[kenneth]

OTC desks are different than exchanges, and you won't be able to see their books. There are also trading algos meant to push things through the market without being noticed. Of course it comes at a cost, you'll usually pay a discount (up to 5% or so ) to unload a large amount of crypto.

Crypto is an unregulated wild west, so these OTC desks typically don't have BD licenses, might do prop trading and be the counterparty to your transaction and take your position on their books (and then try to unload it themselves at a profit), or might match trades with their own customer lists. It's typically a pretty low-tech operation running on chat rooms.

I've worked with a few of those firms.