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>Can one person succeed at a serious and dedicated effort to withdraw thirty billion dollars USD from Bitcoin at once?

This seems pretty easy to test. Just go through all the exchanges and sum up their orderbooks. No need to actually test with 259684 BTC and lose a bunch of money through slippage.

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Most money in the orderbooks is from HFT MMs, if you start selling on Binance the bids on Huobi/OKEx/etc will dissappear, most likely before you can buy (correction: sell) all.

If you want to sell this much you really do not do it on screen (and definitely not at once). You get a big OTC desk to sell in tranches.

Assuming those order-books are legitimate.

@Bitfinexed (https://twitter.com/Bitfinexed) would argue that order books based on USDT (Tether) are not, and either the rug would be pulled or you will quickly find that you're holding ~2% of filled value (actual backed Tether)

There are many big trading firms trading billions a day willing to do the tether leg for you if you don't trust it yourself (they will take the risk), but a sale like this wouldn't happen at once anyway.

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