Sharing block templates

The proposed idea, when integrated with the GETDATA function, raises concerns about privacy and security within blockchain transactions. Specifically, it could enable users to access transactions that miners, despite poor propagation properties, have marked as valuable and intended to keep private. Notably, Antpool and its associated whitelabel services, along with MARA Pool, are identified as participants in such practices. Additionally, Rebar Labs is mentioned as offering a service that facilitates this kind of data access.

This situation underscores the complexities and potential vulnerabilities in the current framework governing blockchain transactions. The involvement of major mining pools and service providers like Antpool, MARA Pool, and Rebar Labs in these practices highlights a broader industry trend towards prioritizing certain transactions based on their perceived value, possibly at the expense of user privacy and network integrity. The mention of these entities suggests a need for greater scrutiny and potentially the development of new standards or protocols to safeguard against unintended privacy breaches and ensure a more secure and equitable transaction environment.