Freeze authority is the on-chain power to halt a token's transfers for a given account or globally. Issuers keep it on regulated tokenized assets because compliance regimes can compel freezing: a court order, a sanctions listing, an enforcement action against a holder.
It is the clearest reminder that 'on a blockchain' does not mean 'beyond the law' - a token with a live freeze authority carries issuer-side legal exposure by design, and an asset page should say so in those words.
Freeze authority is a stated fact per asset, shown in the diligence block beside mint authority. Regulated tokenized-equity forms carry it; pure crypto assets generally do not have one to carry.
Every term behind the rails, the assets, and the settlement.