system.
Multisig Self-Custody
Secure 2-of-3 or 3-of-5 multisig wallets where keys are distributed across you, BlockByte, and a nominated third party. No single point of failure. No exchange risk.
Digital Asset Estate Planning
Legally reviewed estate planning paperwork - generated by our platform, reviewed by our partner succession law firm.
- Digital Asset Directive (for clients without a will)
- Digital Asset Codicil (for clients with an existing will)
- Solicitor Briefing Pack (for your lawyer)
- Executor Process Guide (for the person who'll manage your estate)
We sit down with you and your advisers and explain the options, so you can choose a self-custody structure that fits your family, your risk appetite, and your estate plan.
From conversation to cryptographic enforcement, in four steps.
Tell us about your situation
Do you have a will? Who is your executor? We ask the right questions in plain English.
Set your succession plan
Nominate your digital asset executor, allocate beneficiaries, and set release conditions.
We generate the documents
Your Directive or Codicil is generated and reviewed by our partner succession law firm.
Print, sign, and you're protected
Sign in front of two witnesses. Your multisig custody enforces your wishes cryptographically.
Your estate plan isn't just documented. It's enforced.
The multisig architecture doesn't just record your wishes; it cryptographically enforces them. Executors cannot move funds unilaterally. Beneficiaries cannot access without verification.
Built for serious holders.
- Bitcoin holders in self-custody who need a succession plan
- SMSF trustees with significant digital asset holdings
- High-net-worth individuals who want institutional-grade security
- Anyone holding Bitcoin on an exchange who wants to take control
- Solicitors and estate planners advising clients with crypto
Estate planning documents reviewed by a partner succession law firm.
Complex scenarios - testamentary trusts, family offices, international assets - are referred to our partner firm for bespoke advice.
Custody and estate planning questions
- What is the difference between custody setup and estate planning?
- Custody setup decides how your Bitcoin is secured today - which keys exist, who holds them, and how funds are moved. Estate planning decides what happens on death or incapacity: the inventory, the digital asset directive your solicitor references, and the executor instructions. Doing one without the other leaves an obvious gap.
- Does BlockByte hold a key to my wallet?
- No. We are strictly non-custodial and clients retain sole control at all times. We explain the options, guide you through key generation and show you how to document the recovery path, but we never hold or have any means of accessing client keys or seed phrases.
- Which multisig structure do most clients use?
- 2-of-3 covers most individuals and families with the least operational overhead. 3-of-5 suits larger holdings, family offices, or arrangements involving multiple decision-makers and locations.
- Who reviews the estate planning documents?
- A partner Australian succession law firm reviews the documentation so the technical and legal sides line up. BlockByte does not draft wills or provide legal advice - your solicitor prepares and executes the legal instruments.
- How long does the process take?
- Most engagements move from discovery to a documented custody structure and directive within a few weeks, depending on how quickly devices, key locations and your solicitor's review can be arranged.
- What happens if I lose one of my keys?
- In a properly designed multisig, losing one key is survivable - funds remain recoverable with the remaining quorum, and the structure can be rotated. That is the core reason we do not recommend single-signature custody for meaningful holdings.
Protect your Bitcoin and your family.
A 30-minute consultation to map out your custody and succession needs.