can somebody please tell me how Cardano defends against exactly the following long range attack scenario:
Please correct me if I’m wrong, but I saw in the videos of IOHK and in the whitepapers, that they always assume within the security proofs of their protocols, that an honest party stays honest for the whole time, which is simply not the case in the real world. Just watch the Cardano whiteboard of IOHK there you can clearly see that they assume that within their proofs. Lets assume 60% are honest and are not creating two blocks or more at one timeslot (nothing-at-stake), then after some amount of time exactly those 60% decide now to unstake and exchange all their coins for fiat. Now these 60% are highly incentiviced to create a fork in the past (double-spend) which is the natural thing to do for those parties and they will succeed (60%). Now all security proofs of those whiteboard vids are basically void, because they did not take basic token-economics into account. Ethereum’s Casper does solve this via Slashing and Cardanos Ouroboros does nothing about that from what I saw.