When he replies, "No, you didn't..." that's an implicit articulation of the lie, "I know best" which is one of the beliefs a person holds when they struggle with pride or arrogance, which is akin to or overlaps closely with the belief, "I am God."
At the same time, he's also implicitly accusing you of lying to him about having not told him for ten years about Bitcoin, even though you did, which means he doesn't trust you. But since you are trustworthy, it means he had fundamental trust issues with himself and/or others that he's projecting into you which likely trace back to family of origin issues with his father or someone close to him who violated his trust, which means he had unresolved personal issues he needs to sort out.
Healthy and functional people choose through humility to trust certain trustworthy people more than they trust themselves . But that you've hung out at least one hundred times over the last ten years, but he still doesn't trust you seemingly, speaks to the kind of relationship he has with you which indicates he's likely a taker, not a giver or reciprocator in the relationship.
In addition, if he literally can't remember you telling him about Bitcoin, it indicates memory impairment which could point to a pot addiction, since pot can impair the memory.
Or, he's literally just really, really stupid.