Shows TRX with BTT, subtracted or added to. Subtracting makes it in line with BitMEX futures. The option to add is considered for 'true value'. Airdrops, like new coin forks, can split value: a good example being BCHABC and BCHSV.
Getting TRX futures to match TRX on Binance is likely tied to the monthly airdrop rate as defined here: support.binance.com
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