This means he or she will be generally knowledgeable about major issues within the blockchain industry. He or she should be able to intelligently discuss common themes including:
The legality of ICOs, security tokens, and stablecoins;
Whether your blockchain project is best formed as a for-profit corporation or nonprofit foundation;
Crypto tax issues that arise from buying and selling cryptocurrency;
Intellectual property right matters, including those relating to the use of open source copyright;
KYC AML matters that arise not just for exchanges and money services businesses, but seemingly all crypto-related businesses;
Different regulatory regimes in places like the US, Malta, Switzerland, etc.; and
The hundreds of other matters that regularly arise in the course of running a blockchain-related business.