BNB Chain, launched by crypto exchange Binance, has completed the burn of over $500 million worth of its native BNB tokens as part of a broader program, it said Tuesday. Token burn refers to the process of permanent deletion of coins from their circulating supply. More than 100 million BNB, or half of its total supply, are intended to be removed from circulation through a burning process and to eventually keep only 100 million BNB in circulation. BNB was up nominally in the past 24 hours, trading at $300 on Tuesday morning.