I don't understand, why does the cannabis industry need blockchain? In the US, legalization of marijuana is not an issue of records and verification but of stigma and that marijuana is currently labeled a Schedule I Controlled Substance. There are states that have legalized marijuana, but it is still illegal federally, can't open a business bank account due to AML laws. In the states that have legalized it, they sell marijuana, today, without blockvhain.
You're getting it wrong, please read the whitepaper or at least have a look at one of those amazing Youtube videos so you'll understand.
Hell, you say "blockchain" and "cannabis" and 90% of the readers think they can smoke Ethereum.