The paper is primarily a theoretical proposal and lacks real-world testing or implementation. The feasibility and security of the proposed system remain to be validated in practice.
The system heavily relies on the Delay/Disruption-Tolerant Networking (DTN) model, which is still under development and might not be mature enough for reliable interplanetary communication.
Assumption of honest relays
The security analysis assumes at least one honest relay on each path, which might not be realistic in a decentralized and potentially adversarial environment.
The proposed system, involving PoTT, Lightning Network, and sidechains, is complex and requires significant coordination between different components, increasing the risk of errors and vulnerabilities.
The paper lacks empirical data to support the performance and feasibility claims. For example, the latency and bandwidth limitations of interplanetary communication are not thoroughly addressed with real-world measurements.