Any CUB or POLYCUB in any form is eligible for the burn / drop

The nuances of how the airdrop happens will be released in a (lengthy) blog post

But the point in the post is that anything that contributes to the total supply (including locked tokens) is eligible for the drop

It will involve some complexities for certain of the locked tokens. xPOLYCUB has it's own token that represents it, so if you burn those, then it's going to be eligible at the current xPOLYCUB/pCUB ratio

For the sake of complexity, we didn't include every edge case in the blog post. But every POLYCUB or CUB will be eligible. No matter where it is held