A double-blind marketplace is like a cloak-and-dagger bazaar where only essential details (like what’s being bought or sold) are shared, not personal identities. Bitcoin-based escrows—especially multisig arrangements—allow funds to be held until both parties verify completion of the deal. Neither side learns more than necessary, protecting privacy.

In practice, these marketplaces may run over Tor to hide IP addresses and rely on dispute arbitration if something goes wrong. The ‘double-blind’ aspect reduces the risk of targeted scams or harassment, but it can also attract illicit use if not carefully moderated. Nonetheless, it demonstrates how Bitcoin’s pseudonymous nature can foster privacy-centric commerce.