Cryptocurrency bulls believe the SEC's approval of the first U.S. bitcoin ETF will help propel BTC above $100,000 this year. Investors cite the ETF expanding investor access and an upcoming technical event called "halving" driving gains. Anthony Scaramucci forecasts BTC hitting $100,000, comparing the approval to gold's 2004 ETF, boosting it 556% since. BTC more than doubled in price last year amid speculation of less hawkish Fed policy boosting risk assets. The halving and increased adoption are cited as factors that could accelerate BTC to new all-time highs.