According to @udiWertheimer, a new concept called 'transactionless Bitcoin' is being discussed, where users write down BTC transfer instructions on paper, sign them, and physically send them to recipients, who then redeem the BTC at banks. This method could offer enhanced security and a novel approach to offline Bitcoin transactions, potentially impacting how custodial services and cold storage solutions are designed. For traders, this highlights emerging trends in Bitcoin security protocols and could influence future adoption rates and market sentiment. (Source: @udiWertheimer on Twitter)