Developed and integrated ONN Chain support into the blockscout/chainscout blockchain explorer, expanding multi-chain coverage and enhancing data visibility for ONN ecosystem users. Focused on API integration and blockchain development, the work involved updating chains.json to include ONNchain Mainnet configuration and displaying key chain metadata such as description, ecosystem, native currency, and explorer URL within the Chainscout user interface. Leveraging JSON for data management, the integration enabled direct access to ONNchain details without disrupting platform stability. This feature improved user discovery and ecosystem transparency, reflecting a targeted approach to extending explorer functionality while maintaining operational reliability throughout the release period.