From their website – Block.one is a global leader in high-performance blockchain software. In June 2018, the company published the EOSIO blockchain protocol, and has since continued to develop and optimize the open-source software for companies and developers to build enterprise-level blockchain solutions.
Block.one developed the EOS coin. Their cryptocurrency – EOS is the 6th largest (in capital) cryptocurrency at this point. Their ICO (Initial Coin Offering) broke all crypto records in initial funding. Their year long offering brought in a cool $4 Billion. That is Billion with a B.
GoDaddy was credited with brokering this monster domain transaction.