Cross-Chain Infrastructure / illustrative case
Northbridge Network
A validator-attested messaging network with threshold authorization, custody contracts and destination-chain executors.
Component architecture
Source GatewayValidator QuorumMessage RelayDestination ExecutorCustody Vault
Research scope
Assessment boundaries.
Validator signatures
Replay protection
Custody boundaries
Withdrawal limits
Emergency shutdown
Risk classification
Key compromiseHigh
Replay protectionHigh
Withdrawal limitsLow
Assessment timeline
From architecture freeze to verified remediation.
W1
Scope and architecture freeze
W2
Manual and adversarial assessment
W3
Preliminary findings workshop
W4
Remediation implementation
W5
Correction verification
Remediation status: verified