What will be my proof of ownership for RTB? February 28, 2020 02:47 Updated You will receive your Confirmation of Sale (COS) via email within 30 days after issue date. Related articles Can I trade/sell Retail Treasury Bonds (RTB) and Retail Dollar Bonds (RDBs)? How? Can I order RTB from overseas? PREMYO BONDS 2 FAQs Are dividends guaranteed? How much is the broker’s fee for Premyo Bonds?