At 4:33:37 PM, the Grayscale Cardano Trust ETF was the first to disappear. Seventy-eight seconds later, the Grayscale Hedera Trust ETF followed. At exactly 4:36:47 PM, the Grayscale Polkadot Trust ETF was withdrawn as well. AdvertisementCardano, Hedera, Polkadot: Already Weakened CasesThese three ETFs weren’t exactly in good shape before August 7. Grayscale withdrew the Grayscale Cardano Trust ETF, the Grayscale Hedera Trust ETF, and the Grayscale Polkadot Trust ETF in 190 seconds, under SEC Rule 477.