What chain is Brett on?

Could you please clarify which blockchain network Brett is currently operating on? I'm trying to understand his current position within the cryptocurrency ecosystem, and it would be helpful to know the specific chain he's involved with. Is he focusing on Ethereum, Bitcoin, or perhaps a lesser-known altcoin? Additionally, could you provide any insights into his activities or strategies on this particular chain? It would greatly assist me in comprehending his approach and the potential implications for the broader crypto market. Thank you for your assistance in this matter.