In this paper, we trace the social and material effects of a carbon verification encounter in Timor-Leste. Foregrounding the relational historicity of these resource materialities, we inquire into the disorientating but potentially generative place-based effects of carbon offsetting. We unpack carbon's elusive and unruly materiality through our participation in a verification event connected to a reforestation and carbon-offsetting program that encourages individuals and organisations from Australia to compensate for their greenhouse gas emissions by purchasing carbon credits from subsistence farmers in Timor-Leste. We interpret this making, or conjuring, of carbon through interactions between technical experts, program managers, staff, and participants over a 4-day audit of the program and, with the benefit of subsequent interviews with farmers, examine how the opacity of the carbon credit's materiality and its measurement leads to community scepticism and demands for greater methodological clarity and oversight. At the same time, we take issue with critics of market-based conservation programs who assert that carbon offsetting leads inevitably to severe adverse impacts for local communities. Activating a generative understanding of the economic logics of ‘commodity indigenisation’ through attention to the ‘cultural biographies’ or life cycle of things, we evidence fluid movements: complex socio-natural relations and moral economies that humanise nature to reveal and potentially reconfigure the otherwise alienating effects of carbon commodities and their socio-natural technical complex.