[loloquwowndueo]

This is well explained in chia’s documentation. A server issues “challenges” and the harvesters respond if they have the answer to that challenge. Think of it like bingo but with a gazillion squares.

The trick is that calculating the response to a challenge takes a very long time and the server only waits for a very short time to get any valid responses. So it follows that the harvesters must compute the responses in advance and store them on disk, which serves as proof that you had that disk space allocated to chia harvesting.

[yownie]

thanks for the explanation