SharpLink Gaming files to raise up to $1 billion through stock offering, planning to convert proceeds into ETH for Ethereum treasury.News of Ethereum treasury spiked SharpLink's stock by 2,100% within a week, with Ethereum co-founder becoming chairman.SharpLink intends to use most proceeds to acquire Ether for Ethereum treasury and for general corporate purposes.Company highlights risks of CBDCs reducing demand for cryptocurrencies and ETH potentially being classified as a security.