CHIP-0013: Tighten Plot Filter Rules

CHIP-13 is now a Draft. It will disallow plots from passing the plot filter for more than one out of any four consecutive signage points.

This CHIP is somewhat related to CHIP-12 in that it will reduce the cost effectiveness of plot grinding. It requires a soft fork of Chia’s blockchain.

Feel free to discuss the CHIP here or on Keybase. You can also leave reviews for this CHIP in the PR.