The best time to have bought was about a month ago when Bitcoin went as low as $5000 plus. Short term investors would have made profit from that investment by now. If bitcoin follows the same trend as last year, then long term investors can join the ride now and hold their horses regardless of the up and down movement of the coin and wait till it gets to the moon and beyond

"Wallets created in 0.16 and later are not compatible with versions prior to 0.16
and will not work if you try to use newly created wallets in older versions."

So what happens to assets in such wallets? Would they be lost or not?

Are you going to run your bounty program through any bounty hunting platform?