DOWNES, S. Recognising Achievement with Badges and Blockchain in a Connectivist MOOC. Journal of Learning for Development , [S. l.], v. 6, n. 3, 2019. DOI: 10.56059/jl4d.v6i3.348. Disponível em: https://jl4d.org/index.php/ejl4d/article/view/348. Acesso em: 19 apr. 2024.