[{"type":"report","id":"BLC-STUDY-1310","title":"Implement Difficulty Freeze","author":[{"literal":"James Hancock"}],"issued":{"date-parts":[[2020]]},"publisher":"James Hancock","URL":"https://github.com/ethereum/EIPs/blob/master/EIPS/eip-2515.md","note":"Rights status: Licensed for redistribution. Not a licence to republish the paper."}]