Bitcoin (CRYPTO: BTC) was trading slightly higher during Friday’s 24-hour trading session, ahead of the U.S. Securities and Exchange Commission’s expected approval of the first spot Bitcoin ETFs at the start of the new year. Ethereum (CRYPTO: ETH) was holding relatively flat heading into the weekend, while Dogecoin (CRYPTO: DOGE) was gaining some momentum to the upside, hovering slightly above Thursday’s closing price. The crypto sector has enjoyed a strong rally during the fourth quarter, with Bitcoin surging about 62% since the Sept. 30 closing price. Similarly, Ethereum has risen about 41% …