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Same for those selling at 3000, 4000, 5000, 7000, 9000, etc - always giving bitfinex serious profits, while people were exchanging their btcs for vapor-tokens, and these BTC now can cover multiple times the USDT balance. Right?
If I understand your post correctly, you are making a mistake.
1. Total Tether issuance (USDT on OMNI + USDT on ETH) = ~2.3 billion $
2. Total BTC in Bitfinex cold-wallet = 140,443 BTC = ~1.63 billion $
Even if all these Bitcoin would belong to Bitfinex,
which they do not, they would
not be enough to cover all the outstanding Tether at the current Bitcoin price.
You also assume that all these Bitcoin belong to Bitfinex, which is obviously not true, because
these are mainly user funds. If people sold Bitcoin at 3000,5000 and so on the profits
may not have gone to Bitfinex, but to other users of the Bitfinex exchange.
Of course it is possible that I misunderstood your post or that Bitfinex
has substantial cryptocurrency holdings in other currencies than Bitcoin (e.g. big holdings of
ETH or some of the tokens that they list).
Random speculation:
Personally, I suspect that they obviously
acccumulate tokens like RLC or RCN before they list them on their exchange.
It is simply too easy to make money by buying up a random token and then making
profit after you list it on your exchange (https://pbs.twimg.com/media/DUT-ULkWsAA9Pxt.jpg:large).Bitfinex main income should theoretically be coming from trading fees and not from selling
Bitcoins directly.
...
Hmm, wouldn't everyone want to sell their Tethers and buy every coin they can with it and pump prices up even more?
This is exactly what many people including me predict what will happen in the case of a Tether collapse.
The prices of all cryptocurrencies on these exchanges will go completely parabolic, because of people
that desperately try to exchange their worthless USDT for another cryptocurrency.