<https://www.theblockcrypto.com/post/96021/coinbase-says-holds-bitcoin-btc-on-balance-sheet>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.theblockcrypto.com/post/96021/coinbase-says-holds-bitcoin-btc-on-bal...>