I think I may ditch this first 'virdigris contaminated' brew now before bottling to avoid any risk. Will break my heart though.
This is crazy talk - the beer looks and tastes fine as you say, so yes tip it away...
Most houses have copper plumbing, I don't suppose many plumbers polish the inside of their pipes and joints before fitting them.
Your copper coil has gone shiny because beer wort is acid, just like water in soft water areas.