Blockchain cryptocurrencies rely on the economic incentives of PoW (or something similar) in order to function correctly. Has anybody modelled how the miners might behave under varied circumstances? So far, the incentives seem to be working correctly, with no double-spend attacks happening.
There have been plenty of double-spend attacks that have happened. For example, ETC has a 6.5 day deposit time on Kraken.
[1] https://www.google.com/search?q=arxiv+mining+pow
[2] https://support.kraken.com/hc/en-us/articles/203325283-Crypt...