Interesting to read that nowadays employers ask this type of question I've always had a vision that e certain occasions "less is more" and I sense that this time it applies.

A blockchain can be imagined as a long chain of steel links, where each link contains an important piece of information, and all together form a solid and resistant piece capable of withstanding a lot of torque.Think of this as a multi-party signed entity where information is shared and with peculiarity that this information is publicly visible and accessible.All this without intermediaries and without third parties, we ourselves control the operations we do Each link is an important part and the information contained in them is virtually impossible and incapable of disappearing because it remains stored in each link of the chain.For a newcomer it can be difficult to understand this and I think the best way is to invite him to use it and experiment, which would clear up c one of the future questions and concerns.And regarding your job interview, I wish you success and if they answer you, I hope your stay in that company will be prosperous.