There are a variety of initiatives that promote CDR without specifying how the capture or sequestration are to be achieved - policies and reward systems focused on end-results without directing practitioners toward particular means. Implementation of such policies can lead to CDR achievements in which methods of CDR may be proprietary and undisclosed.
Because the incentive to remove carbon dioxide is provided without regard to how the results are achieved, the role of “measurement, reporting, and verification (MRV)” is paramount: only with accurate and reliable MRV can CO2 removal be known - theoretical considerations of feasibility based on specific technical approaches may be inapplicable.
Non-directive compulsion is often legislative. Examples are carbon taxing, LECCLA, and CDRLA – measures that reward end results and let technical optimizations be market-driven. Government-imposed cap-and-trade systems work this way also; establishing limits and markets for giving companies options to achieve the limits or better, or pay other companies for the emission reductions those companies can achieve. See EU Emissions Trading System (EU ETS)