No, it could be disproven. Take a high-energy gamma ray, and have it undergo pair production, creating an electron and a positron. Capture both in the same Pe

No, it could be disproven. Take a high-energy gamma ray, and have it undergo pair production, creating an electron and a positron. Capture both in the same Penning trap, then let them annihilate. This would result in a loop that is disconnected from any other electrons, showing that the electron/positron in the loop is distinct from other electrons.