Important News from Last Night and This Morning (October 19th-20th)

Platform X launched a username trading market, with scarce accounts potentially worth over a million dollars; Mt. Gox's repayment deadline is October 31st, with the remaining 34,000 BTC potentially entering the market; Binance's He Yi clarified that the Tongzhou Program is a relief fund, not compensation; and Vitalik released a GKR tutorial to optimize ZK proofs.