Legitimacy

One of the ideas for having shared rules for governance, is a decentralized self-amending constitution. One verified wallet can either cast a vote of their own or delegate their voting power through sharing a temporary secondary key to one of the nodes or wallets in the network.

Anybody can propose changes, and if enough people vote on it, it gets written in the constitution, which is essentially a decentralized ledger.

Illegitimate wallets would commonly be: duplicate wallets, deceased wallet holder, unreclaimable wallet, non-human wallet owner, etc. Except for that, you can collect and hoard BRN indefinitely while you're alive, but you would need to use it for daily necessities.