Must not have been on the blockchain

from here and here

I imagine if the job offers had been on the blockchain, rescinding them would have been a lot more complicated what with it being an immutable public ledger. Perhaps they would have had to fork the project in order to invalidate the transation? Although that hasn't always gone to plan in the past and it would get pretty tedious if they had to do it with any regularity. Maybe they would have used some kind of smart contract as an employment contract (assuming they even use employment contracts rather than being an at will employer).