OKDOT is a voting voucher issued by OKX representing your staked DOT in Polkadot Parachain Slot Auctions on a 1:1 basis. You can convert DOT to OKDOT for liquidity during the lease period. At the end of the slot lease period, you will be able to convert your OKDOT to DOT on a 1:1 basis.
OKX offers Polkadot slot auctions for two lease periods and issues OKDOT as voting vouchers to users.
OKDOT2 is a voting voucher for projects with a lease period from 2022-03-11 to 2024-01-15, including Centrifuge (CFG) and Efinity (EFI).