jm xü©×À^ÄM#ëÙóº}Ü·²A¬Ù.v_òLªCheckpoints have been in the clients since forever. More frequent checkpoints is a kludge I expect to be replaced. Rented hash who gives a fuck about that red herring....
https://whatsonchain.com/tx/2e4d0cba4aff599d396880fc6039a6ba55a02f0f4f0214f1382ec111bac9dacd