8 February 2025
Multisig Inheritance: Coordinating Co-Signers Across Time Zones
When signing keys are held by family members in different countries, your estate record must address communication protocols and quorum requirements.
Multisignature wallets distribute signing authority across multiple key holders. This improves security during your lifetime but complicates inheritance if co-signers are scattered geographically or unaware of their role.
Document Each Signer’s Role
Your record should identify every co-signer by name, relationship, contact method, and the specific key they hold. Include backup contacts in case a co-signer is unreachable.
Quorum Requirements
A 2-of-3 setup requires any two signers to authorize a transaction. Your heirs need to understand that one unavailable co-signer does not necessarily block recovery — but they must know which combinations satisfy the quorum.
Time Zone Coordination
We recommend including a suggested communication sequence in your record: whom to contact first, expected response windows, and escalation if no reply within 72 hours. For international co-signers, note preferred contact hours in local time.
Legal vs. Technical Authority
A co-signer who is also your attorney may have different obligations than a family member who holds a key. Clarify whether each signer is expected to participate in recovery decisions or merely provide their signature when requested by the executor.
Multisig estate records prepared at System Birch Way include a coordination flowchart tailored to your specific signer arrangement.