Custody and key management
Quorum approval
Also known as: m-of-n approval, four-eyes principle
Quorum approval requires a defined minimum number of authorized approvers, for example three of five, before a custody action executes. Applied to transactions, whitelist changes, and policy edits, it removes single points of human failure and encodes the four-eyes principle banks already apply elsewhere.
How rule-based governance uses quorums
A policy engine evaluates every request against rules: amount thresholds, destination whitelists, asset types, time windows, and the required quorum for each case. Higher risk means larger quorums and slower lanes; cold storage adds offline signing tokens to the quorum.
In Taurus-PROTECT the policy engine reaches down to the smart contract function level, so tokenization and custody actions follow one governance model.
Taurus-PROTECT Custody
Taurus-CAPITAL Tokenization
Taurus-PRIME Trading
Taurus-NETWORK Collateral