Target bounty: Scottcjn/rustchain-bounties#12442
RustChain is closest to DePIN networks like Helium, Hivemapper, Render, and IoTeX in that it turns physical infrastructure into a rewardable network resource, but its proof target is different. Helium proves useful radio coverage, Hivemapper proves road imagery collection, Render proves GPU job completion, and IoTeX focuses on device/identity/data coordination. RustChain's Proof of Antiquity proves that a real physical computer exists and keeps operating, with value weighted toward hardware age and uniqueness rather than maximum throughput.
The consensus distinction is important. Helium's proof-of-coverage model depends on hotspot placement, witness relationships, and radio propagation. That made coverage verifiable, but also created a Sybil surface: cheap hotspots could be clustered, spoofed, or deployed for token extraction instead of useful coverage. RustChain's six-check fingerpr