[Research] Bitcoin After Block Rewards : preventing miner's deviation when the Bitcoin rewards is zero

The email from Cameron addresses several critical assumptions and recommendations related to the game theory model outlined in Junhyuk's paper. First, Cameron critiques the realism of the assumptions made in the paper, particularly pointing out that the model's static nature regarding mining operations is not only unrealistic but also potentially detrimental as it could lead to increased costs and reduced security. This critique highlights a significant flaw in assuming that the difficulty of creating blocks alone ensures security, neglecting other potential threats like Sybil attacks which become more feasible when block creation is cheap.

Cameron further recommends a shift towards a more dynamic and holistic approach to modeling security within blockchain frameworks. He suggests incorporating the stake of the system as an essential factor in maintaining security, thereby advocating for a stake-dependent security model. Additionally, he proposes the adoption of a dynamic model of mining capacity that utilizes "dark capacity"—a reserve that can be activated as necessary. This approach aims to adapt to varying needs and conditions, potentially enhancing efficiency and responsiveness.

Lastly, the notion that block confirmation in the later stages of the game should depend on two main attributes—costliness of production and recognition by trusted parties—is introduced. This recommendation underscores the importance of not solely relying on inherent block difficulty as a security measure but also considering the network and community aspects, where trust plays a pivotal role in the acceptance and verification of blocks.

Overall, Cameron's insights call for a revision of the existing theoretical framework presented in Junhyuk’s paper to include more dynamic and comprehensive elements that consider both economic and social dimensions of blockchain security.