Route through your own wallet, mind the fee.
Do not send straight from an identity-checked exchange. Route through a wallet you control such as Sparrow or Electrum, copy the deposit address from your Osiris order, send with a sensible fee, and wait for confirmations.
Bitcoin fees swing with congestion. Overpaying wastes money and underpaying gets the transaction stuck for hours. Pick a fee that confirms within a reasonable window.
An exchange withdrawal sent straight to the market ties your name to the deposit. A fresh wallet in between, or a swap into Monero, breaks that link. The balance credits once confirmations land.