Announce-Pull Blockchain Broadcasting in ICN

Multiple Interest packets requesting the same data are merged into a single Interest packet at intermediate routers. This consolidation ensures that data is requested only once per unique data item, eliminating redundant transmissions while maintaining complete data delivery to all nodes that need it.

Intermediate routers act as intermediaries that cache data and manage Interest packet aggregation. These intermediaries store received data packets and respond to multiple Interest packets without forwarding them upstream, reducing the burden on source nodes and minimizing redundant network traffic.

Instead of requiring a single globally common prefix for all nodes, the system allows each node to use its own unique prefix. This local differentiation eliminates the need for complex global prefix registration while still enabling in-network caching at each node's local level, maintaining synchronization efficiency without increasing deployment complexity.

Each node independently manages its own prefix and caching operations without requiring centralized prefix registration. Nodes self-configure their prefix information and perform local caching decisions, eliminating the deployment overhead associated with global prefix management while maintaining efficient data synchronization.

Data packets are signed with cryptographic signatures before being transmitted to the network. This preliminary security action allows intermediate routers and receiving nodes to verify data authenticity and legitimacy before forwarding or processing, preventing flooding attacks while maintaining efficient multicast distribution of valid data.

The system implements a feedback mechanism where nodes verify data signatures and provide feedback on data validity. This feedback loop enables the network to identify and block malicious data packets while allowing legitimate multicast forwarding to proceed efficiently, balancing security requirements with distribution performance.