1. Shared control and escrow models
Some darknet‑market designs, including those compared to TorZon, have experimented with multisig escrow where buyer, vendor and market each hold a key. Funds can only move when a threshold of keys agrees.
2. Operational overhead
Multisig setups are harder to back up, migrate and restore than single‑key wallets. Losing one key or misconfiguring the policy can lock funds permanently, which is why many markets still rely on simpler escrow designs.
3. Limited impact on legal risk
While multisig may reduce the risk of any single party stealing funds, it does little to change legal exposure: participating in criminal transactions remains illegal, regardless of wallet structure.