Celsius's estate is going after BitMEX, claiming the exchange wrongfully liquidated and seized 6,360 BTC — nearly $490 million — during the March 2020 crash. That's the kind of legacy claim that just won't die, resurfacing years later as estates dig through old wreckage for recoverable funds. Timing's rough too, landing right as BitMEX faces its own closure. Old crashes keep sending bills long after the charts recover.