IIRC those new BTCC 25
BTC Blocks are funded with coinbase transactions.
They come at a premium of roughly 5
BTC and you probably can't choose an address, but gotta pick from the ones they provide.
You however get the private keys to an address that was funded with a coinbase transaction.
Anyhow, that's the closest I can think getting to what you are searching for (or the only sane thing).
https://store.btcc.com/products/2016-n-series-bitcoin-blockYeap, I'm aware of those, just checking to see if something better comes up.
Part of that 5
BTC premium is the cost of creating/minting and shipping the coin to you. If you contact BTCC directly, they might be willing to have the coinbase transaction of one of their found blocks be sent directly to your address, possibly for a lesser premium.
There are very few solo miners out there today, so I would find it somewhat unlikely that anyone would come across this thread that would have an unspent 25
BTC coinbase transaction input in their (cold) wallet. If you are interested/willing to buy either a portion of or all of a 50
BTC "block" then I think the chances of you finding someone willing to do this would be greater.