Source: Cointelegraph.com NewsSome of Alipay’s mainland Chinese users saw ads inviting them to invest up to $137 daily in a fund with indirect exposure to a US spot Bitcoin ETF and Coinbase.Read MoreChina, Bitcoin, Alipay, Cryptocurrency, Payments, Bitcoin ETF, Coinbase, ARK Invest, ARKB, ARK 21Shares Bitcoin ETF, Huabao, Mainland China