Brazil's Nemus has been given 15 days to provide proof of ownership of the land to which the NFTs are linked. The land is located in the Pauini, in the southern region of the rainforest, an area which is the size of Belgium. 

Federal prosecutors have accused the company – which claims to encourage eco-conscious customers to help preserve rainforest land − of pushing indigenous people in the region to endorse documents they could not understand. 

The sale of the NFTs was reported to authorities by leaders of the Apurinã people, who traditionally occupy the claimed indigenous territory of Baixo Seruini/Baixo Tumiã, in the Amazon, as stated by a press release published by the prosecutor's office.

The indigenous leaders claimed that Nemus' activities directly violated their rights, as stated in Convention no. 169 of the International Labour Organisation (ILO), which includes prior, free and informed consultation with potentially affected peoples...