Registered nodes and coarsened public records.

Public records show which hardware nodes are registered on Circle Arc (contract 0xbc8085c2b6fe6e0db05f169925c0b841828f4481), the RFC 6962 Merkle transparency log state, and whether verification checks passed. Simulated test nodes (sim-1, sim-2, sim-3) are labelled Simulated. Timestamps are rounded to the UTC hour and prompts are never logged.