<https://mvl.crypto-hunters.pw/why-are-there-different-types-of-blockchains-emerged-after-mvl#author>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://mvl.crypto-hunters.pw/why-are-there-different-types-of-blockchains-emerged-after-mvl>