Geographic Key Distribution for Family Reserves
Placing multisig signer devices across cities and countries reduces single-point-of-failure risk for family cryptocurrency reserves.
A family multisig arrangement with five signers sounds resilient. If all five devices and their recovery phrases sit in the same Seoul apartment, a fire, flood, or burglary compromises the entire arrangement at once.
Geographic distribution spreads risk across locations — but introduces coordination challenges that documentation must address.
Mapping Custodian Locations
During registration, we record each signer’s city, country, and the physical location of their device and recovery materials. Common patterns we document:
- Primary residence safe for the device; bank safe deposit box for recovery phrase
- Attorney’s office holding a sealed recovery copy for estate purposes
- Sibling in another city holding a backup device configured as a secondary signer
The register’s geographic distribution section makes these arrangements visible to all signers during annual reviews.
Remote Signer Coordination
International families often include signers in Seoul, London, Sydney, or Vancouver. Remote participation in key ceremonies requires identity verification steps and extended session time. We document which signers attended in person versus via secure video, and which sections they confirmed independently.
Concentration Risk Assessment
We flag when more than two signers share a postal code, when recovery phrases for multiple signers are stored in the same facility, or when a single family member holds both a signing device and another signer’s backup materials.
These concentrations are not always avoidable — but they should be conscious decisions, not accidents discovered during a crisis.
Practical Next Steps
Review your current signer map. If three or more custodians share a building, consider redistributing recovery materials before your next firmware update cycle.