Managed Self-Custody
A managed self-custody Bitcoin vault for long-term holders.
Three private keys. Two required to sign. You hold two keys. SimplB holds one as a recovery and co-signing layer. SimplB cannot move your Bitcoin unilaterally.
Key Points
What the SimplB Bitcoin Vault is
| Structure | 2-of-3 multisignature vault (two signatures required to move Bitcoin) |
| Key distribution | Client holds two keys: one active hardware wallet, one in cold storage. SimplB holds one co-signing and recovery key. |
| Custody model | Non-custodial. SimplB does not take unilateral control of client Bitcoin. |
| Jurisdiction | South Africa. FSCA-aligned. SimplB operates as a Juristic Representative of CAEP Asset Managers, FSP 33933. |
| Inheritance | Estate-planning aware. Vault documentation designed for heirs and executors. |
| Asset class | Bitcoin only. No other crypto assets. |
Why Managed Self-Custody
The gap between exchange custody and going it alone
Most South Africans who move beyond exchange custody face a difficult choice. DIY self-custody puts full responsibility on the holder: generating keys correctly, storing them safely, planning for death or incapacity, and never making a single irreversible mistake. Done well, it works. Done poorly, Bitcoin is gone permanently.
Managed self-custody sits between full exchange custody and going it entirely alone. The SimplB Bitcoin Vault gives clients direct control of their Bitcoin through a 2-of-3 multisig structure, while SimplB provides setup support, ongoing co-signing assistance, and inheritance documentation. You hold two keys. SimplB holds one as a recovery and co-signing layer only.
This structure is designed to reduce single-point-of-failure risk. If one key is lost or damaged, the vault can still be recovered using the remaining two. No single party holds enough keys to move Bitcoin without the other. SimplB does not take unilateral control of client Bitcoin at any point.
The vault is FSCA-aligned and operates within the SimplB compliance framework. Onboarding is FICA-compliant and exchange-control aware. Vault documentation is prepared with estate planning in mind, so that heirs and executors have a clear path to recovery if the client dies or becomes incapacitated. This is managed self-custody Bitcoin done properly for South African holders.
The Problem
Holding Bitcoin on an exchange is not holding Bitcoin
When your Bitcoin sits on an exchange, you hold a claim. The exchange holds the keys. If the exchange is hacked, becomes insolvent, or freezes withdrawals, you are an unsecured creditor with no direct access to the Bitcoin itself. This is not a theoretical risk. South African Bitcoin holders have experienced exchange failures directly.
Self-custody means holding the private keys yourself. The Bitcoin Vault South Africa needs is one that combines genuine key ownership with professional setup, legal documentation and ongoing support. That is what the SimplB Vault provides.
The vault is designed to reduce counterparty risk. It is not marketed as risk-free. Bitcoin carries volatility and technical risk. The vault addresses the specific risk of third-party key control by ensuring the client holds two of the three required keys at all times.
How It Works
Three steps to a managed self-custody Bitcoin vault
01
Onboarding and setup
FICA-compliant verification is completed first. SimplB then works with you to set up the 2-of-3 multisig structure and configure your two hardware wallets correctly.
02
Key distribution
You hold two keys: one active hardware wallet for day-to-day co-signing, one in cold storage as a backup. SimplB holds the third key as a recovery and co-signing layer only.
03
Inheritance documentation
SimplB prepares vault documentation designed for your heirs and executor. If you die or become incapacitated, there is a documented recovery path that does not depend on your memory or availability.
Who It Is For
The SimplB Vault is built for serious long-term Bitcoin holders
01
First-time self-custody
You have Bitcoin on an exchange and want to move it into proper self-custody. You want professional setup and a structure that is hard to get wrong.
02
Larger holdings
Your Bitcoin position is large enough that a single hardware wallet or a single point of failure is no longer acceptable. You want a redundant, documented structure.
03
Estate planning
You want your Bitcoin to reach your heirs intact. Standard self-custody leaves no clear recovery path for an executor. The vault includes documented inheritance procedures.
What You Get
Everything included in the SimplB Vault
2-of-3 multisig setup
Full vault configuration using battle-tested multisig software. Correct setup is verified before any Bitcoin is deposited.
Hardware wallet guidance
SimplB recommends appropriate hardware for your two client keys and assists with correct initialisation and backup procedures.
FICA-compliant onboarding
All document collection and verification is handled before vault setup begins. South African regulatory requirements are met from day one.
Inheritance documentation
Vault documentation prepared with your executor and heirs in mind. Includes recovery instructions that do not require you to be present or alive.
Co-signing support
For transactions that require SimplB’s co-signing key, SimplB provides timely support. The client always co-signs with their own key first.
Exchange-control awareness
SimplB explains how South African exchange-control rules apply to your vault and Bitcoin holdings. This is not exchange-control advice. Individual circumstances must be reviewed.
Frequently Asked Questions
Common questions about the SimplB Bitcoin Vault
Can SimplB move my Bitcoin without my permission?
No. The 2-of-3 multisig structure requires two keys to sign any transaction. SimplB holds one key. You hold two. SimplB cannot move your Bitcoin unilaterally. This is the core property of the collaborative custody model.
What happens if I lose one of my keys?
If one key is lost or damaged, the vault can still be accessed and recovered using the remaining two keys. You hold two keys precisely to provide redundancy. Losing both client keys simultaneously would require SimplB’s recovery key, and a documented recovery process is in place for this scenario.
What happens to my vault if SimplB ceases operations?
You hold two of the three keys. With two keys, you can move your Bitcoin independently without SimplB’s involvement. The vault documentation includes instructions for this scenario. You are not dependent on SimplB’s continued operation to access your Bitcoin.
Is the SimplB Vault suitable for inheritance planning?
Yes. Inheritance documentation is a core part of the vault service. SimplB prepares recovery instructions designed for your heirs and executor. This is not legal or estate planning advice. Individual circumstances differ and a qualified professional should be consulted for your specific estate plan. For more detail, read the article on what happens to your Bitcoin when you die in South Africa.
How does the vault relate to FICA and exchange control?
FICA-compliant onboarding is required before any vault is set up. SimplB is exchange-control aware and explains how South African rules apply to your situation. This is not exchange-control or legal advice. Individual circumstances must be reviewed with a qualified professional.
How does the SimplB Vault compare to standard self-custody?
Standard self-custody typically means one person holding one set of keys on one device. A single mistake, fire, theft or health event can make the Bitcoin permanently inaccessible. The SimplB Vault adds a second key you control (in cold storage), a third recovery key held by SimplB, inheritance documentation, and professional setup verification. The vault is designed to reduce single-point-of-failure risk while keeping the client in direct control. For a technical comparison, see the guide on multisignature Bitcoin custody.
Get Started
Ready to move your Bitcoin into managed self-custody?
Talk to James about your Bitcoin holdings and find out if the SimplB Vault is the right structure for you.
Written by James Caw, Founder of SimplB. James has helped South Africans understand, buy and secure Bitcoin since 2015. SimplB operates as a Juristic Representative of CAEP Asset Managers, FSP 33933. Last updated: May 2026.
This article is for general educational purposes only and does not constitute financial, legal, tax or exchange control advice. The information reflects the regulatory position as at the date of publication. Your individual circumstances may differ and you should seek qualified professional advice before making any decisions.