Sixty Six Capital (CSE: SIX, OTC: HYHDF) has entered a 12‑month call option agreement with K33 Holding AS, giving upside exposure to up to 200 BTC above a strike price of US$100,000 per BTC. The company sold its Purpose Bitcoin ETF units, repaid CAD 2,963,974.4 of financing and plans to use remaining proceeds to fund…