CoinDesk has viewed a letter dated Dec. 29 by the Reserve Bank of India (RBI) Governor Shaktikanta Das to staff that said the usage of the e-rupee (CBDC) “exceeded the milestone of 1 million transactions in a day on Dec. 27, 2023.” A separate letter from one of the banks participating in the e-rupee pilot said it had been encouraged it to deposit employee funds and benefits using the CBDC, rather than use the existing fiat currency.