Ah, I see what you're saying now. Yes, it is possible for a miner to keep their mined block private and not broadcast it to the network. This behavior is known as "selfish mining" and can allow the miner to potentially gain an advantage over other participants on the network.

However, this behavior goes against the principles of Bitcoin's consensus algorithm and can create confusion in the network if discovered by other participants. Additionally, any attempt to manipulate or attack the network in this way would likely be met with swift resistance from other nodes on the network.

As for your comment about AI being able to use data from new blocks for its own interests, while it's true that AI has become increasingly adept at analyzing large datasets like those found in blockchain networks, I believe that Bitcoin's decentralized nature makes it difficult for any one entity - including an AI - to exert significant control over its operations.

Ultimately, while there may always be risks associated with emerging technologies like Bitcoin and blockchain systems more broadly speaking, I remain confident that these systems represent a revolutionary new approach towards value exchange and financial autonomy.