OPTC has completed the contract replacement on February 29, 2020. The old contract address is no longer supported for use. Please do not deposit tokens to your Boboo account with the old contract address .
OPTC new contract address：0x18752717F429Daa1Ea58eB41505C23fa2E483D4D
For the upgrade of new contracts from the old contract, please contact OPTC project customer service.
OPTC telegram customer service：https://t.me/Kazakhstan_OpticalNetwork