Due to Tronscan not supporting subdirectory now. Please follow this guide to flatten your contract files first, and then verify on Tronscan again.
1. Flatten the contract code with TronBox: Flattening Your Contracts.
2. Update the License-Identifier:
- Please manually remove License-Identifier incase there are multi identifiers in the flattened file. Learn more at Removing Duplicated License-Identifier.
- Users can choose to add the desired License-Identifier, such as MIT, 0BSC, etc. This step is not necessary.
3. Verify the Contract: Upload `flattened-contract.sol` file to Tronscan, select the parameters and perform contract verification.
For more details about TronBox, please refer to TronBox Official Website.