1. One the day demonetization was announced at 8PM, all jewelers were open till till 12 and sold gold with post dated delivery. 2. Till next few days, most ret

1. One the day demonetization was announced at 8PM, all jewelers were open till till 12 and sold gold with post dated delivery. 2. Till next few days, most retailers were doing backdated bills for large ticket items. 3. In India lot of people didn't had bank a/c. To allow them to convert old currency, people were allowed to convert cash upto 4k INR, by just showing any ID. Bank managers used stash of IDs they had collected over years, to convert huge amount of cash to new notes. Apart from this, local mafia used millions of poor to get the cash converted. These are common and publicly known methods.