What 2 of 3 multisig escrow actually does on BlackOps, how a dispute is weighed and decided, and the single action that removes the whole protection at once.
Escrow is why somebody you have never met ships before being paid. On BlackOps it is 2 of 3 multisig, which means the payment sits in an address needing two of three keys to move.
You hold one key, the vendor holds one, the market holds one. The vendor can see the order is funded and cannot reach the money, and the market cannot quietly reassign it. That split is the whole protection.
Fund the order, the coin locks into escrow, the vendor ships, and when the package arrives and matches you confirm receipt. Your key with the vendor key releases the payment and the order closes.
Open a dispute instead of confirming. The market key becomes the deciding vote and staff weigh what each side shows against the vendor record. A short factual case with dates and an order reference beats a long argument every time.
Escrow protects the payment attached to an order. It does nothing for a balance you left on the market outside one, which is the largest single category of loss around markets generally. Deposit for the order in front of you and withdraw the rest, and the protection you are relying on actually covers the money you have at risk.
It also does not make a seller reliable. A vendor can be perfectly honest and still ship late, or ship the wrong thing, and escrow only gives you a route to argue about it afterwards. Reading a seller record before ordering is the part that reduces how often you need that route at all.
Sellers ask because escrow ties up their working capital until you confirm. That is a real cost to them and an understandable request from an established vendor with hundreds of clean orders behind them. From a young shop, the same request is the standard opening move of somebody who does not intend to ship. Since you cannot tell the difference reliably, treating it as a blanket policy is simpler and costs you nothing.
The whole path from a clean Tor Browser to a confirmed delivery on BlackOps, in the order you actually do it, with the mistakes that catch people marked out.
How to buy Monero, hold it in a wallet you control and fund a BlackOps order so the deposit lands the first time without a shortfall or a missing payment.
The account setup that makes a stolen BlackOps password useless, and the storage habits that keep you from locking yourself out.