Remove Validator via Multi-Sig
Remove a validator using Safe wallet multi-sig approval
Removing a validator is a significant operation that permanently removes them from your L1's validator set. This guide covers the multi-sig process for safely removing validators.
When to Remove a Validator
Common reasons for validator removal:
- Decommissioning: The validator is being permanently shut down
- Performance Issues: Persistent poor performance or downtime
- Security Concerns: Potential compromise or suspicious behavior
- Governance Decisions: Consortium membership changes
- Resource Optimization: Reducing the validator set size
Important: Validator removal is permanent. The removed validator's node will no longer participate in consensus once the process completes.
Prerequisites
- ✅ The validator must be in Active status
- ✅ Access to your Safe wallet with required signers
- ✅ The validator's Validation ID
- ✅ Consider the impact on your validator set's total weight
Phase 1: Initiate Validator Removal
Identify the Validator
Get the Validation ID of the validator you want to remove:
- Use the Query Validator Set tool
- Check your validator management records
- Reference previous transaction history
Access Your Safe Wallet
- Navigate to wallet.ash.center
- Connect your wallet
- Select your Safe
- Go to "New Transaction" → "Transaction Builder"
Configure the Transaction
| Field | Value |
|---|---|
| To Address | Your PoA Manager address |
| Value | 0 |
| Contract Method | removeValidator |
Parameters:
- Validation ID: The unique identifier of the validator to remove
Review Carefully
Before submitting:
- ✅ Confirm the correct Validation ID
- ✅ Ensure you're not removing a critical validator
- ✅ Verify the remaining validator set has sufficient weight
- ✅ Communicate with stakeholders about the removal
Submit and Collect Approvals
- Submit the transaction
- Share details with other signers
- Wait for required approvals
- Verify each signer understands what's being removed
Execute the Transaction
Once threshold is reached:
- Execute the transaction
- Wait for confirmation
- The validator status changes to PendingRemoved
- A Warp message (weight = 0) is sent to P-Chain
Phase 2: Complete Validator Removal
Wait for P-Chain Processing
The P-Chain processes the removal and returns a signed confirmation with valid = false.
Prepare Completion Transaction
In your Safe wallet:
- Create a new transaction
- Target your PoA Manager
- Call
completeValidatorRemoval - Provide the message index
Collect Approvals and Execute
- Submit the completion transaction
- Collect signer approvals
- Execute when threshold is reached
Result: The validator is permanently removed from the validator set.
Post-Removal Verification
After completing the removal:
- Query Validator Set: Confirm the validator no longer appears
- Check Total Weight: Verify the remaining weight is sufficient
- Monitor Network: Ensure consensus continues smoothly
- Update Documentation: Record the removal for audit purposes
Impact Considerations
Before removing a validator, consider:
Total Weight Threshold
Your validator set needs minimum weight for churn operations. Removing too much weight can impact:
- Future validator additions
- Weight changes for remaining validators
Network Resilience
- Small validator sets: Removing validators may reduce fault tolerance
- Large sets: Impact is typically minimal
Validator Balance Recovery
The removed validator's remaining P-Chain balance will be returned to the Remaining Balance Owner addresses specified during the original registration.
Emergency Removal
In emergency situations where you can't wait for multi-sig approval, remember the P-Chain Disable option:
- The Disable Owner can directly disable a validator on P-Chain
- This doesn't require multi-sig approval
- Weight still counts, but the validator is inactive
- Full removal still requires the multi-sig flow later
Complete Removal Flow
Chapter Summary
Congratulations! You've completed the multi-sig governance course. You now know how to:
- ✅ Deploy a Validator Manager on C-Chain
- ✅ Create and configure a Safe/Ash multi-sig wallet
- ✅ Deploy and configure a PoA Manager
- ✅ Transfer ownership through the governance chain
- ✅ Perform all validator operations with multi-sig approval
This multi-sig setup provides secure, auditable governance for your permissioned L1's validator set.
Is this guide helpful?
