BlockFi, a crypto lender announced that it will no longer be accepting Grayscale’s GBTC shares as collateral. Followed by the news, the stock of GBTC (OTCMKTS: GBTC) collapsed 5% on Tuesday ending at $12.21. During the ongoing Bitcoin price correction, the GBTC stock has been on a freefall this year. The share price of Grayscale Bitcoin Trust (GBTC) has been corrected by nearly 65% year-to-date.