SWARD, A.; VECNA, I.; STONEDAHL, F. Data Insertion in Bitcoin’s Blockchain. Ledger, [S. l.], v. 3, 2018. DOI: 10.5195/ledger.2018.101. Disponível em: https://ledgerjournal.org/ojs/ledger/article/view/101. Acesso em: 25 sep. 2022.