- https://www.bitcoinbrasil.com.br/o-que-e-bitcoin/
- https://bitcoin.org/pt_BR/faq
- https://guiadobitcoin.com.br/altcoins-um-guia-basico/
- https://portaldobitcoin.com/o-que-e-ico/
- https://www.youtube.com/channel/UCLJkh3QjHsLtK0LZFd28oGg
- https://www.youtube.com/channel/UCf2zJc6GrqehNJeUJCaeFRw
- https://www.youtube.com/channel/UCak-HWmXEqeC3KOjTN9Fr-Q
- https://www.youtube.com/channel/UCo1HuXNePrQVmQdmL0FoOuQ
- https://www.youtube.com/user/PortalUibo