Arnesh Dadhich enhanced observability in the hyperledger/besu repository by refining logging within TransitionUtils, focusing on scenarios where total difficulty (TTD) data may be unavailable. He adjusted the log level from WARN to INFO and clarified messages to explain TTD unavailability during transitions from Clique or Proof-of-Work to Proof-of-Stake, as well as during merge-at-genesis events. This Java-based code refactoring improved operator visibility and reduced ambiguity, enabling faster diagnosis during network mode changes. By targeting logging clarity and maintainability, Arnesh’s work supported smoother migration monitoring and more efficient incident response without increasing unnecessary log volume.